WO2024048870A1 - 자속 집중형 모터 - Google Patents
자속 집중형 모터 Download PDFInfo
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- WO2024048870A1 WO2024048870A1 PCT/KR2023/000308 KR2023000308W WO2024048870A1 WO 2024048870 A1 WO2024048870 A1 WO 2024048870A1 KR 2023000308 W KR2023000308 W KR 2023000308W WO 2024048870 A1 WO2024048870 A1 WO 2024048870A1
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- arc
- type permanent
- permanent magnet
- magnetic flux
- outer diameter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
- H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
Definitions
- This specification relates to a magnetic flux-concentrating motor, and more specifically, to a magnetic flux-concentrating motor equipped with an arc-type permanent magnet.
- a motor is a machine that obtains rotational power from electrical energy and includes a stator and a rotor.
- the rotor is configured to interact electromagnetically with the stator and rotates by the force acting between the magnetic field and the current flowing in the coil.
- SPM Surface Permanent Magnet
- IPM Interior Permanent Magnet
- the permanent magnet surface-mounted motor has a structure in which permanent magnets are attached to the core surface of the rotor, and has relatively low noise and vibration and good rotational power, but when rotating at high speeds, the permanent magnets come off and mechanical rigidity deteriorates. It has the disadvantage of not being easy to control for area diversification.
- the permanent magnet embedded motor has a structure in which a permanent magnet is inserted and fixed into an embedded hole formed by penetrating upward and downward through the core of the rotor, and in addition to the electromagnetic torque, the reluctance torque due to the salient pole structure ( It has the characteristic of increasing torque and output compared to permanent magnet surface-mounted motors due to the addition of reluctance torque.
- a flux-concentrate type motor has been developed that improves motor efficiency by further improving torque and output compared to a permanent magnet embedded type motor.
- a flux-concentrating motor is also called a spoke type motor.
- Magnetic flux-concentrated motors have a structurally high magnetic flux concentration, so they can generate high torque and high output. They also have the advantage of being able to miniaturize the rotor for the same output, so they can be used in washing machines or electric vehicles that require high-torque and high-output characteristics. and can be applied to drive motors such as air conditioners.
- the magnetic flux-concentrating rotor provided in a magnetic flux-concentrating motor uses a square bar-type permanent magnet (hereinafter referred to as “bar-type permanent magnet”) arranged radially around a shaft. ”) and a rotor core that supports square bar-type permanent magnets and forms a path for magnetic flux.
- bar-type permanent magnet square bar-type permanent magnet
- the rotor core may include yokes disposed between each bar-type permanent magnet, and a cylindrical base located between the shaft and the bar-type permanent magnets and connected to each of the yokes.
- the magnetic flux-concentrating motor is equipped with a Hall sensor to detect the position of the rotor, especially the position of the permanent magnet.
- the reference electric angle (Reference EAng, A) value of the phase difference between the waveform of the motor's back electromotive force and the Hall sensor voltage is required.
- the standard electrical angle is the standard value required for IC elements for motor control.
- the standard electrical angle is different for each company, such as 120 degrees, 150 degrees, and 180 degrees, but 150 degrees is generally used as the standard electrical angle.
- the Hall sensor voltage it is generated by recognizing the axial magnetic flux value of the bar-type permanent magnet, and the back electromotive force refers to the voltage induced in the stator coil as the rotor rotates.
- the Hall sensor In a flux-focused motor, the Hall sensor must be installed in an optimal position to check the flux of the permanent magnet.
- the position of the Hall sensor is shifted from the D-axis in [Table 1] below. Select the point moved by the mechanical angle (C/E).
- the reference electric angle (Reference EAng, “A”) is a value obtained by subtracting the Hall sensor voltage (Vh) from the back electromotive force (Bemf).
- Sensing Eang refers to the phase difference with the back electromotive force waveform when the Hall sensor is on the D axis, and the back electromotive force waveform depending on how to recognize “-” or “+” of the magnetic flux value. It is in phase with (0deg) or there is a difference of 180 degrees.
- shift mechanical angle (Shift Ang, (C/E)) is the value converted from the shift electrical angle (C) to a mechanical angle, which is the value obtained by dividing the shift electrical angle (C) by the number of pole pairs (E) of the flux-concentrating motor. am.
- the position moved by the shift mechanical angle (C/E) with the rotor aligned on the D axis is selected as the position of the Hall sensor.
- the position of the Hall sensor is selected at a point moved by the shift mechanical angle (C/E) from the D axis on the PCD (Pitch Circle Diameter) of the Hall sensor. .
- the D axis refers to the position where the rotor is aligned when DC current is applied to the A-phase coil, and is defined according to the number of poles/slots of the flux-concentrating motor.
- the D-axis and the bar-type permanent magnet are aligned.
- the fact that the D-axis and the bar-type permanent magnet are aligned means that the virtual line connecting the width direction center of the bar-type permanent magnet in the longitudinal direction of the bar-type permanent magnet coincides with the D-axis.
- Figure 1 shows the location where the Hall sensor 20 is installed in a 10-pole magnetic flux-concentrating motor equipped with a bar-type permanent magnet 10.
- the position of the Hall sensor is designed by limiting the electrical angle of 120 degrees, which is generally used in a three-phase magnetic flux concentration type motor, to the number of poles of the magnetic flux concentration type motor.
- the technical problem that this specification aims to solve is to adjust the magnetic flux concentration motor equipped with an arc-type permanent magnet to variables such as the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedding angle of the arc-type permanent magnet.
- the goal is to provide a magnetic flux-concentrating motor that allows installation of a Hall sensor at an accurate location.
- Another technical problem that the present invention aims to solve is to maximize the performance of the magnetic flux-concentrating motor with an arc-type permanent magnet by installing a Hall sensor at an accurate position.
- Another technical problem that this specification aims to solve is to provide a magnetic flux-concentrating motor with an arc-type permanent magnet that can effectively increase the back electromotive force compared to the amount of magnet usage in the same rotor size.
- Another technical problem that this specification aims to solve is to provide a magnetic flux-concentrating motor equipped with an arc-type permanent magnet that can maximize back electromotive force.
- Another technical problem that this specification aims to solve is to provide a magnetic flux-concentrating motor equipped with a magnetic flux-concentrating rotor that increases mechanical rigidity by effectively dispersing the force of magnet scattering while adopting an open slot structure.
- a magnetic flux-concentrating motor is an arc type including an inner diameter portion formed with a first curvature, an outer diameter portion formed with a second curvature, and a connection portion connecting the end of the inner diameter portion to the end of the outer diameter portion.
- a magnetic flux-concentrating rotor with a plurality of permanent magnets embedded in it; and a printed circuit board provided with a Hall sensor for detecting the position of the arc-type permanent magnet, wherein in a state where the magnetic flux-concentrating rotor is aligned on the D axis, the Hall sensor is positioned at the first axis from the D axis. It is located on the PCD (Pitch Circle Diameter) of the Hall sensor at a position shifted by the mechanical angle, and the first mechanical angle is made up of the sum of the second mechanical angle and the third mechanical angle.
- PCD Peak Circle Diameter
- the second mechanical angle has the same number of poles and PCD as the magnetic flux-concentrating rotor and has a magnetic flux-concentrating rotor in which a plurality of bar-type permanent magnets are embedded. This is the angle at which the sensor must move, and the third mechanical angle is the angle between the first virtual line connecting the width direction center of the arc-type permanent magnet in the longitudinal direction of the arc-type permanent magnet and the PCD of the Hall sensor. The intersection point is the angle formed with the D axis.
- the third mechanical angle can be determined based on the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedded angle of the arc-type permanent magnet.
- the position of the Hall sensor is determined by reflecting the third mechanical angle determined based on the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedded angle of the arc-type permanent magnet. can be installed in the correct location.
- the third mechanical angle can be calculated based on the following equation (1), where A' refers to the third mechanical angle and k refers to the vertical distance between the D axis and the intersection point.
- the third mechanical angle is calculated based on the equation (1), there are various types of devices with different numbers of poles, number of pole pairs, PCD of the Hall sensor, shape of the arc-type permanent magnet, and embedding angle of the arc-type permanent magnet.
- the position of the Hall sensor can be easily set in a magnetic flux-concentrating motor.
- the magnetic flux-concentrating rotor includes a shaft; rotor core; And it may include the plurality of arc-type permanent magnets.
- the rotor core includes an annular ring-shaped inner diameter core having a shaft through hole into which the shaft is inserted; A plurality of outer diameter cores are arranged along the circumferential direction of the inner diameter core on the outer peripheral surface of the inner diameter core and are spaced apart from each other to form permanent magnet insertion portions for accommodating the plurality of arc-type permanent magnets; And a plurality of bridges are arranged along the circumferential direction of the inner diameter core, corresponding to each of the outer diameter cores, and may include a bridge connecting each of the outer diameter cores to the inner diameter core.
- the outer cervical core may have a first incision located at the lower end.
- the magnetic flux is bent and flows due to the first incision, so the leakage path of the magnetic flux is relatively increased, thereby increasing magnetoresistance and reducing the amount of leakage magnetic flux through the bridge.
- the back electromotive force of the motor can be increased, the performance of the motor can be improved, and the output density of the motor can be increased.
- Each of the plurality of arc-type permanent magnets can satisfy at least one of the five equations below.
- A1 is the thickness of the arc-type permanent magnet
- B1 is the width of the arc-type permanent magnet
- C1 is the first curvature of the inner diameter part
- D1 is the second curvature of the outer diameter part
- E1 is the magnetization center point.
- the back electromotive force is high compared to the amount of magnet usage.
- Arc-type permanent magnets can be manufactured, and arc-type permanent magnets with maximized back electromotive force can be manufactured.
- the second curvature of the arc-type permanent magnet may be greater than the first curvature.
- the second curvature of the arc-type permanent magnet may be the same as the first curvature or may be smaller than the first curvature.
- the connecting portion of the arc-type permanent magnet may include a first straight portion connected to an end of the outer diameter portion, and a second straight portion connecting an end of the first straight portion and an end of the inner diameter portion.
- Ten arc-type permanent magnets may be embedded in the rotor core. That is, the magnetic flux-concentrating motor of this specification may be a 10-pole motor.
- the arc-type permanent magnet includes a first connection line connecting the center of the inner core to the center of a first straight portion formed at one end of the arc-type permanent magnet and another line of the arc-type permanent magnet from the center of the inner core. It can be inserted into the permanent magnet insertion part so that an included angle of 5 degrees to 20 degrees is maintained between the second connection lines connecting the centers of the first straight portion formed at the end of each side.
- the back electromotive force can be further increased by optimizing the arrangement angle or embedding angle of the arc-type permanent magnet.
- the outer diameter core has a first side in contact with the inner diameter of a first arc-type permanent magnet among two adjacent arc-type permanent magnets, and a second side located opposite to the first side among the two arc-type permanent magnets. It may have a second side that contacts the outer diameter of the 2-arc type permanent magnet, and the first cut may be formed extending from an end of the second side of the outer diameter core toward the first side.
- the bridge has a first side extending from an end of the first side of the outer diameter core and connected to the inner diameter core, and a second side located on the opposite side of the first side of the bridge and connected to the inner diameter core. It can be included.
- the second side of the bridge may be positioned spaced apart from an end of the outer diameter of the second arc-type permanent magnet toward the first side of the outer diameter core.
- a portion of the first side of the bridge may contact at least a portion of the connection portion of the first arc-type permanent magnet.
- the first cut portion may extend toward the first side of the outer diameter core from a point where the first straight portion of the first arc-type permanent magnet and the lower end of the second side of the outer diameter core are connected.
- the second side of the bridge may extend from an end of the first incision and be connected to the inner cervical core.
- a portion where the second side of the bridge and the end of the first cutout are connected may be located radially outward from the first straight portion of the first arc-type permanent magnet.
- the first incision and the second side of the bridge may form an acute angle.
- the first cut portion may be parallel to at least a portion of the connection portion of the first arc-type permanent magnet.
- the outer cervical core may further include a second incision extending radially outward from an end of the first incision.
- the magnetic flux is bent more and flows due to the second cutout, so the leakage path of the magnetic flux is relatively increased, resulting in a further increase in magnetic resistance, and the leakage magnetic flux through the bridge.
- the amount may decrease further.
- the second side of the bridge may extend from an end of the second incision and be connected to the inner cervical core.
- a portion where the second side of the bridge and the end of the second cutout are connected may be located radially outward from the first straight portion of the first arc-type permanent magnet.
- the second cutout and the second side of the bridge may form an acute angle.
- the first cut portion may be formed parallel to at least a portion of the connection portion of the arc-type permanent magnet.
- an arc-type permanent magnet using five variables (magnet thickness, magnet width, first curvature of the inner diameter, second curvature of the outer diameter, and magnetization center point gap), an arc-type permanent magnet with high back electromotive force compared to the amount of magnet usage was designed. It is possible to manufacture arc-type permanent magnets with maximized back electromotive force.
- the leakage path of the magnetic flux is relatively increased, thereby increasing magnetoresistance and reducing the amount of leakage magnetic flux through the bridge.
- the back electromotive force of the magnetic flux-concentrating motor can be increased, the performance of the magnetic flux-concentrating motor can be improved, and the output density of the magnetic flux-concentrating motor can be increased.
- the back electromotive force of the magnetic flux-concentrating motor can be further increased.
- Figure 1 is a diagram showing a state in which a Hall sensor is installed in a 10-pole magnetic flux-concentrating motor equipped with a bar-type permanent magnet.
- Figure 2 is a cross-sectional view showing an arc-type permanent magnet that maximizes magnet usage based on the optimized size of the arc-type permanent magnet used in a 10-pole motor.
- FIG. 3 is a diagram showing an arc-type permanent magnet in which the thickness and magnetization center point gap of the arc-type permanent magnet shown in FIG. 2 are changed.
- FIG. 4 is a diagram showing an arc-type permanent magnet in which the second curvature of the outer diameter portion and the gap between the magnetization center points of the arc-type permanent magnet shown in FIG. 2 are changed.
- FIG. 5 is a diagram showing an arc-type permanent magnet in which the first curvature of the inner diameter of the arc-type permanent magnet shown in FIG. 2 and the gap at the center of magnetization are changed.
- FIG. 6 is a diagram showing an arc-type permanent magnet in which the width, second curvature of the outer diameter portion, and gap at the magnetization center point of the arc-type permanent magnet shown in FIG. 2 are changed.
- FIG. 7 is a diagram showing an arc-type permanent magnet in which the thickness of the arc-type permanent magnet shown in FIG. 2 and the first curvature of the inner diameter are changed.
- Figure 8 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the first curvature of the inner diameter portion and the second curvature of the outer diameter portion of the arc-type permanent magnet.
- Figure 9 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the thickness and width of the arc-type permanent magnet.
- Figure 10 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the gap and width of the magnetization center point of an arc-type permanent magnet.
- Figure 11 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the first curvature and thickness of the inner diameter of an arc-type permanent magnet.
- Figure 12 is a graph showing the magnitude of back electromotive force according to the first curvature of the inner diameter portion, the second curvature of the outer diameter portion, and thickness of an arc-type permanent magnet.
- Figure 13 is a diagram showing the schematic configuration of a magnetic flux-concentrating rotor equipped with an arc-type permanent magnet and a magnetic flux-concentrating motor equipped with this rotor according to an embodiment of the present specification.
- FIG. 14 is a diagram showing the schematic configuration of the rotor core shown in FIG. 13.
- FIG. 15 is a diagram for explaining the leakage magnetic flux occurring in the magnetic flux-concentrating rotor shown in FIG. 13.
- Figure 16 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the second embodiment of the present specification.
- Figure 17 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the third embodiment of the present specification.
- Figure 18 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the fourth embodiment of the present specification.
- Figure 19 is a graph showing the improvement rate of back electromotive force according to the arrangement angle of the arc-type permanent magnet.
- Figure 20 is a diagram showing the location where the Hall sensor is installed in a 10-pole magnetic flux concentration type motor equipped with an arc-type permanent magnet.
- Figure 21 is a bottom view of a printed circuit board provided in a 10-pole magnetic flux-concentrating motor equipped with an arc-type permanent magnet.
- Figure 2 is a cross-sectional view showing an arc-type permanent magnet that maximizes magnet usage based on the optimized size of the arc-type permanent magnet used in a 10-pole motor.
- 3 to 7 are diagrams showing arc-type permanent magnets according to embodiments in which at least two of the five design elements are changed.
- the arc-type permanent magnet 230 is an arc having an inner diameter portion 231 formed with a first curvature (C1) and an outer diameter portion 233 formed with a second curvature (D1). It is a type permanent magnet.
- the second curvature D1 of the outer diameter portion 233 and the first curvature C1 of the inner diameter portion 231 are different from each other.
- the second curvature D1 of the outer diameter portion 233 may be greater than the first curvature C1 of the inner diameter portion 231, and the first curvature C1 of the inner diameter portion 231 may be greater than the first curvature C1 of the outer diameter portion 233. It may be greater than the second curvature D1 of .
- the arc-type permanent magnet 230 further includes a connecting portion 235 connecting the end of the inner diameter portion 231 and the end of the outer diameter portion 233, and the connecting portion 235 is connected to the end of the outer diameter portion 233. It includes a first straight portion 235a and a second straight portion 235b connecting the end of the first straight portion 235a and the end of the inner diameter portion 231.
- first straight portion 235a and the second straight portion 235b may be formed to have an interior angle A2 of 90 degrees.
- FIG. 2 shows an arc type in which the first curvature (C1) of the inner diameter portion 231 is R12.5, the second curvature (D1) of the outer diameter portion 233 is R8.0, and the magnetization center point gap (E1) is 10.0.
- a permanent magnet 230 is shown.
- the magnetization center point gap E1 refers to the distance between the center point of the first curvature C1 and the center point of the second curvature D1.
- the arc-type permanent magnet 230 shown in FIG. 2 has a thickness (A1) of 5.5 and a width (B1) of 15.1.
- FIG. 3 is a diagram showing an arc-type permanent magnet in which the thickness and magnetization center point gap of the arc-type permanent magnet shown in FIG. 2 are changed.
- the design factors other than the thickness (A1) and the magnetization center point gap (E1) are the remaining design factors, namely, the width (B1), the first curvature (C1) of the inner diameter portion, and the second curvature (D1) of the outer diameter portion. ) has the same value as the arc-type permanent magnet in Figure 2.
- the thickness (A1) of the arc-type permanent magnet shown in FIG. 3 is 4.5, and the magnetization center point gap (E1) is 9.
- FIG. 4 is a diagram showing an arc-type permanent magnet in which the second curvature of the outer diameter portion and the gap between the magnetization center points of the arc-type permanent magnet shown in FIG. 2 are changed.
- the remaining design factors except the second curvature (D1) of the outer diameter portion and the magnetization center point gap (E1), that is, the width (B1), the first curvature (C1) of the inner diameter portion, and the thickness (A1) ) has the same value as the arc-type permanent magnet in Figure 2.
- the second curvature (D1) of the outer diameter of the arc-type permanent magnet shown in FIG. 4 is R10.0, and the gap (E1) at the center of magnetization is 7.
- FIG. 5 is a diagram showing an arc-type permanent magnet in which the first curvature of the inner diameter of the arc-type permanent magnet shown in FIG. 2 and the gap at the center of magnetization are changed.
- the remaining design factors excluding the first curvature (C1) of the inner diameter portion and the magnetization center point gap (E1), that is, the thickness (A1) and width (B1) and the second curvature (D1) of the outer diameter portion, are ) has the same value as the arc-type permanent magnet in Figure 2.
- the first curvature (C1) of the inner diameter of the arc-type permanent magnet shown in FIG. 5 is R10.5, and the gap (E1) at the center of magnetization is 5.
- FIG. 6 is a diagram showing an arc-type permanent magnet in which the width, second curvature of the outer diameter portion, and gap at the magnetization center point of the arc-type permanent magnet shown in FIG. 2 are changed.
- the remaining design factors excluding the width (B1), the second curvature (D1) of the outer diameter portion, and the magnetization center point gap (E1), that is, the thickness (A1) and the first curvature (C1) of the inner diameter portion, are ) has the same value as the arc-type permanent magnet in Figure 2.
- the width (B1) of the arc-type permanent magnet shown in FIG. 6 is 13
- the second curvature (D1) of the outer diameter portion is R14.0
- the gap (E1) at the center of magnetization is 3.
- FIG. 7 is a diagram showing an arc-type permanent magnet in which the thickness of the arc-type permanent magnet shown in FIG. 2 and the first curvature of the inner diameter are changed.
- the remaining design factors except the thickness (A1) and the first curvature (C1) of the inner diameter portion, that is, the width (B1), the second curvature (D1) of the outer diameter portion, and the magnetization center point gap (E1) ) has the same value as the arc-type permanent magnet in Figure 2.
- the thickness (A1) of the arc-type permanent magnet shown in FIG. 7 is 4, the first curvature (C1) of the inner diameter portion is R13, and the magnetization center point gap (E1) is 7.
- the arc-type permanent magnet shown in FIG. 7 as the arc-type permanent magnet that has a large effect of increasing back electromotive force compared to the amount of magnet used.
- the width and thickness of the permanent magnet are used as design factors.
- the thickness of the permanent magnet is highly correlated with the demagnetization resistance of the motor, and the length of the permanent magnet contributes more to improving the back electromotive force of the motor.
- the arc-type permanent magnet of this specification when it has the same magnet volume as the bar type, it is possible to design the length of the arc-type permanent magnet (width of the arc-type permanent magnet) to be short, and the amount of the arc-type permanent magnet Since it is possible to design the end thickness to be thin, it is also advantageous compared to bar-type permanent magnets in terms of magnetization.
- the effect of increasing the back electromotive force of the motor according to the five design factors (thickness, width, first curvature of the inner diameter part, second curvature of the outer diameter part, and magnetization center point gap) defined in this specification is analyzed. It is possible to maximize the effect of the motor by specifying the ratio of each factor.
- Figure 8 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the first curvature of the inner diameter part and the second curvature of the outer diameter part of the arc-type permanent magnet
- Figure 9 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the first curvature of the inner diameter part and the second curvature of the outer diameter part of the arc-type permanent magnet.
- This is a graph showing the size of back electromotive force compared to the amount of magnet usage.
- Figure 10 is a graph showing the magnitude of back electromotive force compared to the amount of magnet usage according to the ratio of the gap and width of the magnetization center point of the arc-type permanent magnet
- Figure 11 is a graph showing the magnitude of the back electromotive force compared to the amount of magnet usage according to the ratio of the first curvature and thickness of the inner diameter of the arc-type permanent magnet. This is a graph showing the size of back electromotive force compared to usage.
- an arc-type permanent magnet can be designed to satisfy at least one of equations (2) to (5) below.
- the units of the thickness (A1), width (B1), and magnetization center point gap (E1) of the arc-type permanent magnet may be the same.
- the units of thickness (A1), width (B1), and magnetization center point gap (E1) of an arc-type permanent magnet may be mm or cm.
- the back electromotive force (back electromotive force/magnet usage) compared to the magnet usage of the arc-type permanent magnet is approximately 0.5 or more.
- an arc-type permanent magnet it is possible to design an arc-type permanent magnet to satisfy at least one of the above equations (2) to (6), depending on the required performance or conditions of the motor.
- FIG. 13 is a diagram showing the schematic configuration of a magnetic flux-concentrating rotor equipped with an arc-type permanent magnet and a 10-pole motor equipped with this rotor
- FIG. 14 is a diagram showing the schematic configuration of the rotor core shown in FIG. 13.
- FIG. 15 is a diagram for explaining the leakage magnetic flux occurring in the magnetic flux-concentrating rotor shown in FIG. 13.
- a motor equipped with a magnetic flux-concentrating rotor according to the first embodiment of the present specification includes a stator 100 and a magnetic flux-concentrating rotor 200.
- the stator 100 may include a stator core 110 and a plurality of teeth 120 protruding from the stator core 110 in the radial direction.
- the stator core 110 may be formed in a ring shape.
- a pole shoe 130 extending on both sides in the circumferential direction may be provided at the radial inner end of the tooth 120.
- a slot 140 is formed between the teeth. Accordingly, the coil 150 is wound through the teeth 120 and the slot 140.
- the magnetic flux-concentrating rotor 200 includes a shaft 210, a rotor core 220, and an arc-type permanent magnet 230.
- the arc-type permanent magnet 230 has an inner diameter portion 231 formed with a first curvature C1 and an outer diameter portion 233 formed with a second curvature D1.
- the second curvature D1 of the outer diameter portion 233 is formed in a different size from the first curvature C1 of the inner diameter portion 231, and the second curvature D1 of the outer diameter portion 233 is formed in a different size from the first curvature C1 of the inner diameter portion 231.
- ) may be formed larger than the first curvature C1, or, conversely, may be formed smaller.
- each arc-type permanent magnet 230 proceeds in the tangential direction (T), and the outer diameter portion 233 is formed as a strong magnetic flux surface, and the inner diameter portion 231 is formed as a weak magnetic flux surface.
- the arc-type permanent magnet 230 may further include a connection portion 235 connecting the end of the inner diameter portion 231 and the end of the outer diameter portion 233, and the connection portion 235 is connected to the end of the outer diameter portion 233. It may include a connected first straight portion 235a and a second straight portion 235b connecting the end of the first straight portion 235a and the end of the inner diameter portion 231.
- first straight portion 235a and the second straight portion 235b may be formed to have an interior angle A2 of 90 degrees.
- the rotor core 220 includes an inner core 221, an outer core 223, and a bridge 225.
- the inner diameter core 221 is formed in an annular ring shape with a shaft through hole 221a into which the shaft 210 is inserted.
- the outer core 223 is arranged in plural pieces along the circumferential direction (or tangential direction) of the inner diameter core 221 on the outer peripheral surface of the inner diameter core 221, and is a permanent magnet for accommodating the arc-type permanent magnet 230. They are arranged to be spaced apart from each other to form insertion portions 223a.
- a first fixing protrusion 223b and a second fixing protrusion 223c protruding in an arc direction may be formed on both edges of the outer end of the outer diameter core 223.
- the first and second fixing protrusions (223b) (223c) fix the position of the arc-type permanent magnet 230 when the arc-type permanent magnet 230 is inserted into the permanent magnet insertion portion 223a, and It serves to prevent the arc-type permanent magnet 230 from scattering when the magnet 200 rotates.
- the outer diameter core 223 has an open slot structure.
- a plurality of bridges 225 are arranged along the circumferential direction of the inner core 221, corresponding to each of the outer cores 223, and connect each of the outer cores 223 to the inner core 221.
- the outer core 223 may be referred to as an outer core, and the inner core 221 may be referred to as an inner core. This is because the inner diameter core 221 is located radially inside the outer diameter core 223. Also, the outer diameter core 223 may be referred to as a yoke.
- arc-type permanent magnets 230 having an inner diameter portion 231 with a weak magnetic flux surface and an outer diameter portion 233 with a strong magnetic flux surface are arranged so that their sides face different from those adjacent to each other. do. Therefore, magnetic flux can be compensated and torque ripple can be reduced.
- a gap H1 defined by the bridge 225 is formed.
- the outer diameter core 223 has a first side (223d) in contact with the inner diameter portion 231 of the first arc-type permanent magnet 230A among the two adjacent arc-type permanent magnets, and two arc-type permanent magnets. It has a second side 223e in contact with the outer diameter 233 of the second arc-type permanent magnet 230B, and further includes a first cutout 223f located at the lower end.
- the first cut portion 223f is formed by extending from an end of the second side 223e of the outer diameter core 223 toward the first side 223d.
- the bridge 225 extends from the end of the first side 223d of the outer diameter core 223 and has a first side 225a connected to the inner diameter core 221, and on the opposite side of the first side 225a. It is located and includes a second side 225b connected to the inner core 221.
- the second side 225b of the bridge 225 is located away from the end of the outer diameter portion 233 of the second arc-type permanent magnet 230B toward the first side 223d of the outer diameter core 223.
- the lower end of the second arc-type permanent magnet 230B may be the first straight portion 235a.
- the separation distance D2 of the second side 225b of the bridge 225 may be set to various values.
- a portion of the first side 225a of the bridge 225 is in contact with at least a portion of the connection portion 235 of the first arc-type permanent magnet 230A, for example, the second straight portion 235b. can do.
- the first cut portion 223f is formed from the point P1 where the first straight portion 235a of the arc-type permanent magnet 230 and the lower end of the second side 223e of the outer diameter core 223 are connected. It may extend toward the first side (223d) of (223).
- the first cut portion 223f is formed by the first straight portion 235a of the arc-type permanent magnet 230 and the second side 223e of the outer diameter core 223. ) extends from the point P1 where the lower end of the outer diameter core 223 is connected to the first side 223d of the outer diameter core 223, and at least a portion of the connection portion 235 of the arc-type permanent magnet 230, for example, the first It may extend parallel to the straight portion 235a.
- the second side 225b of the bridge 225 extends from the end of the first cut 223f and is connected to the inner cervical core 221.
- the separation distance D2 of the second side 225b of the bridge 225 may be shorter than the length L3 of the first cutout 223f.
- portion P2 where the second side 225b of the bridge 225 and the end of the first cutout 223f are connected is radially larger than the first straight portion 235a of the arc-type permanent magnet 230. It can be located on the outside.
- the maximum width W1 of the bridge 225 is smaller than the width W2 of the lower end of the outer core 223.
- first cutout 223f and the second side 225b of the bridge 225 form a right angle or an acute angle A3.
- the first cut 223f and the second side 225b of the bridge 225 form an acute angle.
- the second side 225b of the bridge 225 is connected to the second permanent magnet ( It is located away from the outer diameter portion 233 of 230B) toward the first side 223d of the outer diameter core 223.
- the leakage path is relatively increased, so the magnetic resistance increases, and the magnetic flux is bent and flows due to the first cutout (223f), so the bridge (225) ) The amount of leakage magnetic flux decreases.
- Figure 16 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the second embodiment of the present specification.
- the first cut portion 223f is formed by bending toward the inner diameter core 221 compared to the first embodiment described above.
- the first cut portion 223f extends from the first straight portion 235a of the arc-type permanent magnet 230, and the connection portion 235 of the arc-type permanent magnet 230 At least a portion, for example, is configured to extend parallel to the first straight portion 235a.
- the first cut portion 223f may be formed by bending toward the inner core 221 compared to the first embodiment described above.
- the angle A3 between the first cutout 223f and the second side 225b of the bridge 225 forms approximately a right angle.
- Figure 17 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the third embodiment of the present specification.
- the outer diameter core provided in the magnetic flux-concentrating rotor of this embodiment includes at least a portion of the connection portion 235 of the arc-type permanent magnet 230, for example, a first cut portion extending parallel to the first straight portion 235a. It further includes a second cut portion 223g extending radially outward from the end of the bridge 223f, and the second side 225b of the bridge 225 extends from the end of the second cut portion 223g to form an inner diameter portion. Connected to core 221.
- the portion (P3) where the end of the arc-type permanent magnet 230 is connected is located radially outward from the first straight portion 235a of the arc-type permanent magnet 230.
- the magnetic flux concentration type rotor of this embodiment has a relatively increased leakage path compared to the first and second embodiments of the present specification, and thus the back electromotive force can be greatly improved.
- Figure 18 is a diagram showing the schematic configuration of a rotor core provided in a magnetic flux-concentrating rotor according to the fourth embodiment of the present specification.
- the rotor core provided in the magnetic flux-concentrating rotor of this embodiment forms a hole 223h in the outer core 223 of the rotor core of the first embodiment described above, thereby generating local saturation at the lower end of the outer diameter core 223. Shiki's configuration is starting.
- the gap D3 between the first side 223d of the outer diameter core 223 and the hole 223h is maintained at about 0.5 mm. It is desirable.
- hole 223h can also be applied to the outer diameter core provided in other embodiments described above.
- the shape design of the arc-type permanent magnet is important, but how the arc-type permanent magnet is placed in the rotor core is also an important design factor.
- Figure 19 is a graph showing the improvement rate of back electromotive force according to the arrangement angle or embedment angle of the arc-type permanent magnet.
- the arc-type permanent magnet 230 maintains an angle A4 of 5 to 20 degrees between the first connection line (L4) and the second connection line (L5). It can be seen that the improvement rate of back electromotive force is excellent when inserted into the permanent magnet insertion part as much as possible.
- the first connection line (L4) refers to a line connecting the center of the inner diameter core 221 to the center of the first straight portion (235a) formed at one end of the arc-type permanent magnet 230
- the second connection line (L5) refers to a line connecting the center of the inner diameter core 221 to the center of the first straight portion 235a formed at the other end of the arc-type permanent magnet 230.
- Figure 20 is a diagram showing the location where the Hall sensor is installed in a 10-pole magnetic flux-concentrating motor equipped with an arc-type permanent magnet
- Figure 21 is a printed diagram provided in a 10-pole magnetic flux-concentrating motor with an arc-type permanent magnet. This is a bottom view of the circuit board.
- the position of the Hall sensor is as much as the shift mechanical angle (C'/E), that is, the first mechanical angle (C'/E), in [Table 3] below from the D axis. Select the moved point.
- the reference electric angle (Reference EAng, “A”) is a value obtained by subtracting the Hall sensor voltage (Vh) from the back electromotive force (Bemf).
- the third mechanical angle (A') is a value determined based on the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedded angle of the arc-type permanent magnet, and is the width direction center of the arc-type permanent magnet.
- the intersection point (1) where the first virtual line (IL1) connecting the arc-type permanent magnet in the longitudinal direction and the PCD (PCD) of the Hall sensor intersect is the angle (A') formed with the D-axis. .
- the first virtual line IL1 may be referred to as a magnetic center line.
- the third mechanical angle (A') can be calculated using equation (1) below.
- A' is the third mechanical angle
- k is the vertical distance between the D axis and the intersection point.
- Figure 20 shows the position (1) of the Hall sensor on the magnetic center line (IL1) when the PCD (PCD) of the Hall sensor is 42 mm, 44 mm, and 46 mm, respectively, and when the PCD (PCD) of the Hall sensor is 46 mm.
- the final position (2) of the Hall sensor is shown.
- shift mechanical angle (Shift Ang, (C'/E)) is a value converted from the shift electrical angle (C') to a mechanical angle, and the shift electrical angle (C') is calculated as the number of pole pairs (E) of the flux-concentrated motor. It is a value divided by .
- the position (2) moved by the shift mechanical angle (C'/E) with the rotor aligned on the D axis is selected as the final position of the Hall sensor.
- the position (2) moved from the D axis by the shift mechanical angle (C'/E) on the PCD (Pitch Circle Diameter) of the Hall sensor is Select the final location.
- the D axis refers to the position where the rotor is aligned when DC current is applied to the A-phase coil, and is defined according to the number of poles/slots of the flux-concentrating motor.
- the D-axis and the arc-type permanent magnet are not aligned.
- the fact that the D-axis and the arc-type permanent magnet are not aligned means that the magnetic center line (IL1) of the arc-type permanent magnet does not coincide with the D-axis.
- the magnetic flux-concentrating motor when comparing [Table 1] and [Table 3], in the case of a magnetic flux-concentrating motor equipped with arc-type permanent magnets, the magnetic flux-concentrating motor has the same number of poles and PCD and a plurality of bar-type permanent magnets are embedded.
- the Hall sensor In a magnetic flux-concentrating motor with a type rotor, the Hall sensor is located at the point where the third mechanical angle (A') is added to the second mechanical angle (B), which is the angle at which the Hall sensor must move to satisfy the reference electrical angle (A). It can be seen that it is desirable to install (20).
- the third mechanical angle (A') is calculated based on the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedded angle of the arc-type permanent magnet, so it is necessary to determine the exact installation location of the Hall sensor.
- the method can be applied regardless of the PCD of the Hall sensor, the shape of the arc-type permanent magnet, and the embedded angle of the arc-type permanent magnet.
- FIG. 21 shows a state in which the Hall sensor 20 is installed on the bottom of the printed circuit board 300.
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Abstract
Description
| Parts | Case1 | Case2 | Case3 | |
| A | Refere4nce EAng.(Bemf-Vh) | 120 | 150 | 180 |
| B | Sensing EAng.(@D-Axis) | 180 | 180 | 180 |
| C | Shift EAng.(B-A) | 60 | 30 | 0 |
| D | Poles | 10 | 10 | 10 |
| E | Poles Pare | 5 | 5 | 5 |
| C/E | Shift Ang. | 12 | 6 | 0 |
| Hall Sensor position(@Final position) | Ang.(D-Axis)+(C/E) | |||
| 도 2 | 도 3 | 도 4 | 도 5 | 도 6 | 도 7 | |
| 자석 사용량 | 128% | 100% | 109% | 114% | 102% | 96% |
| 역기전력 | 55.8 | 50.9 | 56.1 | 57.1 | 51.7 | 52.8 |
| 역기전력/자석 사용량 | 0.436 | 0.502 | 0.503 | 0.494 | 0.500 | 0.543 |
| Parts | Case1 | Case2 | Case3 | |
| A | Reference EAng.(Bemf-Vh) | 120 | 150 | 180 |
| A' | Ang | 3.05 | 3.05 | 3.05 |
| B' | Sensing EAng.(@D-Axis)(B'=B+A'E) | 195.3 | 195.3 | 195.3 |
| C' | Shift EAng.(B'-A) | 75.3 | 45.3 | 15.3 |
| D | Poles | 10 | 10 | 10 |
| E | Poles Pare | 5 | 5 | 5 |
| C'/E | Shift Ang. | 15.05 | 9.05 | 3.05 |
| Hall Sensor position(@Final position) | Ang.(D-Axis)+(C/E) | |||
Claims (23)
- 제1 곡률로 형성되는 내경부와 제2 곡률로 형성되는 외경부 및 상기 내경부의 단부를 상기 외경부의 단부에 연결하는 연결부를 포함하는 아크 타입 영구자석이 복수 개 매립된 자속 집중형 로터; 및상기 아크 타입 영구자석의 위치를 파악하기 위한 홀 센서(hall sensor)를 구비한 인쇄회로기판을 포함하며,상기 자속 집중형 로터가 D축 정렬된 상태에서, 상기 홀 센서는 D축으로부터 제1 기계각만큼 시프트된 위치에서 상기 홀 센서의 피시디(PCD: Pitch Circle Diameter) 상에 위치하며,상기 제1 기계각은 제2 기계각과 제3 기계각의 합으로 이루어지며,상기 제2 기계각은, 상기 자속 집중형 로터와 서로 동일한 극수 및 피시디를 가지며 복수 개의 바 타입 영구자석이 매립된 자속 집중형 로터를 구비한 자속 집중형 모터에서 기준 전기각을 만족하기 위하여 홀 센서가 이동해야 할 각도이고,상기 제3 기계각은, 아크 타입 영구자석의 폭방향 중심을 상기 아크 타입 영구자석의 길이 방향으로 연결하는 제1 가상선과 상기 홀 센서의 피시디(PCD)가 서로 교차하는 교차점이 상기 D축과 이루는 각도인 자속 집중형 모터.
- 제1항에서,상기 제3 기계각은 상기 홀 센서의 피시디, 상기 아크 타입 영구자석의 형상 및 상기 아크 타입 영구자석의 매립 각도에 근거하여 결정되는 자속 집중형 모터.
- 제2항에서,상기 제3 기계각은 하기의 식 (1)에 근거하여 산출되는 자속 집중형 모터.(1) A'=sin-1{k/(PCD/2)}상기 식 (1)에서, A'은 제3 기계각, k는 D축과 상기 교차점 간의 수직 거리임.
- 제1항 내지 제3항 중 어느 한 항에서,상기 자속 집중형 로터는,샤프트;로터 코어; 및상기 복수 개의 아크 타입 영구자석을 포함하고,상기 로터 코어는,상기 샤프트가 삽입되는 샤프트 관통홀을 구비한 환형의 링 형상의 내경부 코어와,상기 내경부 코어의 외주면에서 상기 내경부 코어의 원주방향을 따라 복수 개가 배열되며, 상기 복수 개의 아크 타입 영구자석을 수용하기 위한 영구자석 삽입부들을 형성하도록 서로 이격하여 배치되는 외경부 코어와,상기 외경부 코어 각각에 대응하여 상기 내경부 코어의 원주방향을 따라 복수 개가 배열되며, 상기 외경부 코어 각각을 상기 내경부 코어에 연결하는 브릿지를 포함하며,상기 외경부 코어는 하단부에 위치하는 제1 절개부를 구비하는 자속 집중형 모터.
- 제4항에서,상기 복수 개의 아크 타입 영구자석은 각각 하기의 5개의 식 중에서 적어도 어느 하나를 만족하는 자속 집중형 모터.(2) A1=k1*C1 (k1은 0.31 내지 0.37)(3) B1=k2*A1 (k2는 2.9 내지 3.75)(4) B1=k3*E1 (k3는 1.8 내지 2.7)(5) D1=k4*C1 (k4는 0.62 내지 0.98)(6) M1=(C1/D1)*A1/(C1-D1) (M1은 2.5 이상)상기 식 (2) 내지 (6)에서,A1은 아크 타입 영구자석의 두께, B1은 아크 타입 영구자석의 폭, C1은 내경부의 제1 곡률, D1은 외경부의 제2 곡률, E1은 자화 중심점임.
- 제5항에서,상기 아크 타입 영구자석의 상기 제2 곡률은 상기 제1 곡률보다 크게 형성되는 자속 집중형 모터.
- 제6항에서,상기 아크 타입 영구자석의 상기 연결부는, 상기 외경부의 단부에 연결되는 제1 직선부와, 상기 제1 직선부의 단부와 상기 내경부의 단부를 연결하는 제2 직선부를 포함하는 자속 집중형 모터.
- 제7항에서,상기 로터 코어에는 10개의 상기 아크 타입 영구자석이 매립되는 자속 집중형 모터.
- 제8항에서,상기 아크 타입 영구자석은 상기 내경부 코어의 중심으로부터 상기 아크 타입 영구자석의 한쪽 단부에 형성된 제1 직선부의 중심을 연결한 제1 연결선과 상기 내경부 코어의 중심으로부터 상기 아크 타입 영구자석의 다른 쪽 단부에 형성된 제1 직선부의 중심을 연결한 제2 연결선 사이에 5도 내지 20도의 사이각이 유지되도록 상기 영구자석 삽입부에 삽입되는 자속 집중형 모터.
- 제4항에서,상기 외경부 코어는 서로 이웃한 2개의 아크 타입 영구자석 중 제1 아크 타입 영구자석의 내경부와 접촉하는 제1 측면과, 상기 2개의 아크 타입 영구자석 중 상기 제1 측면의 반대쪽에 위치하는 제2 아크 타입 영구자석의 외경부와 접촉하는 제2 측면을 구비하며,상기 제1 절개부는 상기 외경부 코어의 제2 측면의 단부로부터 상기 제1 측면 쪽으로 연장되어 형성되는 자속 집중형 모터.
- 제10항에서,상기 브릿지는 상기 외경부 코어의 제1 측면의 단부로부터 연장되어 상기 내경부 코어에 연결되는 제1 측면과, 상기 브릿지의 제1 측면의 반대쪽에 위치하며 상기 내경부 코어에 연결되는 제2 측면을 포함하는 자속 집중형 모터.
- 제11항에서,상기 브릿지의 제2 측면은 상기 제2 아크 타입 영구자석의 외경부의 단부로부터 상기 외경부 코어의 제1 측면 쪽으로 이격하여 위치하는 자속 집중형 모터.
- 제12항에서,상기 브릿지의 제1 측면 중 일부는 상기 제1 아크 타입 영구자석의 연결부의 적어도 일부와 접촉하는 자속 집중형 모터.
- 제13항에서,상기 제1 절개부는 상기 제1 아크 타입 영구자석의 제1 직선부와 상기 외경부 코어의 제2 측면의 하단부가 연결되는 지점으로부터 상기 외경부 코어의 제1 측면 쪽으로 연장되는 자속 집중형 모터.
- 제14항에서,상기 브릿지의 제2 측면은 상기 제1 절개부의 단부로부터 연장되어 상기 내경부 코어에 연결되는 자속 집중형 모터.
- 제15항에서,상기 브릿지의 제2 측면과 상기 제1 절개부의 단부가 연결되는 부분은 상기 제1 아크 타입 영구자석의 제1 직선부보다 방사방향으로 외측에 위치하는 자속 집중형 모터.
- 제15항에서,상기 제1 절개부와 상기 브릿지의 제2 측면은 예각을 형성하는 자속 집중형 모터.
- 제15항에서,상기 제1 절개부는 상기 제1 아크 타입 영구자석의 연결부의 적어도 일부와 평행한 자속 집중형 모터.
- 제14항에서,상기 외경부 코어는 상기 제1 절개부의 단부로부터 방사방향 외측으로 연장되는 제2 절개부를 더 포함하는 자속 집중형 모터.
- 제19항에서,상기 브릿지의 제2 측면은 상기 제2 절개부의 단부로부터 연장되어 상기 내경부 코어에 연결되는 자속 집중형 모터.
- 제20항에서,상기 브릿지의 제2 측면과 상기 제2 절개부의 단부가 연결되는 부분은 상기 제1 아크 타입 영구자석의 제1 직선부보다 방사방향으로 외측에 위치하는 자속 집중형 모터.
- 제20항에서,상기 제2 절개부와 상기 브릿지의 제2 측면은 예각을 형성하는 자속 집중형 모터.
- 제20항에서,상기 제1 절개부는 상기 아크 타입 영구자석의 연결부의 적어도 일부와 평행하게 형성되는 자속 집중형 모터.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23860561.2A EP4503392A4 (en) | 2022-08-30 | 2023-01-06 | CONCENTRATED FLUX ENGINE |
| CN202380022914.5A CN118743134A (zh) | 2022-08-30 | 2023-01-06 | 磁通集中式马达 |
| US18/726,194 US20250149940A1 (en) | 2022-08-30 | 2023-01-06 | Flux-concentrated motor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0109044 | 2022-08-30 | ||
| KR1020220109044A KR102670967B1 (ko) | 2022-08-30 | 2022-08-30 | 자속 집중형 모터 |
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| Publication Number | Publication Date |
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| WO2024048870A1 true WO2024048870A1 (ko) | 2024-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2023/000308 Ceased WO2024048870A1 (ko) | 2022-08-30 | 2023-01-06 | 자속 집중형 모터 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250149940A1 (ko) |
| EP (1) | EP4503392A4 (ko) |
| KR (1) | KR102670967B1 (ko) |
| CN (1) | CN118743134A (ko) |
| WO (1) | WO2024048870A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024119404A1 (de) | 2024-07-09 | 2026-01-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Rotor für eine elektrische Maschine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025204819A1 (ja) * | 2024-03-27 | 2025-10-02 | パナソニックIpマネジメント株式会社 | ロータおよびモータ |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100068848A (ko) * | 2008-12-15 | 2010-06-24 | 김규학 | 무변출력 무정류자 직류전동기 |
| KR20140022913A (ko) * | 2011-05-15 | 2014-02-25 | 카펠, 안드레아스 | 로터리 드라이브 |
| US20170187256A1 (en) | 2015-12-23 | 2017-06-29 | Brose Fahrzeugteile Gmbh & Co Kommanditgesellschaft, Wuerzburg | Electric machine, method of manufacturing the electric machine, rotor and adjustment device |
| CN209283062U (zh) | 2018-12-17 | 2019-08-20 | 宁波麦思动力系统有限公司 | 一种具有霍尔传感器组件的电动机 |
| CN210258681U (zh) * | 2019-01-23 | 2020-04-07 | 平湖炜业电器有限公司 | 一种童车上的转向齿轮箱助力结构 |
| US20200161939A1 (en) * | 2017-07-21 | 2020-05-21 | Denso Corporation | Rotating electrical machine |
| JP2021184700A (ja) * | 2017-08-01 | 2021-12-02 | 株式会社デンソー | 磁石の製造方法、及び磁石配向装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6083523B2 (ja) | 2013-05-21 | 2017-02-22 | 日本電産株式会社 | ロータおよびモータ |
| WO2018128398A1 (ko) * | 2017-01-04 | 2018-07-12 | 엘지이노텍 주식회사 | 모터 및 변속기 |
| CN107394927B (zh) | 2017-08-30 | 2023-06-30 | 广东威灵电机制造有限公司 | 转子铁芯和转子 |
| KR20210109272A (ko) * | 2020-02-27 | 2021-09-06 | 엘지이노텍 주식회사 | 로터 및 이를 포함하는 모터 |
| KR102399710B1 (ko) * | 2020-04-28 | 2022-05-19 | 엘지전자 주식회사 | Ipm 모터 |
-
2022
- 2022-08-30 KR KR1020220109044A patent/KR102670967B1/ko active Active
-
2023
- 2023-01-06 WO PCT/KR2023/000308 patent/WO2024048870A1/ko not_active Ceased
- 2023-01-06 EP EP23860561.2A patent/EP4503392A4/en active Pending
- 2023-01-06 CN CN202380022914.5A patent/CN118743134A/zh active Pending
- 2023-01-06 US US18/726,194 patent/US20250149940A1/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100068848A (ko) * | 2008-12-15 | 2010-06-24 | 김규학 | 무변출력 무정류자 직류전동기 |
| KR20140022913A (ko) * | 2011-05-15 | 2014-02-25 | 카펠, 안드레아스 | 로터리 드라이브 |
| US20170187256A1 (en) | 2015-12-23 | 2017-06-29 | Brose Fahrzeugteile Gmbh & Co Kommanditgesellschaft, Wuerzburg | Electric machine, method of manufacturing the electric machine, rotor and adjustment device |
| US20200161939A1 (en) * | 2017-07-21 | 2020-05-21 | Denso Corporation | Rotating electrical machine |
| JP2021184700A (ja) * | 2017-08-01 | 2021-12-02 | 株式会社デンソー | 磁石の製造方法、及び磁石配向装置 |
| CN209283062U (zh) | 2018-12-17 | 2019-08-20 | 宁波麦思动力系统有限公司 | 一种具有霍尔传感器组件的电动机 |
| CN210258681U (zh) * | 2019-01-23 | 2020-04-07 | 平湖炜业电器有限公司 | 一种童车上的转向齿轮箱助力结构 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4503392A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024119404A1 (de) | 2024-07-09 | 2026-01-15 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Rotor für eine elektrische Maschine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118743134A (zh) | 2024-10-01 |
| EP4503392A1 (en) | 2025-02-05 |
| KR102670967B1 (ko) | 2024-05-31 |
| KR20240030262A (ko) | 2024-03-07 |
| US20250149940A1 (en) | 2025-05-08 |
| EP4503392A4 (en) | 2025-08-27 |
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