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WO2015040592A2 - Moteur électrique et générateur électrique - Google Patents

Moteur électrique et générateur électrique Download PDF

Info

Publication number
WO2015040592A2
WO2015040592A2 PCT/IB2014/064716 IB2014064716W WO2015040592A2 WO 2015040592 A2 WO2015040592 A2 WO 2015040592A2 IB 2014064716 W IB2014064716 W IB 2014064716W WO 2015040592 A2 WO2015040592 A2 WO 2015040592A2
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
generator
electric motor
motor
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2014/064716
Other languages
English (en)
Other versions
WO2015040592A3 (fr
Inventor
Kabu Walter MAKGERU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AP2016009163A priority Critical patent/AP2016009163A0/en
Publication of WO2015040592A2 publication Critical patent/WO2015040592A2/fr
Publication of WO2015040592A3 publication Critical patent/WO2015040592A3/fr
Anticipated expiration legal-status Critical
Priority to ZA2016/02570A priority patent/ZA201602570B/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/005—Machines with only rotors, e.g. counter-rotating rotors
    • 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
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • 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
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • 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
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets

Definitions

  • United States patent no US 20030193236 A1 in the name of Boris Maslov and Alexander Pyntikov discloses a rotary electric motor in which rotor and stator members are each configured as annular rings, concentric with respect to each other, about an axis of rotation.
  • Either of the rotor or stator members is formed of groups of electromagnet poles, the groups substantially equidistantly distributed along the angular extent of the annular ring, each of the groups comprising magnetic material magnetically isolated and separated from the other groups.
  • the other member comprises a plurality of permanent magnet poles substantially equidistantly distributed with alternating magnetic polarity along the angular extent of the radial air gap formed between the members, the permanent magnet poles having a common magnetic return path.
  • United States patent no US 7569970 B2 in the name of Hyundai Motor Co., Ltd. Discloses an electric motor comprising an inner periphery side rotor provided with inner peripheral permanent magnets with unlike poles, which are disposed alternately along a circumferential direction of the inner periphery side rotor, an outer periphery side rotor provided with outer peripheral permanent magnets with unlike poles, which are disposed alternately along a circumferential direction of the outer periphery side rotor, and a rotating device that varies a relative phase between the inner periphery side rotor and the outer periphery side rotor by rotating at least the inner periphery side rotor or the outer periphery side rotor around the rotational axis.
  • the outer peripheral side rotor is arranged such that a rotational axis thereof is coaxial with a rotational axis of the inner periphery side rotor.
  • the rotating device sets a variable width of the relative phase between the inner periphery side rotor and the outer periphery side rotor within a range of an electrical angle of below 180 °.
  • United States patent no US 2004015554 A1 in the name of Morgante John C. discloses a dual concentric AC motor allows for two independently operating AC motors that produce the same torque at the same current input as two conventional, separate electric motors while occupying a smaller physical volume.
  • the dual concentric AC motor utilizes a single, hollow cylindrical stator core comprising inner and outer stators and an inner rotor and an outer rotor that operate independently of one another.
  • the inner stator with windings that face toward the center of the motor, couples to the inner rotor, which rotates inside the single stator core, while the outer stator, with windings that face away from the center of the motor, couples to the outer rotor, which rotates around the single stator core.
  • the two rotors are coupled to separate, independent output shafts.
  • an electric motor of outer-rotor type includes: an inner stator mounted on a stator holder, an outer rotor rotatably circumferentially disposed around the inner stator, a shaft coaxially secured with the outer rotor, and a housing combined with the stator holder for encasing the outer rotor and the inner stator within the housing; with the inner stator including an annular core made of magnetic conductor, a plurality of fin arrays made of magnetic conductors and formed as a fin array assembly concentrically wrapped on the annular core, and a plurality of insulating coil bobbins each coil bobbin pre-wound with the coil windings thereon and jacketed on each fin array, thereby forming an inner stator having a stable construction, a higher winding capacity, higher magnetic flux density and higher output power, as well as a lower production cost.
  • United States patent no US 3308318 the name of Raymond M. Dunaiski discloses a motor having contra-rotating armatures arranged for electrodynamics cooperation with a stationary field structure mounted in the frame of the motor.
  • a rotary electric motor which comprises an annular first rotor, an annular stator disposed concentric with and radially outside the first rotor, and an annular second rotor disposed concentric with and radially outside the stator, the stator including a stator core made up of a plurality of stator pieces that are arranged in a circular array and electrically independently from each other, coils wound around the respective stator pieces, annular first and second brackets disposed on opposite axial ends of the stator core, a fastening device passing through holes of the first and second brackets and fixedly holding the stator core between the first and second brackets, and an induction current suppressing device suppressing an induction current that is produced in response to a variation of magnetic flux of each of the coils and flows through the fastening device.
  • United States patent no US 7569970 B2 in the name of HONDA MOTOR CO., LTD. discloses an electric motor comprising an inner periphery side rotor provided with inner peripheral permanent magnets with unlike poles, which are disposed alternately along a circumferential direction of the inner periphery side rotor, an outer periphery side rotor provided with outer peripheral permanent magnets with unlike poles, which are disposed alternately along a circumferential direction of the outer periphery side rotor, and a rotating device that varies a relative phase between the inner periphery side rotor and the outer periphery side rotor by rotating at least the inner periphery side rotor or the outer periphery side rotor around the rotational axis.
  • the outer peripheral side rotor is arranged such that a rotational axis thereof is coaxial with a rotational axis of the inner periphery side rotor.
  • the rotating device sets a variable width of the relative phase between the inner periphery side rotor and the outer periphery side rotor within a range of an electrical angle of below 180 °.
  • Chinese paten no CN 102347650 A in the name of FOSHAN NANHAI DISTR DONGTANG MOTOR FACTORY discloses an external rotor electric motor outer rotor assembly device it comprises outer shell outer rotor rotor shell the central hole and rotor shaft rotor shaft is concentrically and the size of the level section of rolling shaft the axle body head section is smooth round shaft than the outer rotor shell the center hole of head section the axle body big and small than the outer rotor shell in the centre hole of the shaft assembly the small head section can be the axle body there is no interference to pass through the outer rotor shell body the center hole of strong pressed into the rear big head section is smooth shaft body the outer rotor center of shell body hole is the interference fit with small head section of shaft body and it will not generate shape change is composed of a group of good concentricity high up-to-standard rate of the production cost is low the bonding force and firm the outer rotor of electric motor outer rotor assembly device is suitable for the alternating current direct current external rot
  • the invention discloses an external rotor assembly apparatus of an external rotor motor.
  • the external rotor assembly apparatus comprises: an external rotor shell, a center hole of the external rotor shell and a rotor shaft.
  • the rotor shaft is a stack class shaft comprising a large and a small size of concentric shafts.
  • a large part shaft is a smooth circular shaft and is larger than the center hole of the external rotor shell.
  • a small part shaft is smaller than the center hole of the external rotor shell.
  • the small part shaft can pass through the center hole of the external rotor shell without any interference. After being extruded with a strong force into the shaft, the large part smooth shaft can form tight interference fit with the center hole of the external rotor shell.
  • the small part shaft can not generate deformation.
  • a group of the external rotor assembly apparatus of the external rotor motor with good concentricity, a high passing rate, low costs and a firm bonding force is formed.
  • the external rotor assembly apparatus is suitable for being used in various kinds of alternating-current and direct-current external rotor motors.
  • United States patent no US 6844648 B2 in the name of RELIANCE ELECTRIC TECHNOLOGIES, LLC discloses a winding pattern and technique for a stator of an electric motor is provided.
  • the pattern is particularly well-suited for forming a four- pole, three-phase machine.
  • the winding pattern permits concentric windings to be fully installed in slots of a stator core by machine in multiple steps.
  • the concentric windings include windings which are singularly located within slots, and windings that share slots with other windings.
  • the windings maybe inserted in the core slots by rotation of the core in an insertion station. Leads from the windings exit both ends of the core to facilitate channeling and termination of the windings.
  • the electric motor the stator comprises stator iron core and is embedded in the stator iron core of the inner ring a plurality of stator winding wherein: Every stator winding is set with two winding; The same in the stator winding of the two winding coil and size of pitch is different and at the same core embedded.
  • This utility model claims the motor stator can ensure motor performance at the same time of reducing motor cost.
  • the utility model relates to a motor stator with double concentric windings, which belongs to the technical field of motors, and aims at reducing cost.
  • the motor stator comprises a stator core and a plurality of stator windings embedded in an inner ring of the stator core.
  • the motor stator is characterized in that each stator winding is provided with two winding coils; and the two winding coils in the same stator winding are different from each other in size and pitch, and are embedded in a concentric way.
  • the motor stator provided by the utility model can reduce the cost of a motor while guaranteeing the performance of the motor.
  • a stator for an electric motor includes first and second rows of conductors arranged concentrically around an axis inside a steel core. Each conductor includes a linking end.
  • the stator also includes a first dielectric shim ring arranged between the two rows of conductors. Each conductor of the first row is bent in either a clockwise or a counter-clockwise direction relative to the axis and each conductor of the second row is bent in the opposite direction.
  • the linking end of each conductor of the first row is attached to the linking end of an adjacent conductor of the second row after the conductors are bent.
  • the first shim ring separates the first and second rows of conductors when the conductors are being bent, and is also at least partially disposed between the first and second rows of conductors when the linking ends are being attached.
  • In is an object of this invention is to provide an electric motor and an electric generator of the type described above.
  • an electric motor or generator having at least two concentric rotors.
  • Each rotor is rotatable about its axis in an operative clockwise or anti-clockwise direction.
  • each rotor is independently driven, alternatively for the rotors to be dependency driven with drive means.
  • An inner rotor may have a winding or may have permanent magnets.
  • An outer rotor may have permanent magnets or may have a winding.
  • an electric motor or generator having at least two concentric rotors and having at least a round tubular magnet, split in a plane extending through an axis thereof, in one of the rotors or in a stator of the motor or the generator.
  • tubular magnets there is provided for two such tubular magnets to be located end to end. There is further provided for a winding to extend out of the motor or generator and for the part of the coil extending out of the motor or generator to be exposed to a separate changing magnetic flux.
  • Figure 1 shows a schematic view of a fist embodiment of an electric motor
  • Figure 2 shows a perspective view of a second embodiment of an electric motor
  • Figure 3 shows a perspective view of a third embodiment of an electric motor
  • Figure 4 shows a perspective view of a fourth embodiment of an electric motor
  • Figure 5 shows a perspective view of magnets for the motor
  • Figure 6 shows an end view of yet another embodiment of the motor
  • Figure 7 shows a perspective view of the embodiment of figure 6.
  • FIG. 1 a urinal anti-splash mat is generally indicated by reference numeral 1 .
  • Figures 1 to 4 show schematic views of 4 different embodiments of an electric motor. Those skilled in the art would appreciate that what is shown in the drawings and described below could easily apply to an electric generator.
  • Figure 1 shows a schematic cross sectional view of a stator and a rotor as is known in the art. However in this embodiment, the stator also rotates. The use of the word "stator" is thus incorrect. Instead, in this specification reference will be made to a second rotor. This will apply to all the drawings referred to herein.
  • the embodiment shown in figure 1 thus has two rotors.
  • the two rotors are mounted and supported by bearings allowing them to rotate about their own axis in both directions.
  • the rotors can thus rotate in the same direction or in opposite directions to each other.
  • The may be interconnected at their ends with a set of gears to regulate this relative movement. Alternatively they could be driven independently.
  • the inner rotor of figure 1 includes a winding of an electrically insulated but electrically conducting wire as is commonly known in the art.
  • the outer rotor includes permanent magnets as is also known in the art.
  • the winding and the magnets are swopped around so that the inner rotor includes the permanent magnets and the outer rotor has the magnets.
  • Figure 3 show an embodiment of an electric motor in which there are 3 rotors.
  • the rotors are concentric and can rotate independently or dependently using gearing or other means.
  • the rotors can be independently driven,
  • the rotors can rotate in any one of the two directions about their respective axis.
  • Figure 4 shows an alternative embodiment to the embodiment shown in figure 3.
  • the inner and outermost rotors include a winding and the central rotor includes permanent magnets.
  • the central rotor includes a winding and the inner and outermost rotor includes permanent magnets.
  • the rotors are independently driven by way of outer motors and pulleys and belts to which they are connected. Gears may also be used in this regard.
  • a permanent magnet 10 in the form of a round tube is split along a plane through its axis so that the magnet has two halves 1 1 and 12.
  • the split line 15 is clearly indicated in the drawing and could have non-conductive insulation material therein to keep the two halves slightly apart.
  • Halves 13 and 14 of another such magnet is located end to end with magnet 10.
  • Figure 6 shows the case where four such sets of magnets are located in a motor.
  • Two halves 16 and 17 of a magnet are concentric with two halves 1 1 and 12.
  • another similar magnet is located behind the halves 16 and 17.
  • the magnet having halves 13 and 14 are located behind the halves 1 1 and 12 of a magnet.
  • the winding 18 is located in between the four sets of magnets.
  • the winding 18 extends out of the motor or generator as can be seen in figure 7 and the part of the winding extending out of the motor or generator is exposed to a separate changing magnetic flux (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un moteur ou un générateur électrique possédant au moins deux rotors concentriques. Chaque rotor peut tourner autour de son axe dans le sens opératoire des aiguilles d'une montre ou dans le sens contraire des aiguilles d'une montre.
PCT/IB2014/064716 2013-09-20 2014-09-21 Moteur électrique et générateur électrique Ceased WO2015040592A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AP2016009163A AP2016009163A0 (en) 2014-05-28 2014-09-21 Electric generator
ZA2016/02570A ZA201602570B (en) 2013-09-20 2016-04-15 Electric generator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA201307090 2013-09-20
ZA2013/07090 2013-09-20
ZA2014/03888 2014-05-28
ZA201403888 2014-05-28

Publications (2)

Publication Number Publication Date
WO2015040592A2 true WO2015040592A2 (fr) 2015-03-26
WO2015040592A3 WO2015040592A3 (fr) 2016-01-28

Family

ID=52101356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/064716 Ceased WO2015040592A2 (fr) 2013-09-20 2014-09-21 Moteur électrique et générateur électrique

Country Status (2)

Country Link
WO (1) WO2015040592A2 (fr)
ZA (1) ZA201602570B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018029552A1 (fr) * 2016-08-12 2018-02-15 The Trustees For The Time Being Of The Kmn Fulfilment Trust Générateur électrique à arbre magnétique central

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308318A (en) 1961-12-27 1967-03-07 Gen Electric Dynamoelectric machine having concentric rotors with an intermediate stator
US6081059A (en) 1999-04-21 2000-06-27 Hsu; Chun-Pu Outer-rotor electric motor having inner-stator formed by concentrically wrapping flattened stator elements on stator core
US20030193236A1 (en) 2001-11-13 2003-10-16 Maloney Michael V. Vehicle wheel cover retention system and method for producing same
US20040015554A1 (en) 2002-07-16 2004-01-22 Brian Wilson Active e-mail filter with challenge-response
US6844648B2 (en) 2001-09-28 2005-01-18 Reliance Electric Technologies, Llc Electric motor stator and motor incorporating same
US7569970B2 (en) 2006-03-06 2009-08-04 Honda Motor Co., Ltd. Electric motor with multiple rotors in a concentrically circular arrangement around a rotation axis of the electric motor
CN102347650A (zh) 2010-08-03 2012-02-08 佛山市南海区东唐电机厂 外转子电动机外转子总成装置
US20120293034A1 (en) 2011-05-17 2012-11-22 Gm Global Technology Operations Llc. Stator for an electric motor
CN202737612U (zh) 2012-07-04 2013-02-13 百特节能电机有限公司 双同心绕组式电机定子

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69912504T2 (de) * 1998-03-25 2004-05-06 Nissan Motor Co., Ltd., Yokohama Motor/Generator
JP3716809B2 (ja) * 2002-04-01 2005-11-16 日産自動車株式会社 回転電機
DE60332906D1 (de) * 2002-10-26 2010-07-22 Lg Electronics Inc Elektrischer Motor
US7030528B2 (en) * 2003-02-06 2006-04-18 General Motors Corporation Dual concentric AC motor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308318A (en) 1961-12-27 1967-03-07 Gen Electric Dynamoelectric machine having concentric rotors with an intermediate stator
US6081059A (en) 1999-04-21 2000-06-27 Hsu; Chun-Pu Outer-rotor electric motor having inner-stator formed by concentrically wrapping flattened stator elements on stator core
US6844648B2 (en) 2001-09-28 2005-01-18 Reliance Electric Technologies, Llc Electric motor stator and motor incorporating same
US20030193236A1 (en) 2001-11-13 2003-10-16 Maloney Michael V. Vehicle wheel cover retention system and method for producing same
US20040015554A1 (en) 2002-07-16 2004-01-22 Brian Wilson Active e-mail filter with challenge-response
US7569970B2 (en) 2006-03-06 2009-08-04 Honda Motor Co., Ltd. Electric motor with multiple rotors in a concentrically circular arrangement around a rotation axis of the electric motor
CN102347650A (zh) 2010-08-03 2012-02-08 佛山市南海区东唐电机厂 外转子电动机外转子总成装置
US20120293034A1 (en) 2011-05-17 2012-11-22 Gm Global Technology Operations Llc. Stator for an electric motor
CN202737612U (zh) 2012-07-04 2013-02-13 百特节能电机有限公司 双同心绕组式电机定子

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018029552A1 (fr) * 2016-08-12 2018-02-15 The Trustees For The Time Being Of The Kmn Fulfilment Trust Générateur électrique à arbre magnétique central

Also Published As

Publication number Publication date
ZA201602570B (en) 2017-07-26
WO2015040592A3 (fr) 2016-01-28

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