CN201409065Y - Brushless excitation motor - Google Patents
Brushless excitation motor Download PDFInfo
- Publication number
- CN201409065Y CN201409065Y CN2009201076676U CN200920107667U CN201409065Y CN 201409065 Y CN201409065 Y CN 201409065Y CN 2009201076676 U CN2009201076676 U CN 2009201076676U CN 200920107667 U CN200920107667 U CN 200920107667U CN 201409065 Y CN201409065 Y CN 201409065Y
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- China
- Prior art keywords
- magnetic pole
- stator
- rotor
- exciting coil
- magnet exciting
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- Expired - Fee Related
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- 230000005284 excitation Effects 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 14
- 239000002131 composite material Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 210000000515 tooth Anatomy 0.000 claims description 3
- 235000012489 doughnuts Nutrition 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A brushless excitation motor comprises a rotor (1), a stator (9), an exciting coil (7), a motor shell (15) and the like. The rotor (1) consists of a front magnetic pole (2), a back magnetic pole (3) and a magnetic yoke (4) which are sheathed on a rotating shaft (5). A section of axial air gap (6) is kept between the front magnetic pole (2) and the back magnetic pole (3). An exciting coil rack (8)is fixed on the stator (9) through the axial air gap (6); and a tap (16) of the exciting coil (7) also passes out of the axial air gap (6) so as to introduce exciting currents. The stator (9) is a combined type stator and consists of a stator ring (10), a stator tooth (11) and a stator winding (12).
Description
Technical field
The utility model relates to a kind of brushless excitation motor, this motor can be used as brushless excitation synchronous generator, brushless excitation synchronous motor, brushless excitation DC motor, is especially suitable for use as the driver motor of generator, the generating on the hybrid vehicle and electronic all-in-one and electric automobile on the automobile.
Background technology
In present prior art, the exciting current of synchronous machine is all introduced by brush and slip ring; This shortcoming of brush synchronous machine is arranged is the failure rate height, and the life-span is short.Though permanent magnetic brushless need not brush and slip ring, its rotor must be made of permanent magnet; And permanent magnet demagnetizes when high temperature, vibration and overload easily, and along with this efficiency of motor of the prolongation of time can descend, this is the inherent defect of magneto.
The utility model content
The purpose of this utility model provides a kind of brushless excitation motor of efficient, high reliability.
Brushless excitation motor of the present utility model partly is made up of stator, rotor, field spool, magnet exciting coil and casing etc.Rotor is made up of the preceding magnetic pole, back magnetic pole and the yoke that are enclosed within the rotating shaft.In technical solution of the present utility model, preceding magnetic pole separates vertically with the back magnetic pole, promptly when rotor rotates, before magnetic pole and back magnetic pole formed rotating cylindrical body at motor shaft to non-intersect, a bit of axial space is arranged between them, and field spool is fixed on the stator by this axial space; Magnet exciting coil on field spool, the tap of magnet exciting coil also in the past the axial air gap between magnetic pole and the back magnetic pole pass to introduce exciting current.Field spool and magnet exciting coil are in the semi-surrounding structure of preceding magnetic pole, back magnetic pole and yoke composition, but all have the slit to exist between field spool and preceding magnetic pole, back magnetic pole and the yoke, and therefore, magnet exciting coil and field spool separate with rotor; Promptly magnet exciting coil and field spool keep inactive state with stator when rotor rotates.Stator is positioned at the outer ring of rotor, has air gap to exist between stator and the rotor.Second technical solution of the present utility model is to have adopted combined-stator, and this combined-stator is made up of track ring, stator tooth and stator winding; Track ring and stator tooth are made by permeability magnetic material, and track ring is the sulculus that the inner ring of annular or annulus has some along motor tangent plane radially; Stator tooth along motor shaft to tangent plane be the short toroidal of a length of side on one side, or by outwards adding the composite figure that a rectangle forms in the middle of the bell-mouthed long limit.Its minor face closely links to each other with the track ring inner ring, and the long limit then magnetic pole with rotor is relative to introduce magnetic flux.Between two adjacent stator tooths wire casing is arranged, stator winding just is in the wire casing.
Because brushless excitation motor of the present utility model need not brush and slip ring just can be introduced exciting current, thereby has avoided the shortcoming of brush motor, and the reliability of motor is improved greatly; Simultaneously, the combined-stator that brushless excitation motor of the present utility model adopts can improve efficiency of motor and can reduce cost again, so brushless excitation motor of the present utility model has the advantage of efficient and cheap again.
Description of drawings
Fig. 1 is the structural map of brushless excitation motor of the present utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the winding diagram of brushless excitation motor of the present utility model during as AC generator for vehicle.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection range of the present utility model with this.
As seen from Figure 1, brushless excitation motor of the present utility model is made up of rotor (1), stator (9), magnet exciting coil (7) and casing parts such as (15), and form by preceding magnetic pole (2) in the rotating shaft (5), back magnetic pole (3) and yoke (4) by being enclosed within for rotor (1).Preceding magnetic pole (2) and back magnetic pole (3) stagger mutually at circumferencial direction
P is the magnetic pole logarithm in the formula.As seen from Figure 1, between preceding magnetic pole (2) and the back magnetic pole (3) one section axial space (6) is arranged.Rotor (1) is bearing in the casing (15) by front and back bearings.
Magnet exciting coil (7) is on field spool (8), field spool (8) and magnet exciting coil (7) are in the semi-surrounding structure of preceding magnetic pole (2), back magnetic pole (3) and yoke (4) composition, but all there is the slit to exist between field spool (8) and preceding magnetic pole (2), back magnetic pole (3) and the yoke (4), therefore, magnet exciting coil (7) and field spool (8) separate with rotor (1); Promptly magnet exciting coil (7) and field spool (8) keep inactive state when rotor (1) rotates.Field spool (8) is fixed on the stator (9) by the axial air gap (6) between preceding magnetic pole (2) and the back magnetic pole (3); The tap (16) of magnet exciting coil (7) also passes to introduce exciting current from axial air gap (6).
Stator (9) is positioned at the outer ring of rotor (1), has air gap to exist between stator and the rotor.What brushless excitation motor of the present utility model adopted is combined-stator, and it is made up of track ring (10), stator tooth (11) and stator winding (12); Track ring (10) and stator tooth (11) are made by permeability magnetic material, and track ring (10) is the sulculus that the inner ring of concentric circles annular or donut has some along motor tangent plane radially; Stator tooth (11) along motor shaft to tangent plane be the short toroidal of a length of side on one side, or by outwards adding the composite figure that a rectangle (13) forms in the middle of the bell-mouthed long limit, its minor face closely links to each other with the track ring inner ring, and the long limit then magnetic pole with rotor is relative to introduce magnetic flux.Wire casing (14) is arranged between two adjacent stator tooths, and stator winding (12) just is in the wire casing (14).
When brushless excitation motor of the present utility model used as AC generator for vehicle, best embodiment is: the rotor magnetic pole logarithm was 6 pairs, and the N utmost point and the S utmost point are at the circumferencial direction 30 ° of angles of staggering.Each 36 of stator tooth and stator slots, stator winding adopts three phase windings, the 120 ° of electrical degrees that stagger mutually between winding (i.e. the width of two grooves), three phase windings adopt star or delta connection.Its concrete winding diagram is seen Fig. 3, and wherein 1 is motor body, and 2 is three-phase stator winding, and 3 is magnet exciting coil, and 4 is rectifier bridge, and 5 is voltage regulator, and 6 are load.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (2)
1, a kind of brushless excitation motor is made up of stator (9), rotor (1), field spool (8), magnet exciting coil (7) and casing parts such as (15); Rotor (1) is made up of the preceding magnetic pole (2), back magnetic pole (3) and the yoke (4) that are enclosed within the rotating shaft, it is characterized in that: preceding magnetic pole (2) separates vertically with back magnetic pole (3), promptly when rotor rotates, preceding magnetic pole (2) and the formed rotating cylindrical body of back magnetic pole (3) to non-intersect, have a bit of axial space (6) at motor shaft between them; Magnet exciting coil (7) is on field spool (8), field spool (8) and magnet exciting coil (7) are in the semi-surrounding structure of preceding magnetic pole (2), back magnetic pole (3) and yoke (4) composition, but all there is the slit to exist between field spool (8) and preceding magnetic pole (2), back magnetic pole (3) and the yoke (4), therefore, magnet exciting coil (7) and field spool (8) separate with rotor (1); Promptly magnet exciting coil (7) and field spool (8) keep inactive state when rotor (1) rotates; Field spool (8) is fixed on the stator (9) by the axial air gap (6) between preceding magnetic pole (2) and the back magnetic pole (3); The tap (16) of magnet exciting coil (7) also passes to introduce exciting current from axial air gap (6); Stator (9) is positioned at the outer ring of rotor (1), has air gap to exist between stator (9) and the rotor (1), and rotor (1) is bearing in the casing (15) by front and back bearings.
2, the described brushless excitation motor of claim 1, what it is characterized in that stator (9) employing is combined-stator, it is made up of track ring (10), stator tooth (11) and stator winding (12); Track ring (10) and stator tooth (11) are made by permeability magnetic material, and track ring (10) is the sulculus that the inner ring of concentric circles annular or donut has some along motor tangent plane radially; Stator tooth (11) along motor shaft to tangent plane be the short toroidal of a length of side on one side, or by outwards adding the composite figure that a rectangle (13) forms in the middle of the bell-mouthed long limit, its minor face closely links to each other with the track ring inner ring, and the long limit then magnetic pole with rotor is relative to introduce magnetic flux; Wire casing (14) is arranged between two adjacent stator tooths, and stator winding (12) just is in the wire casing (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201076676U CN201409065Y (en) | 2009-05-06 | 2009-05-06 | Brushless excitation motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201076676U CN201409065Y (en) | 2009-05-06 | 2009-05-06 | Brushless excitation motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201409065Y true CN201409065Y (en) | 2010-02-17 |
Family
ID=41680012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201076676U Expired - Fee Related CN201409065Y (en) | 2009-05-06 | 2009-05-06 | Brushless excitation motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201409065Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI416847B (en) * | 2010-08-13 | 2013-11-21 | Univ Nat Central | Hybrid permanent magnet synchronous power generating system |
-
2009
- 2009-05-06 CN CN2009201076676U patent/CN201409065Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI416847B (en) * | 2010-08-13 | 2013-11-21 | Univ Nat Central | Hybrid permanent magnet synchronous power generating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20140506 |