CN203301267U - Motor - Google Patents
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- Publication number
- CN203301267U CN203301267U CN2013202487164U CN201320248716U CN203301267U CN 203301267 U CN203301267 U CN 203301267U CN 2013202487164 U CN2013202487164 U CN 2013202487164U CN 201320248716 U CN201320248716 U CN 201320248716U CN 203301267 U CN203301267 U CN 203301267U
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- magnet steel
- motor
- rotor
- trapezoidal
- iron core
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Abstract
The utility model relates to the technical field of motors, and aims to provide a motor. The motor comprises a motor rotor. The motor rotor comprises a rotor iron core, trapezoidal magnet steels and trapezoidal magnet steel slots. At least two same axial through trapezoidal magnet steel slots are arranged on the rotor iron core. Adjacent trapezoidal magnet steel slots form a V shape which is symmetrically distributed relative to the radial direction of the rotor iron core. The opening of the V shape faces the excircle of the rotor iron core. Corresponding trapezoidal magnet steels are alternatively embedded in the trapezoidal magnet steel slots according to N pole and S pole. According to the utility model, the magnet steel slots and the magnet steels of the motor rotor are trapezoidal; the reluctance of a direction axis (axis d) magnet path uniformly varies in the circumferential direction; on the basis that some advantages of the V-shaped magnet steel is kept, the air gap flux density waveform is improved; harmonics are reduced; the reluctance torque component of the motor is increased; and the torque fluctuation of the motor is reduced.
Description
Technical field
The utility model is about the machine field technology, particularly a kind of motor.
Background technology
The analysis showed that both at home and abroad, magneto has torque density, characteristics that power density is larger, and this makes permanent magnet brushless electromotor more and more become the optimal selection of electric drive system for electric vehicles.Use at present the magnet steel of embedded rotor structural electromotor to adopt rectangle more, easy to process, but can cause simultaneously air gap flux density between rotor outer surface and stator near flat-topped wave, the harmonic wave that comprises is more, can cause adverse effect to back-emf, cogging torque and torque pulsation etc.Traditional solution is to adopt on rectangular basis at magnetic steel of motor, adopts the magnet steel such as V-arrangement or del to arrange, or the outer surface of rotor is made the curved surfaces of non-uniform gap.Yet it is not obvious to adopt the V-arrangement magnet steel to improve the flat-topped wave waveform, adopts simultaneously the del magnet steel to make the magnet steel consumption increase, and leakage field increases, and has increased assembly difficulty.
The utility model content
Main purpose of the present utility model is to overcome deficiency of the prior art, and a kind of motor that uses trapezoid magnet steel tank embedded rotor structure is provided.For solving the problems of the technologies described above, solution of the present utility model is:
A kind of motor is provided, comprise rotor, rotor comprises rotor core, trapezoidal magnet steel and trapezoid magnet steel tank, rotor core is provided with the trapezoid magnet steel tank of at least two identical axial perforations, adjacent trapezoid magnet steel tank is the V-arrangement that relative rotor core radial symmetric distributes, and the opening of V-arrangement is towards the rotor core cylindrical, and corresponding trapezoidal magnet steel alternately is inlaid in each trapezoid magnet steel tank by the N utmost point, the S utmost point.
As further improvement, described rotor core is the iron core that the rotor punching closed assembly forms.
, as further improvement, be evenly distributed with even number trapezoid magnet steel tank in described rotor core.
Compared with prior art, the beneficial effects of the utility model are:
The magnet steel groove of rotor and magnet steel are trapezoidal, in circumferencial direction d-axis (d axle) magnetic circuit reluctance even variation, on the basis of some advantages that kept the V-arrangement magnet steel, improved the air gap flux density waveform, reduce harmonic wave, increased the reluctance torque component of motor, reduced the motor torque fluctuation.
Description of drawings
Fig. 1 is the motor rotor construction schematic diagram that available technology adopting rectangle magnet steel V-arrangement magnet steel is arranged.
Fig. 2 is the motor rotor construction schematic diagram that available technology adopting rectangle magnet steel del magnet steel is arranged.
Fig. 3 is rotor perspective view of the present utility model.
Reference numeral in figure is: 1 rotor core; 2 trapezoid magnet steel tanks; 3 trapezoidal magnet steel.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
The rotor of motor as shown in Figure 3, rotor comprises rotor core 1, trapezoidal magnet steel 3 and trapezoid magnet steel tank 2, rotor core 1 is the iron core that the rotor punching closed assembly forms.Be evenly distributed with the trapezoid magnet steel tank 2 of the identical axial perforation of even number in rotor core 1, adjacent trapezoid magnet steel tank 2 is the V-arrangement that relative rotor core 1 radial symmetric distributes, the angle of V-arrangement greater than 0 ° less than 180 °, and the opening of V-arrangement is towards rotor core 1 cylindrical, and corresponding trapezoidal magnet steel 3 alternately is inlaid in each trapezoid magnet steel tank 2 by the N utmost point, the S utmost point.
Because trapezoid magnet steel tank 2 and the trapezoidal magnet steel 3 of rotor is trapezoidal, so-called trapezoidal, refer to axially looking from rotor, being shaped as of magnet steel is trapezoidal, in circumferencial direction d-axis (d axle) magnetic circuit reluctance even variation, on the basis of some advantages that kept the V-arrangement magnet steel, improved the air gap flux density waveform, reduce harmonic wave, increased the reluctance torque component of motor, reduced the motor torque fluctuation.
Claims (3)
1. motor, comprise rotor, it is characterized in that, rotor comprises rotor core, trapezoidal magnet steel and trapezoid magnet steel tank, rotor core is provided with the trapezoid magnet steel tank of at least two identical axial perforations, adjacent trapezoid magnet steel tank is the V-arrangement that relative rotor core radial symmetric distributes, and the opening of V-arrangement is towards the rotor core cylindrical, and corresponding trapezoidal magnet steel alternately is inlaid in each trapezoid magnet steel tank by the N utmost point, the S utmost point.
2. motor according to claim 1, is characterized in that, described rotor core is the iron core that the rotor punching closed assembly forms.
3. motor according to claim 1, is characterized in that, is evenly distributed with even number trapezoid magnet steel tank in described rotor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202487164U CN203301267U (en) | 2013-05-08 | 2013-05-08 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202487164U CN203301267U (en) | 2013-05-08 | 2013-05-08 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301267U true CN203301267U (en) | 2013-11-20 |
Family
ID=49577250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202487164U Expired - Fee Related CN203301267U (en) | 2013-05-08 | 2013-05-08 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301267U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269136A (en) * | 2013-03-25 | 2013-08-28 | 杭州德沃仕电动科技有限公司 | Motor |
| CN106953488A (en) * | 2017-05-22 | 2017-07-14 | 江苏雅迪科技发展有限公司宁波分公司 | A kind of embedded wheel hub motor and use its electric motor car |
| CN111052546A (en) * | 2017-06-19 | 2020-04-21 | 日产自动车株式会社 | Rotor of rotating electric machine |
-
2013
- 2013-05-08 CN CN2013202487164U patent/CN203301267U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269136A (en) * | 2013-03-25 | 2013-08-28 | 杭州德沃仕电动科技有限公司 | Motor |
| CN106953488A (en) * | 2017-05-22 | 2017-07-14 | 江苏雅迪科技发展有限公司宁波分公司 | A kind of embedded wheel hub motor and use its electric motor car |
| CN111052546A (en) * | 2017-06-19 | 2020-04-21 | 日产自动车株式会社 | Rotor of rotating electric machine |
| CN111052546B (en) * | 2017-06-19 | 2022-06-24 | 日产自动车株式会社 | Rotor of rotating electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 |