CN103151890A - Outer rotor permanent-magnet synchronous motor with staggered pole structure and low positioning force moment - Google Patents
Outer rotor permanent-magnet synchronous motor with staggered pole structure and low positioning force moment Download PDFInfo
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- CN103151890A CN103151890A CN2013100931259A CN201310093125A CN103151890A CN 103151890 A CN103151890 A CN 103151890A CN 2013100931259 A CN2013100931259 A CN 2013100931259A CN 201310093125 A CN201310093125 A CN 201310093125A CN 103151890 A CN103151890 A CN 103151890A
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- permanent magnet
- magnet motor
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- 230000001360 synchronised effect Effects 0.000 title abstract description 23
- 230000005291 magnetic effect Effects 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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Abstract
The invention provides an outer rotor permanent-magnet synchronous motor with staggered pole structure and low positioning force moment and relates to the technical field of permanent-magnet synchronous motors. The outer rotor permanent-magnet synchronous motor aims at solving the problem that the inherent positioning force moment of the existing permanent-magnet synchronous motor restricts the application range of the permanent-magnet synchronous motor in the low-speed performance and high-precision position control. The outer rotor permanent-magnet synchronous motor is characterized in that an outer rotor of a first outer rotor permanent-magnet synchronous motor and an outer rotor of a second outer rotor permanent-magnet synchronous motor are coaxially connected, and in addition, N and S magnetic poles are mutually staggered for 40 degrees to 50 degrees; and an inner stator of the first outer rotor permanent-magnet synchronous motor and an inner stator of the second outer rotor permanent-magnet synchronous motor are coaxially connected, and in addition, tooth grooves are staggered for 15 degrees to 25 degrees. The outer rotor permanent-magnet synchronous motor can effectively reduce the inherent positioning force moment of the permanent-magnet synchronous motor, the reduction amplitude is 25 percent to 30 percent of the inherent positioning force moment of the traditional motor, and the outer rotor permanent-magnet synchronous motor has the advantages that the structure is simple, and the cost is low.
Description
Technical field
What the present invention relates to is the technical field of permanent magnet synchronous motor.
Background technology
Location torque is the intrinsic phenomenon of permanent magnet synchronous motor, just exist and the location torque relevant with the position that be permanent magnet synchronous motor at the state of not energising; Location torque comprises magnetic hysteresis location torque and magnetic resistance location torque, is mainly that existence due to the stator teeth groove makes that the motor magnetic resistance is inhomogeneous to be caused.
Location torque directly produces fluctuation moment in Direct Driving System, affect larger, especially the hi-Fix of low-speed performance and position control system there is obvious impact, thereby restricted the range of application of permanent magnet synchronous motor in low-speed performance and high precision position control.
Summary of the invention
The purpose of this invention is to provide the low location torque outer rotor permanent magnet motor of a kind of wrong electrode structure, there is intrinsic location torque in order to solve existing permanent magnet synchronous motor, and restricted the range of application of permanent magnet synchronous motor in low-speed performance and high precision position control.
Described purpose realizes by following scheme: described a kind of wrong electrode structure hangs down the location torque outer rotor permanent magnet motor, is comprised of the first outer rotor permanent magnet motor, the second outer rotor permanent magnet motor;
The external rotor of the first outer rotor permanent magnet motor is connected and its N, mutual dislocation 40 degree～50 of S magnetic pole is spent with the external rotor of the second outer rotor permanent magnet motor 2 is coaxial; The internal stator of the first outer rotor permanent magnet motor is connected with the internal stator coaxial inner conductor of the second outer rotor permanent magnet motor and its teeth groove dislocation 15 degree～25 is spent.
The present invention can effectively reduce the intrinsic location torque of permanent magnet synchronous motor, and the reduction amplitude is the 25%-30% of conventional motors stationary positioned moment, and has advantages of simple in structure, with low cost.
Description of drawings
Fig. 1 is structural representation of the present invention; Fig. 2 be in Fig. 1 A-A to the sectional structure schematic diagram; Fig. 3 be in Fig. 1 B-B to the sectional structure schematic diagram.
Embodiment
Embodiment one: as Fig. 1, Fig. 2, shown in Figure 3, it is comprised of the first outer rotor permanent magnet motor 1, the second outer rotor permanent magnet motor 2;
The external rotor 1-1 of the first outer rotor permanent magnet motor 1 is connected and its N, mutual dislocation 40 degree～50 of S magnetic pole is spent with the external rotor 2-1 of the second outer rotor permanent magnet motor 2 is coaxial; The internal stator 1-2 of the first outer rotor permanent magnet motor 1 is connected with the internal stator 2-2 coaxial inner conductor of the second outer rotor permanent magnet motor 2 and its teeth groove dislocation 15 degree～25 is spent.
Embodiment two: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is N, S magnetic pole dislocation 42 degree each other of external rotor 2-1 of N, S magnetic pole and the second outer rotor permanent magnet motor 2 of the external rotor 1-1 of described the first outer rotor permanent magnet motor 1.Other composition and annexation are identical with embodiment one.
Embodiment three: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is N, S magnetic pole dislocation 45 degree each other of external rotor 2-1 of N, S magnetic pole and the second outer rotor permanent magnet motor 2 of the external rotor 1-1 of described the first outer rotor permanent magnet motor 1.Other composition and annexation are identical with embodiment one.
Embodiment four: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is N, S magnetic pole dislocation 48 degree each other of external rotor 2-1 of N, S magnetic pole and the second outer rotor permanent magnet motor 2 of the external rotor 1-1 of described the first outer rotor permanent magnet motor 1.Other composition and annexation are identical with embodiment one.
Embodiment five: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is teeth groove dislocation 18 degree of the internal stator 2-2 of the teeth groove of internal stator 1-2 of described the first outer rotor permanent magnet motor 1 and the second outer rotor permanent magnet motor 2.Other composition and annexation are identical with embodiment one.
Embodiment six: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is teeth groove dislocation 20 degree of the internal stator 2-2 of the teeth groove of internal stator 1-2 of described the first outer rotor permanent magnet motor 1 and the second outer rotor permanent magnet motor 2.Other composition and annexation are identical with embodiment one.
Embodiment seven: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is teeth groove dislocation 23 degree of the internal stator 2-2 of the teeth groove of internal stator 1-2 of described the first outer rotor permanent magnet motor 1 and the second outer rotor permanent magnet motor 2.Other composition and annexation are identical with embodiment one.
Operation principle: the location torque of permanent magnet synchronous motor is that motor just exists at the state of not energising, and the moment relevant with the position, from source analysis, comprises magnetic hysteresis location torque and magnetic resistance location torque.Location torque directly produces fluctuation moment in Direct Driving System, larger to the performance impact of motor.
The magnetic hysteresis location torque is that the hysteresis effect due to core material produces.When the rotor permanent magnet magnetic field rotating, main flux is alternation in stator core, due to the hysteresis of ferromagnetic material, phase shift variations occurred between air gap main flux and permanent-magnet magnetic kinetic potential, has produced loss, has therefore caused the generation of hysteresis torque.The size of magnetic hysteresis loss is namely magnetized the area of the magnetic hysteresis loop in a week, and corresponding torque is exactly the size of hysteresis torque thus.
The magnetic resistance location torque is cogging torque, is to be caused by the caused magnetic resistance inhomogeneous broadening effect of stator core fluting, and the reluctance torque that produces when the effect of rotor permanent magnet magnetomotive force and inhomogeneous magnetic resistance is exactly so-called magnetic resistance location torque.Clearly, the magnetic resistance location torque greatly the young pathbreaker change along with the position of stator teeth groove.
Adopt the magnetic pole misconstruction, only need that in installation process the stator of two motors and rotor are rotated respectively different angles and get final product, thus cost of manufacture without increase, the manufacturing process complexity still can effectively reduce the permanent magnet synchronous motor location torque without increase.
Claims (7)
1. wrong electrode structure hangs down the location torque outer rotor permanent magnet motor, and it is comprised of the first outer rotor permanent magnet motor (1), the second outer rotor permanent magnet motor (2);
The external rotor (1-1) that it is characterized in that the first outer rotor permanent magnet motor (1) is connected and its N, mutual dislocation 40 degree～50 of S magnetic pole is spent with the external rotor (2-1) of the second outer rotor permanent magnet motor (2) is coaxial; The internal stator (1-2) of the first outer rotor permanent magnet motor (1) is connected with internal stator (2-2) coaxial inner conductor of the second outer rotor permanent magnet motor (2) and its teeth groove dislocation 15 degree～25 is spent.
2. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, it is characterized in that the external rotor (1-1) of described the first outer rotor permanent magnet motor (1) N, S magnetic pole and the second outer rotor permanent magnet motor (2) external rotor (2-1) N, S magnetic pole each other dislocation 42 spend.
3. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, it is characterized in that the external rotor (1-1) of described the first outer rotor permanent magnet motor (1) N, S magnetic pole and the second outer rotor permanent magnet motor (2) external rotor (2-1) N, S magnetic pole each other dislocation 45 spend.
4. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, it is characterized in that the external rotor (1-1) of described the first outer rotor permanent magnet motor (1) N, S magnetic pole and the second outer rotor permanent magnet motor (2) external rotor (2-1) N, S magnetic pole each other dislocation 48 spend.
5. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, is characterized in that the teeth groove of the internal stator (1-2) of described the first outer rotor permanent magnet motor (1) is spent with the teeth groove dislocation 18 of the internal stator (2-2) of the second outer rotor permanent magnet motor (2).
6. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, is characterized in that the teeth groove of the internal stator (1-2) of described the first outer rotor permanent magnet motor (1) is spent with the teeth groove dislocation 20 of the internal stator (2-2) of the second outer rotor permanent magnet motor (2).
7. the low location torque outer rotor permanent magnet motor of wrong electrode structure according to claim 1, is characterized in that the teeth groove of the internal stator (1-2) of described the first outer rotor permanent magnet motor (1) is spent with the teeth groove dislocation 23 of the internal stator (2-2) of the second outer rotor permanent magnet motor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093125.9A CN103151890B (en) | 2013-03-22 | 2013-03-22 | The low location torque outer rotor permanent magnet motor of wrong electrode structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093125.9A CN103151890B (en) | 2013-03-22 | 2013-03-22 | The low location torque outer rotor permanent magnet motor of wrong electrode structure |
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| Publication Number | Publication Date |
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| CN103151890A true CN103151890A (en) | 2013-06-12 |
| CN103151890B CN103151890B (en) | 2015-09-09 |
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| CN201310093125.9A Active CN103151890B (en) | 2013-03-22 | 2013-03-22 | The low location torque outer rotor permanent magnet motor of wrong electrode structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412912A (en) * | 2001-10-11 | 2003-04-23 | 株式会社萌力克 | Permanent-magnet type rotary electric machine |
| EP1995855A2 (en) * | 2007-05-21 | 2008-11-26 | HONDA MOTOR CO., Ltd. | Electric motor, power apparatus using the same, and self-propelled snow remover |
| CN102148551A (en) * | 2011-03-10 | 2011-08-10 | 高林发 | Two-in-one coaxial direct current brushless motor |
-
2013
- 2013-03-22 CN CN201310093125.9A patent/CN103151890B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412912A (en) * | 2001-10-11 | 2003-04-23 | 株式会社萌力克 | Permanent-magnet type rotary electric machine |
| EP1995855A2 (en) * | 2007-05-21 | 2008-11-26 | HONDA MOTOR CO., Ltd. | Electric motor, power apparatus using the same, and self-propelled snow remover |
| CN102148551A (en) * | 2011-03-10 | 2011-08-10 | 高林发 | Two-in-one coaxial direct current brushless motor |
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| CN103151890B (en) | 2015-09-09 |
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Effective date of registration: 20230824 Address after: No. 777 Youfu Road, Hefu Town, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee after: Chi Mei motor (Zhejiang) Co.,Ltd. Address before: 150000 No. 92, West Da Zhi street, Nangang District, Harbin, Heilongjiang. Patentee before: HARBIN INSTITUTE OF TECHNOLOGY |
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Effective date of registration: 20231108 Address after: Building A, No. 777 Youfu Road, Hefu Town, Nanxun District, Huzhou City, Zhejiang Province, 313009 (self declared) Patentee after: Xinchao Technology (Zhejiang) Co.,Ltd. Address before: No. 777 Youfu Road, Hefu Town, Nanxun District, Huzhou City, Zhejiang Province, 313000 Patentee before: Chi Mei motor (Zhejiang) Co.,Ltd. |