CN103199664A - Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor - Google Patents
Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor Download PDFInfo
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- CN103199664A CN103199664A CN2013100931206A CN201310093120A CN103199664A CN 103199664 A CN103199664 A CN 103199664A CN 2013100931206 A CN2013100931206 A CN 2013100931206A CN 201310093120 A CN201310093120 A CN 201310093120A CN 103199664 A CN103199664 A CN 103199664A
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Abstract
The invention discloses a staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor, and relates to the technical field of permanent-magnet synchronous motors. The staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor is used for solving the problem that due to the fact that inherent location torque exists in an existing permanent-magnet synchronous motor, and application ranges of the existing permanent-magnet synchronous motor in low-speed performance and high-accuracy position control are restricted. According to the staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor, 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 connected in a coaxial in-phase mode, 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 connected in a coaxial mode, the center line of a first groove and the center line of a second groove of the staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor are staggered in phase in space above circumference, and a staggered angle is 6 degrees to 14 degrees. The staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor is capable of effectively reducing inherent location torque, wherein a reduction range of the inherent location torque is 25%-30% of the inherent location torque of a traditional permanent-magnet synchronous motor, and the staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor has the advantages of being simple in structure and low in cost.
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, is that permanent magnet synchronous motor is at just exist and the location torque relevant with the position of state of not switching on; Location torque comprises magnetic hysteresis location torque and magnetic resistance location torque, mainly is that the motor magnetic resistance is inhomogeneous to be caused because the existence of stator teeth groove makes.
Location torque directly produces fluctuation moment in Direct Driving System, influence bigger, especially the hi-Fix to low-speed performance and position control system has tangible influence, thereby has 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 dislocation notching construction, 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 dislocation notching construction hangs down the location torque outer rotor permanent magnet motor, is made up of first outer rotor permanent magnet motor, second outer rotor permanent magnet motor;
The external rotor that it is characterized in that first outer rotor permanent magnet motor is connected with the coaxial same-phase of the external rotor of second outer rotor permanent magnet motor; Wherein have first groove between two adjacent windings on the internal stator of first outer rotor permanent magnet motor; Wherein have second groove between two adjacent windings on the internal stator of second outer rotor permanent magnet motor; The width of the notch of first groove and second groove all is 1/3 or 2/5 of two slot for winding spacings, and the height of notch is 1/2 or 3/5 of internal stator armature height; The internal stator of first outer rotor permanent magnet motor is connected with the internal stator coaxial line of second outer rotor permanent magnet motor, and makes center line space phase shift on circumference of center line and second groove of first groove on it, and the dislocation angle is 6 degree～14 degree.
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 advantage simple in structure, with low cost.
Description of drawings
Fig. 1 is structural representation of the present invention; Fig. 2 be among Fig. 1 A-A to the sectional structure schematic diagram; Fig. 3 be among Fig. 1 B-B to the sectional structure schematic diagram.
Embodiment
Embodiment one: as Fig. 1, Fig. 2, shown in Figure 3, it is made up of first outer rotor permanent magnet motor 1, second outer rotor permanent magnet motor 2;
The external rotor 1-1 that it is characterized in that first outer rotor permanent magnet motor 1 is connected with the coaxial same-phase of external rotor 2-1 of second outer rotor permanent magnet motor 2; Wherein have the first groove 1-3 between two adjacent windings on the internal stator 1-2 of first outer rotor permanent magnet motor 1; Wherein have the second groove 2-3 between two adjacent windings on the internal stator 2-2 of second outer rotor permanent magnet motor 2; The width of the notch of the first groove 1-3 and the second groove 2-3 all is 1/3 or 2/5 of two slot for winding spacings, and the height of notch is 1/2 or 3/5 of internal stator armature height; The internal stator 1-2 of first outer rotor permanent magnet motor 1 is connected with the internal stator 2-2 coaxial line of second outer rotor permanent magnet motor 2, and to make center line space phase shift on circumference of center line and the second groove 2-3 of the first groove 1-3 on it, dislocation angle be 6 degree～14 degree.
Embodiment two: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is that the width of the notch of the described first groove 1-3 and the second groove 2-3 all is 1/3 of two slot for winding spacings.Other composition is identical with embodiment one with annexation.
Embodiment three: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is that the width of the notch of the described first groove 1-3 and the second groove 2-3 all is 2/5 of two slot for winding spacings.Other composition is identical with embodiment one with annexation.
Embodiment four: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is that the height of the notch of the described first groove 1-3 and the second groove 2-3 is 1/2 of internal stator armature height.Other composition is identical with embodiment one with annexation.
Embodiment five: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is that the height of the notch of the described first groove 1-3 and the second groove 2-3 is 3/5 of internal stator armature height.Other composition is identical with embodiment one with annexation.
Embodiment six: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is center line space phase shift on circumference of center line and the second groove 2-3 of the described first groove 1-3, and the dislocation angle is 8 degree.Other composition is identical with embodiment one with annexation.
Embodiment seven: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is center line space phase shift on circumference of center line and the second groove 2-3 of the described first groove 1-3, and the dislocation angle is 10 degree.Other composition is identical with embodiment one with annexation.
Embodiment eight: as Fig. 1, Fig. 2, shown in Figure 3, the difference of present embodiment and embodiment one is center line space phase shift on circumference of center line and the second groove 2-3 of the described first groove 1-3, and the dislocation angle is 12 degree.Other composition is identical with embodiment one with annexation.
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, bigger to the motor properties influence.
The magnetic hysteresis location torque is because the hysteresis effect of core material produces.When the rotor permanent magnetic field rotated, main flux is alternation in stator core, because the hysteresis of ferromagnetic material phase shift variations occurred between air gap main flux and the permanent magnetism magnetomotive force, had produced loss, had therefore caused the generation of hysteresis torque.The size of magnetic hysteresis loss is just 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 teeth groove moment, is to be caused by the stator core caused magnetic resistance inhomogeneous broadening effect of slotting, and the reluctance torque that produces when the magnetomotive force effect of rotor permanent magnetism 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.
The permanent magnet synchronous motor location torque directly influences the precision of motor, reduces the performance of permanent magnet synchronous motor.Adopt the fluting misconstruction, can effectively reduce the permanent magnet synchronous motor location torque.
Claims (8)
1. the dislocation notching construction hangs down the location torque outer rotor permanent magnet motor, and it is made up of first outer rotor permanent magnet motor (1), second outer rotor permanent magnet motor (2);
The external rotor (1-1) that it is characterized in that first outer rotor permanent magnet motor (1) is connected with the coaxial same-phase of external rotor (2-1) of second outer rotor permanent magnet motor (2); Wherein have first groove (1-3) between two adjacent windings on the internal stator (1-2) of first outer rotor permanent magnet motor (1); Wherein have second groove (2-3) between two adjacent windings on the internal stator (2-2) of second outer rotor permanent magnet motor (2); The width of the notch of first groove (1-3) and second groove (2-3) all is 1/3 or 2/5 of two slot for winding spacings, and the height of notch is 1/2 or 3/5 of internal stator armature height; The internal stator (1-2) of first outer rotor permanent magnet motor (1) is connected with internal stator (2-2) coaxial line of second outer rotor permanent magnet motor (2), and to make center line space phase shift on circumference of center line and second groove (2-3) of first groove (1-3) on it, dislocation angle be 6 degree～14 degree.
2. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, and the width that it is characterized in that the notch of described first groove (1-3) and second groove (2-3) all is 1/3 of two slot for winding spacings.
3. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, and the width that it is characterized in that the notch of described first groove (1-3) and second groove (2-3) all is 2/5 of two slot for winding spacings.
4. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, and the height that it is characterized in that the notch of described first groove (1-3) and second groove (2-3) is 1/2 of internal stator armature height.
5. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, and the height that it is characterized in that the notch of described first groove (1-3) and second groove (2-3) is 3/5 of internal stator armature height.
6. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, it is characterized in that center line space phase shift on circumference of center line and second groove (2-3) of described first groove (1-3), and the dislocation angle is 8 degree.
7. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, it is characterized in that center line space phase shift on circumference of center line and second groove (2-3) of described first groove (1-3), and the dislocation angle is 10 degree.
8. dislocation notching construction according to claim 1 hangs down the location torque outer rotor permanent magnet motor, it is characterized in that center line space phase shift on circumference of center line and second groove (2-3) of described first groove (1-3), and the dislocation angle is 12 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100931206A CN103199664A (en) | 2013-03-22 | 2013-03-22 | Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor |
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| CN2013100931206A CN103199664A (en) | 2013-03-22 | 2013-03-22 | Staggered grooved structure low location torque outer rotor permanent-magnet synchronous motor |
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Citations (7)
| 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 |
| CN1497818A (en) * | 2002-10-18 | 2004-05-19 | ������������ʽ���� | Permanent magnet slewing motor |
| CN101501964A (en) * | 2007-07-17 | 2009-08-05 | 北京前沿科学研究所 | Permanent electric machine for restraining tooth torque with compensation technology |
| CN102136786A (en) * | 2010-01-22 | 2011-07-27 | 株式会社模雅特 | Step motor capable of reducing detent torque |
| CN102214957A (en) * | 2011-06-09 | 2011-10-12 | 许晓华 | Improved structure of stator |
| CN102244448A (en) * | 2010-05-11 | 2011-11-16 | 上海电机学院 | Low-torque ripple permanent magnet flux-switching motor |
| CN102868266A (en) * | 2012-09-17 | 2013-01-09 | 北京航空航天大学 | High-reliability permanent-magnet synchronous motor based on redundancy and fault-tolerant technology |
-
2013
- 2013-03-22 CN CN2013100931206A patent/CN103199664A/en active Pending
Patent Citations (7)
| 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 |
| CN1497818A (en) * | 2002-10-18 | 2004-05-19 | ������������ʽ���� | Permanent magnet slewing motor |
| CN101501964A (en) * | 2007-07-17 | 2009-08-05 | 北京前沿科学研究所 | Permanent electric machine for restraining tooth torque with compensation technology |
| CN102136786A (en) * | 2010-01-22 | 2011-07-27 | 株式会社模雅特 | Step motor capable of reducing detent torque |
| CN102244448A (en) * | 2010-05-11 | 2011-11-16 | 上海电机学院 | Low-torque ripple permanent magnet flux-switching motor |
| CN102214957A (en) * | 2011-06-09 | 2011-10-12 | 许晓华 | Improved structure of stator |
| CN102868266A (en) * | 2012-09-17 | 2013-01-09 | 北京航空航天大学 | High-reliability permanent-magnet synchronous motor based on redundancy and fault-tolerant technology |
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Application publication date: 20130710 |