CN103199663A - Duplex-winding low location torque outer rotor permanent-magnet synchronous motor - Google Patents
Duplex-winding low location torque outer rotor permanent-magnet synchronous motor Download PDFInfo
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- CN103199663A CN103199663A CN2013100931136A CN201310093113A CN103199663A CN 103199663 A CN103199663 A CN 103199663A CN 2013100931136 A CN2013100931136 A CN 2013100931136A CN 201310093113 A CN201310093113 A CN 201310093113A CN 103199663 A CN103199663 A CN 103199663A
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Abstract
The invention relates to the technical field of permanent-magnet synchronous motors, in particular to a duplex-winding low location torque outer rotor permanent-magnet synchronous motor. In order to solve the problem that a natural location torque exists in an existing permanent-magnet synchronous motor, thus an application range of the permanent-magnet synchronous motor in control of low-speed performance and a high-precision position is limited A first gap and a second gap are arranged among the inner circle faces of permanent-magnet outer rotor yokes, an outer circle face of a first group of an inner stator magnetic pole and an outer circle face of a second group of an inner stator magnetic pole. A shaft on an outer shell is embedded into an inner hole of a first bearing and an inner hole of a second bearing, so that the permanent-magnet outer rotor yokes and the outer shell rotates relative to the first group of the inner stator magnetic pole and the second group of the inner stator magnetic pole in a concentric mode. The first group of the inner stator magnetic pole is dislocated relative to the annular phase of the second group of the inner stator magnetic poles, and the dislocation angle is 10-13 degrees. According to the duplex-winding low location torque outer rotor permanent-magnet synchronous motor, the inherent location torque of the permanent-magnet synchronous motor can be effectively reduced, the reduction margin is 25-30% of an inherent location torque of a traditional motor, and the duplex-winding low location torque outer rotor permanent-magnet synchronous motor has the advantage of being 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 double winding, 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 double winding hangs down the location torque outer rotor permanent magnet motor, is made up of first winding, second winding, first group of internal stator magnetic pole, second group of internal stator magnetic pole, clutch shaft bearing, second bearing, permanent-magnetic outer rotor yoke, shell;
First winding is embedded in first group of internal stator magnetic pole, second winding is embedded in second group of internal stator magnetic pole, first group of internal stator magnetic pole is connected side by side with second group of internal stator magnetic pole concentric, the endoporus left side of first group of internal stator magnetic pole is inlaid with clutch shaft bearing, and the endoporus right side of second group of internal stator magnetic pole is inlaid with second bearing; The periphery of permanent-magnetic outer rotor yoke is connected with the inner headed face of shell, the centre bore connecting axle of the right-hand end of shell is provided with first gap and second gap between the periphery of the inner headed face of permanent-magnetic outer rotor yoke and first group of internal stator magnetic pole and the periphery of second group of internal stator magnetic pole; Axle on the shell is embedded in the endoporus of the endoporus of clutch shaft bearing and second bearing, makes the relative first group of internal stator magnetic pole with shell of permanent-magnetic outer rotor yoke and second group of internal stator magnetic pole coaxial rotation; First group of relative second group of internal stator magnetic pole circumferential phase dislocation of internal stator magnetic pole, dislocation angle are 10 degree～13 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 winding 1, second winding 2, first group of internal stator magnetic pole 3, second group of internal stator magnetic pole 4, clutch shaft bearing 5, second bearing 6, permanent-magnetic outer rotor yoke 7, shell 8;
Embodiment two: as Fig. 1, Fig. 2, shown in Figure 3, present embodiment is described first group of internal stator magnetic pole, 3 relative second group of internal stator magnetic pole 4 circumferential phase dislocation with the difference of embodiment one, and the dislocation angle is 11 degree.Other composition is identical with embodiment one with annexation.
Embodiment three: as Fig. 1, Fig. 2, shown in Figure 3, present embodiment is described first group of internal stator magnetic pole, 3 relative second group of internal stator magnetic pole 4 circumferential phase dislocation with the difference of embodiment one, and the dislocation angle is 11.5 degree.Other composition is identical with embodiment one with annexation.
Embodiment four: as Fig. 1, Fig. 2, shown in Figure 3, present embodiment is described first group of internal stator magnetic pole, 3 relative second group of internal stator magnetic pole 4 circumferential phase dislocation with the difference of embodiment one, 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.
Because first group of internal stator magnetic pole 3 relative second group of internal stator magnetic pole 4 circumferential phase dislocation, be that first winding 1 on it and second winding 2 are also in the circuferential spacing phase shift, the position of stator teeth groove is also in the circuferential spacing phase shift like this, the stator tooth effect of grooves of the stator tooth effect of grooves of first winding, 1 correspondence and second winding, 2 correspondences is cancelled out each other, thereby has reduced the motor location torque.
Claims (4)
1. double winding hangs down the location torque outer rotor permanent magnet motor, and it is made up of first winding (1), second winding (2), first group of internal stator magnetic pole (3), second group of internal stator magnetic pole (4), clutch shaft bearing (5), second bearing (6), permanent-magnetic outer rotor yoke (7), shell (8);
First winding (1) is embedded in first group of internal stator magnetic pole (3), second winding (2) is embedded in second group of internal stator magnetic pole (4), first group of internal stator magnetic pole (3) is connected side by side with second group of internal stator magnetic pole (4) concentric, the endoporus left side of first group of internal stator magnetic pole (3) is inlaid with clutch shaft bearing (5), and the endoporus right side of second group of internal stator magnetic pole (4) is inlaid with second bearing (6); The periphery of permanent-magnetic outer rotor yoke (7) is connected with the inner headed face of shell (8), the centre bore connecting axle (8-1) of the right-hand end of shell (8) is provided with first gap (3-1) and second gap (4-1) between the periphery of the inner headed face of permanent-magnetic outer rotor yoke (7) and first group of internal stator magnetic pole (3) and the periphery of second group of internal stator magnetic pole (4); Axle (8-1) on the shell (8) is embedded in the endoporus of the endoporus of clutch shaft bearing (5) and second bearing (6), makes the relative first group of internal stator magnetic pole with shell (8) of permanent-magnetic outer rotor yoke (7) (3) and second group of internal stator magnetic pole (4) coaxial rotation; It is characterized in that the dislocation of the relative second group of internal stator magnetic pole of first group of internal stator magnetic pole (3) (4) circumferential phase, the dislocation angle is 10 degree～13 degree.
2. the low location torque outer rotor permanent magnet motor of double winding according to claim 1 is characterized in that the dislocation of the relative second group of internal stator magnetic pole of described first group of internal stator magnetic pole (3) (4) circumferential phase, and the dislocation angle is 11 degree.
3. the low location torque outer rotor permanent magnet motor of double winding according to claim 1 is characterized in that the dislocation of the relative second group of internal stator magnetic pole of described first group of internal stator magnetic pole (3) (4) circumferential phase, and the dislocation angle is 11.5 degree.
4. the low location torque outer rotor permanent magnet motor of double winding according to claim 1 is characterized in that the dislocation of the relative second group of internal stator magnetic pole of described first group of internal stator magnetic pole (3) (4) circumferential phase, and the dislocation angle is 12 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100931136A CN103199663A (en) | 2013-03-22 | 2013-03-22 | Duplex-winding low location torque outer rotor permanent-magnet synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100931136A CN103199663A (en) | 2013-03-22 | 2013-03-22 | Duplex-winding low location torque outer rotor permanent-magnet synchronous motor |
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| CN103199663A true CN103199663A (en) | 2013-07-10 |
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| CN2013100931136A Pending CN103199663A (en) | 2013-03-22 | 2013-03-22 | Duplex-winding low location torque outer rotor permanent-magnet synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988600A (en) * | 2018-09-28 | 2018-12-11 | 成都微精电机股份公司 | A kind of cramped construction suitable for high-precision force torque motor |
Citations (4)
| 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 |
| CN101005227A (en) * | 2007-01-16 | 2007-07-25 | 北京航空航天大学 | Coaxial two section four margin brushless DC torque motor |
| JP2009291036A (en) * | 2008-05-30 | 2009-12-10 | Denso Corp | Ac motor |
| CN102244448A (en) * | 2010-05-11 | 2011-11-16 | 上海电机学院 | Low-torque ripple permanent magnet flux-switching motor |
-
2013
- 2013-03-22 CN CN2013100931136A patent/CN103199663A/en active Pending
Patent Citations (4)
| 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 |
| CN101005227A (en) * | 2007-01-16 | 2007-07-25 | 北京航空航天大学 | Coaxial two section four margin brushless DC torque motor |
| JP2009291036A (en) * | 2008-05-30 | 2009-12-10 | Denso Corp | Ac motor |
| CN102244448A (en) * | 2010-05-11 | 2011-11-16 | 上海电机学院 | Low-torque ripple permanent magnet flux-switching motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988600A (en) * | 2018-09-28 | 2018-12-11 | 成都微精电机股份公司 | A kind of cramped construction suitable for high-precision force torque motor |
| CN108988600B (en) * | 2018-09-28 | 2024-04-02 | 成都微精电机股份公司 | Compact structure suitable for high accuracy torque motor |
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Application publication date: 20130710 |