CN1063878C - Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings - Google Patents
Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings Download PDFInfo
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- CN1063878C CN1063878C CN98111107A CN98111107A CN1063878C CN 1063878 C CN1063878 C CN 1063878C CN 98111107 A CN98111107 A CN 98111107A CN 98111107 A CN98111107 A CN 98111107A CN 1063878 C CN1063878 C CN 1063878C
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- stator
- rotor
- permanent magnet
- speed regulating
- wide speed
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Abstract
The present invention relates to a double-convex pole permanent-magnet machine with multiple split windings for wide speed regulation, which is a double-convex pole permanent-magnet machine adopting a mode of a coil winding tap to carry out speed regulation. The present invention is composed of a stator and a rotor, the stator and the rotor are both in double-convex pole structures, and a coil tap for speed regulation is arranged in each coil winding totally. When a permanent magnet is arranged on the stator, the permanent magnet is inserted between a yoke part of the stator or a stator tooth and the yoke part of the stator; when the permanent magnet is arranged on the rotor, the permanent magnet is inserted into a rotor core and on the surface of the rotor tooth. The present invention has the advantages of quick dynamic response, little copper loss, high efficiency, obvious weak magnetic effects and wide speed regulating range.
Description
The present invention is a kind of doubly salient permanent magnet motor with wide range speed control function, belongs to the technical field that motor is made.
At the beginning of the nineties, people such as U.S. motor expert T.A.Lipo propose to install permanent magnet additional on motor stator or rotor at the deficiency of switch magneto, have formed a kind of brand-new motor--doubly salient permanent magnet motor.The same with other all kinds of magnetoes, because the back-emf that permanent magnetic field produces increases with rotating speed, the speed adjustable range of this motor is restricted.For other magneto, as permagnetic synchronous motor, can be by control direct-axis current i
dRealize weak magnetic control system, improve the rotating speed of motor scope effectively.But this method can't be applicable to doubly salient permanent magnet motor.Therefore, successively the someone has proposed three kinds of schemes, has weakened the magnetic field of doubly salient permanent magnet motor.
First kind of scheme is to place a special winding (weak magnetic winding) with the position of permanent magnetic field axis normal on stator, when the feeding magnetic direction that electric current produced is opposite with permanent magnetic field or identical in this winding, control the size and Orientation of electric current in this winding, can realize weak magnetic.But there is following shortcoming in this scheme: 1. increase extra winding, thereby increased cost, and limited because of the stator slot space, weak magnetic winding sometimes is difficult to arrange; 2. need circuit independently to control electric current in this winding, make the control circuit complexity, cost increases; 3. weak magnetic winding will consume certain energy, and electric efficiency is reduced; 4. since weak magnetic magnetic field must could realize a little less than the magnetic through permanent magnet, but the reluctivity of permanent magnet very big (suitable) itself with air, so the magnetic resistance of weak magnetic magnetic circuit is very big, weak magnetic effect is unsatisfactory.
Second kind of scheme is to adopt mechanical means that permanent magnet is pulled out from stator core, weakens permanent magnetic field.
The third scheme be in stator outside with two magnetic conductors, with the direct short-circuit of permanent magnet two ends, permanent magnet flux is passed through from this magnetic conductor, thereby has reduced the permanent magnet flux in the phase winding.
The two kinds of methods in back all belong to mechanical type, need specific purpose tool, operating difficulties.Must guarantee also that in second kind of scheme the permanent magnetism physical efficiency is free to slide in iron core, both increase additional air gap, also make to make complexity more is installed.Their shortcoming is conspicuous, and actual application value is little.And above three kinds of methods only are applicable to that permanent magnet is fixed in the permanent-magnet type double salient-pole electric machine on the stator, are not suitable for permanent magnet with rotor rotor rotated permanent magnet-type motor.
The purpose of this invention is to provide a kind of electric machine speed regulation wide ranges, under the situation that does not increase coil, realize the wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings of weak magnetic.
Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings of the present invention is made up of stator and rotor two large divisions, and stator and rotor are salient-pole structure, all is provided with the coil tap that speed governing is used in each coil windings.When laying permanent magnet on stator, stator permanent magnet is inserted in stator yoke portion, also can be with the circular arc magnetic catch between stator tooth and stator yoke portion.When permanent magnet was placed on the rotor, rotor permanent magnet was inserted in rotor core inside, also rotor permanent magnet can be attached to the surface of rotor tooth.Be with centralized winding on stator tooth, the winding on relative two teeth in space is through being in series or in parallel to form a phase winding, as A and A ' formation A phase winding, and B and B ' formation B phase winding, C and C ' formation C phase winding.Winding on each tooth is equipped with some taps, works as K switch
1Closure, K
2, K
3During open circuit, the number of turn of every phase winding is N; Work as K
2Closure, K
1, K
3During open circuit, the number of turn of every phase is N/2; Work as K
1, K
2Open circuit, K
3When closed, every phase number of turn is N/4; By control switch, just can reach the purpose of speed governing.
The invention has the advantages that speed control coil is exactly former main coil, do not need to increase in addition new winding and additional mechanical device, the both simple structure of motor has reduced the cost of motor again.In addition, when low speed, every phase winding has the more number of turn, and guaranteeing has enough big output torque, along with the rising of rotating speed, pass through tap changing, every phase winding number of turn is reduced, the also proportional minimizing of the back-emf that permanent magnetic field produces in every phase winding, winding inductance descends by square proportionate relationship, winding current increases, thereby the permanent power range of speeds of motor is increased.Also have, after every phase winding number of turn reduced, resistance and inductance all reduced thereupon, so dynamic response is faster, copper loss reduces, efficient is higher.Weak magnetic effect is obvious, and speed adjustable range is wideer.
Fig. 1 is a mechanical structure schematic diagram of the present invention.Comprising stator 1, rotor 2, coil windings 3, permanent magnet 4.
Fig. 2 is the electrical block diagram of secondary tapped coil winding among the present invention.A, A ', B, B ', C, C ' and K switch in the coil windings are wherein arranged
1, K
2, K
3
Embodiment of the present invention are:
Adopt stator 8 teeth, the stator permanent magnetic type electric of rotor 6 teeth, on stator tooth, be with centralized winding, winding on two relative teeth of the space of stator tooth is through being in series or in parallel to form a phase winding, as A, A ' formation A phase winding, B, B ' formation B phase winding, and the like, winding on each tooth is equipped with tap, what of what and the pairing umber of turn of each grade tap of tap can depend on the needs, three-phase coil winding with two utmost point taps is an example, in coil windings A, establish two taps, in A ', also establish two taps, accordingly K switch is passed through in tap among the coil windings A and the tap among the A ' then
2, K
3Join, coil windings A and A ' are by K switch
1Join, B mutually and the C also taps approach of correspondence employing A phase has mutually so just formed the connection form of two utmost point tap three-phase coil windings.Work as K switch
1Closure, K
2, K
3During open circuit, every phase winding number of turn is N; Work as K
2Closure, K
1, K
3During open circuit, every phase number of turn is N/2; Work as K
1, K
2Closed circuit, K
3When closed, every phase number of turn is N/4.K switch
1, K
2, K
3Can be electronic switch, also can be relay or mechanical switch, and the opening and closing of switch can be finished automatically by other control appliance control.There is not winding on the rotor tooth.Yoke portion at stator is provided with permanent magnet.Just can realize the present invention according to the above.
Claims (5)
1. wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings, formed by stator and rotor two parts, it is characterized in that stator (1) and rotor (2) are the biconvex electrode structure, on stator tooth, be with centralized winding, winding on relative two teeth in space all is provided with the coil tap that speed governing is used through being in series or in parallel to form a phase winding in each coil windings (3).
2. wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings according to claim 1, when it is characterized in that laying permanent magnet (4) on the stator (1), stator permanent magnet is inserted in stator yoke portion.
3. wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings according to claim 2, it is characterized in that also can be with the circular arc magnetic catch between stator tooth and stator yoke portion.
4. wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings according to claim 1 is characterized in that permanent magnet (4) is placed on the rotor (2), and rotor permanent magnet is inserted in rotor core inside.
5. wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings according to claim 4 is characterized in that also rotor permanent magnet to be attached to the surface of rotor tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111107A CN1063878C (en) | 1998-01-09 | 1998-01-09 | Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98111107A CN1063878C (en) | 1998-01-09 | 1998-01-09 | Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186369A CN1186369A (en) | 1998-07-01 |
| CN1063878C true CN1063878C (en) | 2001-03-28 |
Family
ID=5221112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98111107A Expired - Fee Related CN1063878C (en) | 1998-01-09 | 1998-01-09 | Wide speed regulating range permanent magnetic motor with two salient poles and multi-tapping windings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063878C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009000162A1 (en) * | 2007-06-27 | 2008-12-31 | Shizheng He | A refrigerant compressor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944340A (en) * | 2014-05-15 | 2014-07-23 | 湖州佳力机电科技有限公司 | Doubly-salient permanent magnet motor for washing machine |
| CN107026527A (en) * | 2017-05-17 | 2017-08-08 | 北京佳宇康华科技有限公司 | Multi-tap winding wide speed-regulation permanent-magnet synchronous motor |
| CN108988520B (en) * | 2018-07-25 | 2019-07-23 | 浙江大学 | A kind of double salient-pole electric machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749990A (en) * | 1970-09-18 | 1973-07-31 | Siemens Ag | Brushless rotary converter for continuous speed control and single phase alternating current |
| JPH0946941A (en) * | 1995-08-03 | 1997-02-14 | Matsushita Electric Ind Co Ltd | Motor |
-
1998
- 1998-01-09 CN CN98111107A patent/CN1063878C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3749990A (en) * | 1970-09-18 | 1973-07-31 | Siemens Ag | Brushless rotary converter for continuous speed control and single phase alternating current |
| JPH0946941A (en) * | 1995-08-03 | 1997-02-14 | Matsushita Electric Ind Co Ltd | Motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009000162A1 (en) * | 2007-06-27 | 2008-12-31 | Shizheng He | A refrigerant compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186369A (en) | 1998-07-01 |
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