CN101355286B - Mixing excitation type permanent magnet switch magnetic linkage electric machine - Google Patents

Mixing excitation type permanent magnet switch magnetic linkage electric machine Download PDF

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Publication number
CN101355286B
CN101355286B CN2008101209733A CN200810120973A CN101355286B CN 101355286 B CN101355286 B CN 101355286B CN 2008101209733 A CN2008101209733 A CN 2008101209733A CN 200810120973 A CN200810120973 A CN 200810120973A CN 101355286 B CN101355286 B CN 101355286B
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China
Prior art keywords
permanent magnet
iron core
excitation
electric machine
magnetic linkage
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CN2008101209733A
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Chinese (zh)
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CN101355286A (en
Inventor
沈建新
王灿飞
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浙江大学
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Priority to CN2008101209733A priority Critical patent/CN101355286B/en
Publication of CN101355286A publication Critical patent/CN101355286A/en
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Publication of CN101355286B publication Critical patent/CN101355286B/en

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Abstract

The invention discloses a hybrid exciting type permanent-magnet switched magnetic linkage motor, comprising a rotor, a stator and a casing which does not conduct magnet, wherein the rotor is a toothed groove type iron core, a stator core consists of a permanent magnet, a first U-shaped iron core, a reluctance piece and a second U-shaped iron core which circulate in sequence, an N pole and an S pole of the permanent magnet are arranged alternately, the permanent magnet and one side of the first U-shaped iron core and one side of the second U-shaped iron core clung to two sides of the permanent magnet form an armature tooth, the reluctance piece and the other sides of the first U-shaped iron core and the second U-shaped iron core clung to the two sides of the permanent magnet form an excitation tooth, the armature tooth is wound with a three-phase armature winding, and the excitation tooth is wound with a single phase excitation winding. In the hybrid exciting type permanent-magnet switch magnetic linkage motor, an air gap field consists of an electrical excitation magnetic field generated by the excitation winding and a magnetic field generated by the permanent magnet, and is adjustable so that the motor has excellent controllability, the utilization rate of the permanent magnet is increased, the motor has considerable fault-tolerance capability, and the range of the running speed of the motor is easily widened to meet different application situations.

Description

Mixing excitation type permanent magnet switch magnetic linkage electric machine
Technical field
The present invention relates to permanent-magnet brushless DC electric machine, especially mixing excitation type permanent magnet switch magnetic linkage electric machine belongs to the motor manufacturing technology field.
Background technology
Motor is the main driver part in the modern industry system, and the motor of excellent performance is most important to whole drive system.In recent years, development along with power electronic technology, permanent magnetic material and Control Technique of Microcomputer, permanent-magnet brushless DC electric machine is developed rapidly, permanent-magnet brushless DC electric machine has efficiently, the characteristics of high power density, along with the appearance of high performance permanent magnetic materials, improved the power density and the performance of permanent-magnet brushless DC electric machine greatly.On the other hand, switched reluctance machines is because characteristics such as simple in structure, good reliability obtain application more and more widely.In the middle of the stator tooth of switched reluctance machines, place the permanent-magnetic-switch flux linkage motor that permanent magnet obtains, combine the characteristics of switched reluctance machines and magneto, characteristics such as existing switched reluctance machines property simple and reliable for structure is good have characteristics such as magneto power density height simultaneously concurrently.In permanent-magnetic-switch flux linkage motor, rotor only is made of core lamination, and is simple and reliable for structure; Permanent magnet and armature winding all place on the stator, are highly susceptible to the heat radiation cooling.
But the air-gap field of traditional permanent-magnetic-switch flux linkage motor is mainly produced by permanent magnet excitation, is difficult to regulate, and has so just limited the operational speed range of motor.In addition, also exist leakage field serious in traditional permanent-magnetic-switch flux linkage motor, problem such as the permanent magnet utilance is low.
Summary of the invention
The objective of the invention is to propose a kind of mixing excitation type permanent magnet switch magnetic linkage electric machine, electricity excitation magnetic field that its excitation winding produces and permanent magnetic field produce magnetic field and constitute air-gap field jointly, thereby realize that air-gap field is adjustable, obtain the excellent more controllability of motor, improve the permanent magnet utilance simultaneously and possess suitable fault-tolerant ability, be fit to be applied to fields such as industrial transmission.
Mixing excitation type permanent magnet switch magnetic linkage electric machine of the present invention, comprise rotor, stator and non-magnetic casing, rotor is the Alveolus type iron core, be fixed on the interior stator core of casing by permanent magnet, first " U " shape iron core, magnetoresistive bit and second " U " the shape iron core formation that circulates successively, the permanent magnet N utmost point, the S utmost point is alternately arranged, permanent magnet and be close to first of permanent magnet both sides, second " U " one side unshakable in one's determination constitutes armature tooth, magnetoresistive bit and be close to first of magnetoresistive bit both sides, second " U " another side unshakable in one's determination constitutes the excitation tooth, threephase armature winding around the home on the armature tooth, single-phase around the home excitation winding on the excitation tooth, threephase armature winding and excitation winding are respectively concentrated winding.
Above-mentioned rotor core is formed by silicon steel plate packing.
Above-mentioned first " U " shape is unshakable in one's determination and second " U " is unshakable in one's determination is formed by silicon steel plate packing.First " U " shape opening unshakable in one's determination and that second " U " is unshakable in one's determination can be the standard-sized sheet mouth, also can be half opening.
Among the present invention, said permanent magnet is neodymium iron boron, SmCo or the ferrite of parallel magnetization.Said magnetoresistive bit is plastics, aluminium, not magnetic conduction steel or pottery.Said casing is aluminium or magnetic conduction steel not.
Because the saliency that rotor tooth forms, along with the change of rotor-position, the permanent magnet excitation magnetic linkage generation bipolarity of armature winding institute hinge changes, and induction produces back-emf thus, can drive rotor rotation if apply suitable electric current to armature winding.
During work, the threephase armature winding of mixing excitation type permanent magnet switch magnetic linkage electric machine is linked to each other with the control circuit that connects DC power supply.Utilize rotor-position sensor detection rotor position, determine the conducting state of threephase armature winding thus, because it is the three-phase voltage of f that DC power supply is given three phase winding loading frequencies by control circuit, then in the threephase armature winding, flow through the three-phase current that frequency is all f, so rotor speed n=60f/p (p is the armature winding number of pole-pairs).Be added to voltage swing and frequency on the threephase armature winding, the then speed of scalable motor by control.Single-phase excitation winding is connect DC power supply, as required excitation winding is imposed electric current forward or backwards, the permanent magnetism air-gap field is played the effect of strengthening or weakening.By adjusting to exciting current direction and size, realize adjusting, thereby regulate the motor speed of service, torque etc. the synthetic air-gap field of motor, be fit to the needs of different occasions.In addition, mixing excitation type permanent magnet switch magnetic linkage electric machine disclosed by the invention, the armature winding arrangement mode that is adopted, armature winding and excitation winding are intervally arranged, mutual inductance is very little between the armature winding, realized the electromagnetic isolated between the armature winding, makes motor possess certain fault-tolerant ability like this.Beneficial effect of the present invention is:
1. permanent magnet excitation and excitation winding electricity excitation is synthesized air-gap field jointly, has realized the controllability of air-gap field, makes mixing excitation type permanent magnet switch magnetic linkage electric machine have better controllability.
2. rotor only is made of core lamination, and is simple in structure, reliable.
3. permanent magnet and winding all place on the stator, are easy to heat radiation, cooling, improve power density.
4. armature winding and excitation winding are intervally arranged, between the armature winding mutual inductance very little, realized the electromagnetic isolated between the armature winding, have higher fault freedom.
5. the excitation tooth that has magnetoresistive bit plays the isolated effect of physics to armature winding, further improves the fault freedom of motor.
6. the permanent magnet utilance improves.
7. can adopt conventional permanent magnet brushless control of DC method, control flexible, various.
Description of drawings
Fig. 1 is the structural representation of mixing excitation type permanent magnet switch magnetic linkage electric machine of the present invention.
Embodiment
With reference to Fig. 1, mixing excitation type permanent magnet switch magnetic linkage electric machine comprises rotor 1, stator 2 and non-magnetic casing 5, rotor is the Alveolus type iron core, be fixed on the interior stator core of casing by permanent magnet 2.1, first " U " shape iron core 2.2, magnetoresistive bit 2.3 and second " U " shape iron core 2.4 formation that circulates successively, the permanent magnet N utmost point, the S utmost point is alternately arranged, permanent magnet 2.1 and be close to first of permanent magnet both sides, second " U " one side unshakable in one's determination constitutes armature tooth, magnetoresistive bit 2.3 and be close to first of magnetoresistive bit both sides, second " U " another side unshakable in one's determination constitutes the excitation tooth, threephase armature winding 3 around the home on the armature tooth, single-phase around the home excitation winding 4 on the excitation tooth, threephase armature winding 3 and excitation winding 4 are respectively concentrated winding.
In the illustrated example, rotor 1 has 10 teeth, stator has 6 armature tooth and 6 excitation teeth that are wound with excitation winding of being wound with the threephase armature winding, permanent magnet of each armature tooth therebetween, the adjacent permanent magnet N utmost point, the S utmost point are alternately arranged, totally 6 permanent magnets, magnetoresistive bit of each excitation tooth therebetween, totally 6 magnetoresistive bit.The threephase armature winding is two pairs and extremely concentrates winding that single-phase excitation winding is six pairs and extremely concentrates winding.
Mixing excitation type permanent magnet switch magnetic linkage electric machine of the present invention, air-gap field is made of jointly the electricity excitation magnetic field of excitation winding generation and the magnetic field of permanent magnet generation, air-gap field is adjustable, make motor have excellent controllability, improve the permanent magnet utilance simultaneously and possess suitable fault-tolerant ability, be easy to enlarge the motor operational speed range, satisfy the different application occasion.

Claims (7)

1. mixing excitation type permanent magnet switch magnetic linkage electric machine, it is characterized in that comprising rotor (1), stator (2) and non-magnetic casing (5), rotor is the Alveolus type iron core, be fixed on the interior stator core of casing by permanent magnet (2.1), first " U " shape iron core (2.2), magnetoresistive bit (2.3) and second " U " shape iron core (2.4) formation that circulates successively, the permanent magnet N utmost point, the S utmost point is alternately arranged, permanent magnet (2.1) and be close to first of permanent magnet both sides, one side of second " U " shape iron core constitutes armature tooth, magnetoresistive bit (2.3) and be close to first of magnetoresistive bit both sides, the another side of second " U " shape iron core constitutes the excitation tooth, threephase armature winding (3) around the home on the armature tooth, single-phase around the home excitation winding (4) on the excitation tooth, threephase armature winding (3) and excitation winding (4) are respectively concentrated winding.
2. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that said rotor core is formed by silicon steel plate packing.
3. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that said first " U " shape iron core (2.2) and second " U " shape iron core (2.4) are to be formed by silicon steel plate packing.
4. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that the opening of said first " U " shape iron core (2.2) and second " U " shape iron core (2.4) is standard-sized sheet mouth or half opening.
5. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that said permanent magnet (2.1) is the neodymium iron boron of parallel magnetization, SmCo or ferrite.
6. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that said magnetoresistive bit (2.3) is plastics, aluminium, not magnetic conduction steel or pottery.
7. mixing excitation type permanent magnet switch magnetic linkage electric machine according to claim 1 is characterized in that said casing (5) is aluminium or magnetic conduction steel not.
CN2008101209733A 2008-09-09 2008-09-09 Mixing excitation type permanent magnet switch magnetic linkage electric machine CN101355286B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008101209733A CN101355286B (en) 2008-09-09 2008-09-09 Mixing excitation type permanent magnet switch magnetic linkage electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008101209733A CN101355286B (en) 2008-09-09 2008-09-09 Mixing excitation type permanent magnet switch magnetic linkage electric machine

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CN101355286A CN101355286A (en) 2009-01-28
CN101355286B true CN101355286B (en) 2010-08-04

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101552527B (en) * 2009-05-14 2010-12-08 浙江大学 A mixed excitation type switch magnetic linkage motor
CN102244448A (en) * 2010-05-11 2011-11-16 上海电机学院 Low-torque ripple permanent magnet flux-switching motor
CN101860158A (en) * 2010-05-18 2010-10-13 哈尔滨工业大学 Switch magnetic flow permanent magnet synchronous motor
CN101820192B (en) * 2010-05-19 2011-09-07 常州工学院 Mixed excitation permanent magnet flux switching motor
CN101860283B (en) * 2010-06-03 2012-11-21 常州工学院 Permanent magnet motor
CN102185451A (en) * 2011-04-19 2011-09-14 南京航空航天大学 Segmented rotor type magnetic flux switching motor with hybrid excitation and magnetic adjustment method
CN102611219A (en) * 2012-02-28 2012-07-25 东南大学 High-reliability half stator-tooth winded stator-surface mounted permanent magnet motor
CN103929031A (en) * 2013-01-11 2014-07-16 济南吉美乐电源技术有限公司 Composite-excitation double-excitation winding split rotor magnetic flux switching double-salient pole brushless DC generator
CN103199641A (en) * 2013-04-08 2013-07-10 东南大学 Stator permanent magnetic flux-switching bearing-free motor with U-shaped teeth
CN103259382B (en) * 2013-06-03 2016-04-06 东南大学 One opens winding mixed excitation electric machine
CN103807095B (en) * 2014-02-17 2016-04-13 南通大学 The wind generator system of independent phase control structure
WO2016198079A1 (en) * 2015-06-12 2016-12-15 Aalborg Universitet Double u-core switched reluctance machine
CN106655550B (en) * 2017-01-14 2019-01-18 山东理工大学 A kind of motorized roller motor
CN110098707B (en) * 2019-04-09 2021-02-19 浙江大学 Long magnetic conduction tooth double-salient pole hybrid excitation motor

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