CN101562384B - Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance - Google Patents

Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance Download PDF

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Publication number
CN101562384B
CN101562384B CN200910098785XA CN200910098785A CN101562384B CN 101562384 B CN101562384 B CN 101562384B CN 200910098785X A CN200910098785X A CN 200910098785XA CN 200910098785 A CN200910098785 A CN 200910098785A CN 101562384 B CN101562384 B CN 101562384B
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China
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magnetic
permanent
permanent magnet
casing
flux linkage
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Expired - Fee Related
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CN200910098785XA
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Chinese (zh)
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CN101562384A (en
Inventor
沈建新
王灿飞
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Zhejiang University ZJU
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Zhejiang University ZJU
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Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance. The motor comprises a rotor, a stator, three-phase armature windings and a casing, wherein the casing is made of magnetic conductive material; the rotor consists of toothspace-type core laminations; the stator fixed in the casing comprises first permanent magnets, a first U-shaped iron core, reluctance sheets and a second U-shaped iron core arranged one by one; N poles and S poles of the first permanent magnets are alternately arranged; armature teeth consist of the first permanent magnets and U-shaped iron core edges clinging to two sides of the first permanent magnets respectively; auxiliary teeth consist of the reluctance sheets and the U-shaped iron core edges clinging to two sides of the reluctance sheets respectively; the three-phase armature concentrated windings are wound round the armature teeth; second permanent magnets are arranged between the casing and the stator; and the first permanent magnets and the second permanent magnets in contact with the U-shaped iron cores have the same polarity on contact surface. The motor is simple in structure. Compared with the prior permanent-magnetic switching flux linkage motor, the motor has the advantages of improving anti-electromagnetic interference capability and electromagnetic compatibility and raising the rate of utilizing the permanent magnets, along with higher output power density and capability of avoiding magnetic leakage on the outer edge of the casing.

Description

Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance
Technical field
The present invention relates to permanent-magnetic-switch flux linkage motor.
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.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.Traditional error-tolerance type permanent magnet switch magnetic linkage motor comprises rotor, stator, threephase armature winding and casing.Rotor is made of the Alveolus type core lamination.The stator that is fixed in the casing comprises first permanent magnet, first " U " shape iron core, magnetoresistive bit and second " U " the shape iron core that is arranged in order, first " U " shape is unshakable in one's determination identical with second " U " shape core construction, first permanent magnet is along the circumference cutting orientation magnetizing, and the N utmost point, the S utmost point are alternately arranged; Armature tooth is made of first permanent magnet and " U " shape that is close to first permanent magnet both sides limit unshakable in one's determination, and auxiliary tooth is made of magnetoresistive bit and " U " shape iron core limit that is close to the magnetoresistive bit both sides, and the threephase armature winding is for concentrating winding, on armature tooth.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 there is more serious longitudinal end leakage field in traditional error-tolerance type permanent magnet switch magnetic linkage motor.Leakage field causes the permanent magnet utilance not high on the one hand, has also caused electromagnetic interference and electromagnetic compatibility problem on the other hand, has also limited motor case simultaneously and must adopt non-magnet_conductible material.
Summary of the invention
The objective of the invention is to propose a kind of magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, to improve electromagnetic interference and Electromagnetic Compatibility for overcoming the brow leakage problem of traditional error-tolerance type permanent magnet switch magnetic linkage motor; Improve running reliability of motor.
Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance of the present invention, comprise rotor, stator, threephase armature winding and casing, rotor is made of the Alveolus type core lamination, the stator that is fixed in the casing comprises first permanent magnet that is arranged in order, first " U " shape iron core, magnetoresistive bit and second " U " shape iron core, first " U " shape is unshakable in one's determination identical with second " U " shape core construction, first permanent magnet is along the circumference cutting orientation magnetizing, the N utmost point, the S utmost point is alternately arranged, armature tooth is made of first permanent magnet and " U " shape that is close to first permanent magnet both sides limit unshakable in one's determination, auxiliary tooth is made of magnetoresistive bit and " U " shape that is close to magnetoresistive bit both sides limit unshakable in one's determination, the threephase armature winding is for concentrating winding, on armature tooth, it is characterized in that casing is a permeability magnetic material, is equipped with second permanent magnet between casing and stator, second permanent magnet magnetizes along radial direction, and is identical with the polarity of second permanent magnet on contact-making surface with first permanent magnet of " U " shape contact unshakable in one's determination.
Above-mentioned rotor, first " U " shape iron core and second " U " shape iron core can be formed by silicon steel plate packing.Said casing is rolled into by steel plate or is formed by silicon steel plate packing.
First permanent magnet among the present invention is neodymium iron boron, SmCo or the ferrite of parallel magnetization.Second permanent magnet is neodymium iron boron, SmCo or the ferrite of parallel magnetization or radial magnetizing.
Among the present invention first " U " shape opening unshakable in one's determination and second " U " shape iron core can be standard-sized sheet mouth or half opening.
Magnetoresistive bit among the present invention can be plastics, aluminium, not magnetic conduction steel or pottery.
Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance of the present invention can be an electric rotating machine, also can be linear electric motors.
Beneficial effect of the present invention:
Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance of the present invention is simple in structure, adopt second permanent magnet to strengthen permanent magnetic field, can effectively increase the variable quantity of the permanent magnetism magnetic linkage of armature winding linkage, increase back-emf, thereby obtain higher power density output.Because casing adopts permeability magnetic material, therefore can avoid the not outer leakage field of magnetic conduction casing existence fully, improve anti-electromagnetic interference of motor and Electromagnetic Compatibility, improve the permanent magnet utilance.The threephase armature winding only on armature tooth, does not have winding on the auxiliary tooth, has only the limit of a coil in such groove, the coil spacing coiling, and auxiliary tooth has been realized the isolated and electromagnetic isolated of the physics between the coil, makes motor have good fault-tolerance.
Description of drawings
Fig. 1 is a kind of structural representation of magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, and the direction of arrow is the permanent magnet magnetizing direction among the figure;
Fig. 2 is the structural representation of another kind of magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, and the direction of arrow is the permanent magnet magnetizing direction among the figure.
Embodiment
Fig. 1 is the structure of rotary magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, comprise rotor 1, stator 2, threephase armature winding 3 and casing 4, casing is a permeability magnetic material, rotor is made of the Alveolus type core lamination, the stator that is fixed in the casing comprises first permanent magnet 2.1 that is arranged in order, first " U " shape iron core 2.2, magnetoresistive bit 2.3 and second " U " shape iron core 2.5, first " U " shape is unshakable in one's determination identical with second " U " shape core construction, first permanent magnet is along the circumference cutting orientation magnetizing, the N utmost point, the S utmost point is alternately arranged, armature tooth is made of first permanent magnet 2.1 and " U " shape that is close to first permanent magnet both sides limit unshakable in one's determination, auxiliary tooth is made of magnetoresistive bit and " U " shape that is close to magnetoresistive bit both sides limit unshakable in one's determination, in the illustrated example, rotor has 10 teeth, arrange 6 armature tooths and 6 auxiliary spaces of teeth of stator, threephase armature winding 3 is for concentrating winding, on armature tooth, between casing and stator, be equipped with second permanent magnet 2.4, second permanent magnet magnetizes along radial direction, and is identical with the polarity of second permanent magnet on contact-making surface with first permanent magnet of " U " shape contact unshakable in one's determination.
Shown in Figure 2 is the orthoscopic magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, and in the illustrated example, mover 2 (being equivalent to the stator 2 in the electric rotary machine) has 12 utmost points, at mover length internal stator 1 (being equivalent to the rotor 1 in the electric rotary machine) 10 utmost points is arranged.Mover comprises first permanent magnet 2.1 that is arranged in order, first " U " shape iron core 2.2, magnetoresistive bit 2.3 and second " U " shape iron core 2.5, first " U " shape is unshakable in one's determination identical with second " U " shape core construction, the first permanent magnet N utmost point, the S utmost point is alternately arranged, armature tooth is made of first permanent magnet 2.1 and " U " shape that is close to first permanent magnet both sides limit unshakable in one's determination, auxiliary tooth is made of magnetoresistive bit and " U " shape that is close to magnetoresistive bit both sides limit unshakable in one's determination, arrange 6 armature tooths and 6 auxiliary spaces of teeth, be wound with the threephase armature winding on the armature tooth, between casing 4 and mover, be equipped with second permanent magnet 2.4, identical with first permanent magnet of " U " shape contact unshakable in one's determination with the polarity of second permanent magnet on contact-making surface.

Claims (8)

1. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance, comprise rotor (1), stator (2), threephase armature winding (3) and casing (4), rotor is made of the Alveolus type core lamination, the stator that is fixed in the casing comprises first permanent magnet (2.1) that is arranged in order, first " U " shape iron core (2.2), magnetoresistive bit (2.3) and second " U " shape iron core (2.5), first " U " shape is unshakable in one's determination identical with second " U " shape core construction, first permanent magnet is along the circumference cutting orientation magnetizing, the N utmost point, the S utmost point is alternately arranged, armature tooth is made of first permanent magnet (2.1) and " U " shape limit unshakable in one's determination of being close to the first permanent magnet both sides, auxiliary tooth is made of magnetoresistive bit and " U " shape that is close to magnetoresistive bit both sides limit unshakable in one's determination, threephase armature winding (3) is for concentrating winding, on armature tooth, it is characterized in that casing (4) is a permeability magnetic material, between casing and stator, be equipped with second permanent magnet (2.4), second permanent magnet magnetizes along radial direction, and is identical with the polarity of second permanent magnet on contact-making surface with first permanent magnet of " U " shape contact unshakable in one's determination.
2. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that said rotor (1), first " U " shape iron core (2.2) and second " U " shape iron core (2.5) are to be formed by silicon steel plate packing.
3. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that neodymium iron boron, SmCo or the ferrite of said first permanent magnet (2.1) for magnetizing.
4. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that neodymium iron boron, SmCo or the ferrite of said second permanent magnet (2.4) for magnetizing.
5. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance 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 (2.5) is standard-sized sheet mouth or half opening.
6. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that said magnetoresistive bit (2.3) is plastics, aluminium, not magnetic conduction steel or pottery.
7. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that said casing (4) is for to be rolled into or to be formed by silicon steel plate packing by steel plate.
8. magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance according to claim 1 is characterized in that this motor is electric rotating machine or linear electric motors.
CN200910098785XA 2009-05-14 2009-05-14 Magnetic-field-enhanced permanent-magnetic switching flux linkage motor with high fault tolerance Expired - Fee Related CN101562384B (en)

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CN101562384B true CN101562384B (en) 2011-01-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013087056A2 (en) * 2011-12-16 2013-06-20 Eads Deutschland Gmbh Electric machine, in particular for aircraft

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101789676B (en) * 2010-03-10 2012-06-20 江苏大学 Fault-tolerance permanent magnet linear motor
CN101969261B (en) * 2010-10-22 2012-06-27 哈尔滨工业大学 High-power density permanent magnet motor
CN103490533A (en) * 2013-09-18 2014-01-01 东南大学 Stator split magnetic flow switching type permanent magnetic memory motor
CN105141049B (en) * 2015-10-22 2018-05-08 山东大学 A kind of low cost high powered density permanent magnetic linear electric generator of simplex winding
CN105207435B (en) * 2015-10-22 2018-03-23 山东大学 A kind of low cost high powered density permanent magnetic motor of simplex winding
CN105680585B (en) * 2016-02-05 2018-09-21 东南大学 A kind of Modular motor stator and its end are overlapped fractional-slot winding structure

Non-Patent Citations (1)

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Title
费伟中,沈建新.新型永磁开关磁链电机.《微特电机》.2006, *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013087056A2 (en) * 2011-12-16 2013-06-20 Eads Deutschland Gmbh Electric machine, in particular for aircraft
WO2013087056A3 (en) * 2011-12-16 2014-09-04 Eads Deutschland Gmbh Electric machine, in particular for aircraft

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