CN103746525B - A kind of Stator-module-type hybrid-excitation fault-tolerant motor - Google Patents

A kind of Stator-module-type hybrid-excitation fault-tolerant motor Download PDF

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Publication number
CN103746525B
CN103746525B CN201410003886.5A CN201410003886A CN103746525B CN 103746525 B CN103746525 B CN 103746525B CN 201410003886 A CN201410003886 A CN 201410003886A CN 103746525 B CN103746525 B CN 103746525B
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China
Prior art keywords
stator
rotor
motor
module
stator core
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Expired - Fee Related
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CN201410003886.5A
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Chinese (zh)
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CN103746525A (en
Inventor
林明耀
张蔚
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Southeast University
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Southeast University
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Publication of CN103746525B publication Critical patent/CN103746525B/en
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Abstract

The invention discloses a kind of Stator-module-type hybrid-excitation fault-tolerant motor, including the first stator (1) being oppositely arranged and the second stator (3), the rotor (2) being installed between the first stator (1) and the second stator (3);First stator (1) includes some first stator core module, there is air gap bridge (7) between the first adjacent stator core module, and the first stator core module is arranged on non-magnetic first stator fixed disk (8);Exciting Windings for Transverse Differential Protection (10) is placed in space between adjacent air gap bridge (7) and the first stator fixed disk (8);This first stator core module includes some stator cores (4), is folded with permanent magnet (5), stator core (4) is wound with stator winding (6) between adjacent stator core (4);Second stator (3) is identical with the first stator (1) structure, and is symmetrical arranged about rotor (2).This motor combines the advantage of flux switch motor and fault-tolerant motor, improves the performance of motor.

Description

A kind of Stator-module-type hybrid-excitation fault-tolerant motor
Technical field
The present invention relates to a kind of Stator-module-type hybrid-excitation fault-tolerant motor, be the improvement to traditional fault-tolerant motor, belong to Magneto technical field.
Background technology
Britain professor B.C.Mecrow proposes the concept of fault-tolerant magneto, by the structural models of switching magnetic-resistance (SR) motor with forever Magnetic-synchro motor combines, and belongs to rotor permanent magnet type motor.Change traditional distributed winding of permagnetic synchronous motor into concentratred winding, And only a set of winding in each stator slot.There is no the armature tooth of winding as flux circuit, play buffer action simultaneously yet, real Circuit, magnetic circuit and temperature is relatively independent the most between phase and phase.But, permanent magnet is arranged on rotor, when the motor feels hot, , easily there are the faults such as permanent magnet demagnetization in rotor cooling difficulty;And phase winding when breaking down, motor inevitably occurs Torque ripple, reduces output torque, and its fault freedom has much room for improvement.The Magneticflux-switching type proposed by France scholar E.Hoang Magneto, is placed on permanent magnet on stator, so, the simple in construction of rotor, not only without winding but also without permanent magnet on rotor, Solve the problems referred to above, and have that air gap flux density is higher, back-emf is sinusoidal, electric efficiency advantages of higher, but, there is also tooth Groove torque is relatively big, the shortcoming that fault-tolerance has much room for improvement, and on the other hand, current mixed excited magnetic pass switch permanent magnet motor structure is multiple Miscellaneous, difficulty of processing is big.
Summary of the invention
Technical problem: the problem existed for traditional fault-tolerant motor, flux switch permanent magnet motor, for strengthening motor fault-tolerant performance, Improving torque output capability and speed adjustable range, the present invention proposes a kind of stator mould on the basis of axial magnetic flux switch permanent magnet motor Block formula composite excitation fault-tolerant motor.
Technical scheme: for solving above-mentioned technical problem, the invention provides a kind of Stator-module-type hybrid-excitation fault-tolerant motor, should The rotor that motor includes the first stator being oppositely arranged and the second stator, is installed between the first stator and the second stator;
First stator includes some first stator core module, there is air gap bridge between the first adjacent stator core module, first Stator core module is arranged on non-magnetic first stator fixed disk;Space between adjacent air gap bridge and the first stator fixed disk is put Put Exciting Windings for Transverse Differential Protection;
This first stator core module includes some stator cores, is folded with permanent magnet, stator between adjacent stator core Stator winding it is wound with on iron core;
Second stator and the first stator structure are identical, and are symmetrical arranged about rotor;
Rotor includes the non-magnetic annulus of rotor and the rotor tooth radially extended from rotor non-magnetic annulus outer surface.
Preferably, the first stator and the second stator are salient pole stator, and rotor is field spider.
Preferably, stator core is U-shaped.
Beneficial effect:
Stator-module-type hybrid-excitation fault-tolerant motor proposed by the invention, has concentrated fault-tolerant motor and Magneticflux-switching type magneto Advantage.Power density, efficiency are high, and rotor structure is simple, and not only without permanent magnet but also without winding on it, rotary inertia is the least, carries The high dynamic property of motor;The setting of air gap bridge simultaneously substantially reduces the mutual inductance between permanent magnet flux switching motor armature winding, Normal work can be continued when motor breaks down, improve the fault freedom of motor;The Exciting Windings for Transverse Differential Protection being placed on air gap bridge can be right Motor-field is adjusted, and improves torque capacity and speed adjustable range;The design of stator fixed disk avoids the processing of stator teeth notching Difficulty.
Accompanying drawing explanation
Fig. 1 is the three dimensional structure schematic diagram of composite excitation fault-tolerant motor.
Fig. 2 is dual U-shaped stator core unit and a parallel permanent magnets, is the basic comprising modules of stator structure, Mei Geding Son is all made up of such 6 basic modules.
Above figure has: the first stator 1, rotor the 2, second stator 3, " u "-shaped iron core 4, permanent magnet 5, stator winding 6, air gap bridge 7, non-magnetic first stator fixed disk 8, non-magnetic second stator fixed disk 9, Exciting Windings for Transverse Differential Protection 10, rotor is non-leads Magnetic annulus 11, rotor tooth 12.
Fig. 3 is the inductance oscillogram of 6/10 rotor/stator pole, mixed excitation fault-tolerant motor.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
Seeing Fig. 1 and Fig. 2, the Stator-module-type hybrid-excitation fault-tolerant motor that the present invention provides includes the first stator being oppositely arranged 1 and second stator 3, the rotor 2 that is installed between the first stator 1 and the second stator 3.
First stator 1 includes some first stator core module, there is air gap bridge 7 between the first adjacent stator core module, First stator core module is arranged on non-magnetic first stator fixed disk 8;Adjacent air gap bridge 7 and the first stator fixed disk 8 it Between space place Exciting Windings for Transverse Differential Protection 10.
This first stator core module includes some stator cores 4, is folded with permanent magnet 5 between adjacent stator core 4, Stator winding 6 it is wound with in stator core 4.
Second stator 3 is identical with the first stator 1 structure, and is symmetrical arranged about rotor 2.
Rotor 2 includes the non-magnetic annulus of rotor 11 and the rotor tooth 12 radially extended from rotor non-magnetic annulus 11 outer surface.
First stator 1 and the second stator 2 are salient pole stator, and rotor 2 is field spider.
Stator core 4 is U-shaped.
The present invention ensures under the advantage that permanent magnet flux switching motor power density is high, efficiency is high, it is proposed that Magnetic isolation ability is strong, turn Speed wide ranges, the output high composite excitation fault-tolerant motor of torque.
The design of stator is easily installed and produces in a large number.
The existence of air gap bridge, adds magnetic circuit magnetic conductance, reduces the mutual inductance between motor stator winding adjacent windings.
The setting (such as non-magnetic first stator fixed disk 8) of stator fixed disk, makes between adjacent air gap bridge and stator fixed disk Exciting Windings for Transverse Differential Protection can be placed in space, can be improved output torque by regulation exciting current and be widened speed adjustable range.
Stator-module-type hybrid-excitation fault-tolerant motor is the double air gap permanent magnet motors being made up of two stators and a rotor, and stator is such as Shown in Fig. 1.Each stator is by 12 " u "-shaped iron cores, 5,1 non-magnetic stator fixed disk 8 of 4,6 pieces of permanent magnets Or 9,6 stator winding 6 and 6 Exciting Windings for Transverse Differential Protection 10 form.2 " U " unshakable in one's determination 4 and one piece of permanent magnet 5 form one and determine Submodule, stator modules graphics is as shown in Figure 2.6 stator winding 6 rotating around form on 6 stator modules three-phase around Group, two coils connected in series diametrically constitute a phase winding, and permanent magnet 5 the most alternately magnetizes.Air gap bridge 7 with The Exciting Windings for Transverse Differential Protection 10 placed between non-magnetic stator fixed disk 8 and 9.
Not only there is no permanent magnet but also there is no coil on rotor, rotor has 10 teeth, referred to as 10 rotor poles, rotor tooth 12 Being uniformly arranged on the excircle of the non-magnetic annulus of rotor 11, rotor tooth form is designed as stepped tooth structure, and rotor is also by high permeability Stalloy punching folded constitute.
The inductance waveform of 6/10 rotor/stator pole stator modules formula Magneticflux-switching type fault-tolerant motor as shown in Figure 3.Due to air gap bridge Existence make to achieve physical isolation, Magnetic isolation between mutually mutually, be thermally isolated, reduce mutual inductance, improve fault-tolerance.

Claims (1)

1. a Stator-module-type hybrid-excitation fault-tolerant motor, it is characterised in that this motor includes being oppositely arranged The first stator (1) and the second stator (3), be installed between the first stator (1) and the second stator (3) Rotor (2);
First stator (1) includes some first stator core module, between the first adjacent stator core module There is air gap bridge (7), the first stator core module is arranged on non-magnetic first stator fixed disk (8);Phase Exciting Windings for Transverse Differential Protection (10) is placed in space between adjacent air gap bridge (7) and the first stator fixed disk (8);
This first stator core module includes some stator cores (4), presss from both sides between adjacent stator core (4) It is provided with permanent magnet (5), stator core (4) is wound with stator winding (6);
Second stator (3) is identical with the first stator (1) structure, and is symmetrical arranged about rotor (2);
Rotor (2) includes the non-magnetic annulus of rotor (11) and from rotor non-magnetic annulus (11) appearance face diameter To the rotor tooth (12) extended;
First stator (1) and the second stator (2) are salient pole stator, and rotor (2) is field spider;
Stator core (4) is U-shaped.
CN201410003886.5A 2014-01-03 2014-01-03 A kind of Stator-module-type hybrid-excitation fault-tolerant motor Expired - Fee Related CN103746525B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104779754B (en) * 2015-05-12 2018-02-06 南通大学 Double winding axial magnetic field magnetic flux switches fault-tolerant motor
CN106685118B (en) * 2017-01-23 2019-02-19 北京理工大学 A kind of modular switch magnetic flux disc type electric machine and system
CN108233651B (en) * 2018-02-28 2019-11-05 南通大学 H-shaped iron core composite excitation axial magnetic flux switches hub motor
CN108616203B (en) * 2018-03-28 2020-04-21 南京理工大学 Staggered double-stator mixed excitation type axial magnetic field flux switching motor

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JP5114135B2 (en) * 2006-12-01 2013-01-09 本田技研工業株式会社 Axial gap type motor
CN102223036B (en) * 2011-06-16 2013-12-04 东南大学 Hybrid excitation E-shaped iron core axial magnetic field permanent magnet brushless motor
CN103051148B (en) * 2012-12-13 2014-12-10 东南大学 Modular primary permanent magnetic linear motor and motor module consisting of same
CN103390978B (en) * 2013-07-18 2016-03-16 东南大学 A kind of bimorph transducer disc type mixed excitation electric machine
CN103490575B (en) * 2013-10-17 2016-03-30 东南大学 Multiple tooth mixing exciter panel type wind-driven generator

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