CN105515314B - A kind of composite excitation magnetic linkage birotor compound machine in parallel - Google Patents

A kind of composite excitation magnetic linkage birotor compound machine in parallel Download PDF

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Publication number
CN105515314B
CN105515314B CN201610108920.4A CN201610108920A CN105515314B CN 105515314 B CN105515314 B CN 105515314B CN 201610108920 A CN201610108920 A CN 201610108920A CN 105515314 B CN105515314 B CN 105515314B
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CN
China
Prior art keywords
motor
stator
magnetic
permanent magnet
interior
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CN201610108920.4A
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Chinese (zh)
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CN105515314A (en
Inventor
花为
苏鹏
张淦
程明
王宝安
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东南大学
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Priority to CN201610108920.4A priority Critical patent/CN105515314B/en
Publication of CN105515314A publication Critical patent/CN105515314A/en
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Publication of CN105515314B publication Critical patent/CN105515314B/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K16/00Machines with more than one rotor or stator
    • H02K16/02Machines with one stator and two or more rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/17Stator cores with permanent magnets

Abstract

The invention discloses a kind of composite excitation magnetic linkage birotor compound machine in parallel, including stator core, permanent magnet, interior motor magnetic teeth, outer motor magnetic teeth, interior armature winding, external armature winding, Exciting Windings for Transverse Differential Protection, internal rotor and outer rotor.Interior motor magnetic teeth constitutes " U " type structure with stator iron yoke, and external stator magnetic teeth constitutes T-shape structure with stator iron yoke;Interior armature winding is around the home on the interior motor pole that interior motor magnetic teeth and permanent magnet are collectively formed, and external armature winding and Exciting Windings for Transverse Differential Protection are around the home in outer motor magnetic teeth.The present invention integrated two sets of electric system in motor space, inside and outside motor magnetic path parallel connection, two power paths of composition, can independent control, and realize that permanent magnetic field is adjustable by Exciting Windings for Transverse Differential Protection, loading demand under motor different working condition is met, reliability and the flexibility of system is improved.

Description

A kind of composite excitation magnetic linkage birotor compound machine in parallel
Technical field
The invention belongs to technical field of motor manufacture, and in particular to a kind of composite excitation magnetic linkage birotor compound electric in parallel Machine.
Background technology
The characteristics of traditional stator permanent-magnet type flux switch motor has torque density and high power density, stator is equal with rotor For salient-pole structure, permanent magnet is respectively positioned on stator side with armature winding, and rotor-side is both without armature winding or without permanent magnet, structure letter Single, high mechanical strength is adapted to high-speed cruising, and can run under the conditions of relatively rugged environment.But, traditional stator permanent-magnet type Flux switch motor only has outer rotor or internal rotor only with single rotor structure, and mode of operation is single.
File 201210274466.1 proposes a kind of combined type flux switch motor structure, using double-rotor machine structure, Inside and outside two motors drive inside and outside two rotor operations independently of one another, respectively.The motor has multiple-working mode, effectively carries The high flexibility of system operation, meet modern drive system of electric automobile with industrial drives system to motor operation flexibility Height, the high requirement of reliability.But, compound machine structure is isolated due to two motor stator yoke portions using magnetism-isolating loop, and in order to Inside and outside motor-field coupling is prevented, inevitable requirement stator yoke thickness is larger, so as to add motor volume.
Therefore, the present invention proposes a kind of composite excitation magnetic linkage birotor compound machine structure in parallel, passes through inside and outside motor magnetic Road is in parallel, constitutes two separate power paths, and by adjusting excitation field, realizes the composite excitation operation of motor, So that motor has plurality of operating modes, flexibility and the reliability of motor operation are improved.Motor of the present invention is effectively reduced Motor yoke thickness, realizes that electric automobile and industrial drives system are small to motor volume, compact conformation, and power density is high to be wanted Ask.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes that a kind of composite excitation magnetic linkage of compact conformation birotor in parallel is combined Motor, the motor has higher power density, and the power distribution under composite excitation operating condition can be achieved, with a variety of flexible Mode of operation.
To achieve these goals, the technical solution adopted by the present invention is:
Composite excitation magnetic linkage of the present invention birotor compound machine in parallel, the motor includes interior turn be arranged concentrically from the inside to the outside Air gap is equipped between son, stator and outer rotor, and described two rotors and stator;The outer surface of the internal rotor and outer rotor Inner surface be salient-pole structure, the stator inner surface and outer surface are salient-pole structure;The stator is by some stator iron The heart and permanent magnet are constituted, the embedded permanent magnet between the adjacent stator core, and the permanent magnet magnetizing direction is along stator Circumference is tangential, and the magnetizing direction of the adjacent permanent magnet is opposite;Characterized in that, described stator core includes electricity in two Machine magnetic teeth, stator iron yoke, outer motor magnetic teeth, it is described fixed that two described interior motor magnetic teeths are shared with outer motor magnetic teeth Sub- iron yoke, two interior motor magnetic teeths constitute " u "-shaped construction unit with stator iron yoke, and outer motor magnetic teeth is constituted with stator iron yoke " T " shape structure unit;Around being equipped with the interior motor pole that motor magnetic teeth is collectively formed in the permanent magnet and its both sides Interior armature winding is spaced around being equipped with interior armature winding;Around being equipped with dispatch from foreign news agency armature in outer motor magnetic teeth Winding is spaced around being equipped with dispatch from foreign news agency armature winding;Exciting Windings for Transverse Differential Protection can be wound on the inner or outer side of outer armature winding; Also around being equipped with Exciting Windings for Transverse Differential Protection or interval around being equipped with Exciting Windings for Transverse Differential Protection in outer motor magnetic teeth;Described interior armature around Group, outer armature winding and Exciting Windings for Transverse Differential Protection use concentratred winding.
Further, outer motor permanent magnet, described outer motor permanent magnetism are provided with the outer motor magnetic teeth outer surface Body is along stator outer diameter circumference radial magnetizing, and outer motor permanent magnet magnetizing direction constitutes string with permanent magnet magnetizing direction on magnetic circuit It is coupled structure.
Further, the internal rotor and outer rotor are straight trough or flume structure.
Further, described interior motor magnetic teeth, stator iron yoke, outer motor magnetic teeth, internal rotor and outer rotor are adopted Use silicon steel sheet permeability magnetic material.
Further, the permanent magnet is neodymium iron boron, SmCo, ferrite or alnico magnetic material.
Composite excitation magnetic linkage of the present invention birotor compound machine in parallel, interior motor is by internal rotor, interior motor magnetic teeth, stator Iron yoke and permanent magnet are constituted, and outer motor is made up of outer rotor, outer motor magnetic teeth, stator iron yoke and permanent magnet, interior motor with it is outer Motor forms two non-interfering power paths on magnetic circuit, with from every magnetic energy power.Therefore, two independent electricity can be regarded as Machine, is independently controlled respectively, improves flexibility and the reliability of motor operation.
Compared with prior art, present invention has the advantages that:
1)Composite excitation magnetic linkage of the present invention birotor compound machine in parallel can adjust permanent magnetic field by Exciting Windings for Transverse Differential Protection, solve The problem of permanent magnetic field is unadjustable, realizes motor and exceeds loading capability and wide speed regulating range operation characteristic.
2)Composite excitation magnetic linkage of the present invention birotor compound machine in parallel can be divided into two parts of interior motor and outer motor, interior The permanent magnetic field of motor and outer motor is provided by the poly- magnetic of permanent magnet between the adjacent two " u "-shapeds core unit of interior motor, is effectively carried The high utilization rate of permanent magnet;Interior motor magnetic circuit and outer motor magnetic path parallel connection, form two non-interfering power paths, have From every magnetic energy power;
3)Interior motor and outer motor are two separate electric systems, can be worked respectively in pure permanent magnetism or composite excitation Under pattern, two motors of control are operated in electronic-electronic, electric-generating, generating-electronic, generating-generating state, mode of operation spirit It is living, it is suitably applied in electric automobile;
4)When loss of excitation failure occurs for permanent magnet, excitation field can be provided by electrical excitation winding, maintain motor persistently to transport OK, system operation reliability is improved.
5)Interior motor stator side is provided with permanent magnet, and outer motor stator side only has armature winding without permanent magnet, is effectively improved Competition for space relation between outer motor stator side permanent magnet and armature winding, improves the space availability ratio of motor stator side, Improve the torque density and power density of outer motor;
6)Interior motor can realize electronics stepless time adjustment function with outer motor, and planetary gear, inside and outside motor are replaced in structure Electronic or generating state can be operated according to operating mode, and by electrical connection, eliminates the complex mechanical structures such as gear, effectively carries High efficiency, reduces maintenance cost;
7)Outer motor magnetic teeth surface can mount permanent magnet, with the set of permanent magnets bunchiness of interior motor magnetic conduction between cog on magnetic circuit It is coupled structure, improves the power density of outer motor.
Brief description of the drawings
Fig. 1 be the pole of 12 grooves of motor stator/rotor 10 in the embodiment of the present invention, the outer pole of 12 grooves of motor stator/rotor 22 it is mixed Close excitation flux linkage birotor compound machine structural representation in parallel;
Fig. 2 is that composite excitation of embodiment of the present invention magnetic linkage birotor compound machine Exciting Windings for Transverse Differential Protection in parallel increases magnetic principle figure;
Fig. 3 is composite excitation of embodiment of the present invention magnetic linkage birotor compound machine Exciting Windings for Transverse Differential Protection weak magnetic schematic diagram in parallel.
In figure:Interior motor magnetic teeth 1, stator iron yoke 2, outer motor magnetic teeth 3, permanent magnet 4, interior armature winding 5, outside Armature winding 6, Exciting Windings for Transverse Differential Protection 7, internal rotor 8, outer rotor 9, outer motor permanent magnet 10.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Because under the different numbers of phases, composite excitation magnetic linkage used for electric vehicle birotor compound machine structure in parallel is essentially identical; Below excitation flux linkage is closed so that the three-phase electric of the pole of 12 grooves of stator/rotor 10, the outer pole of 12 grooves of motor stator/rotor 22 is automotive mixed simultaneously Exemplified by connection birotor compound machine.
As shown in figure 1, composite excitation magnetic linkage of the present invention birotor compound machine in parallel, the motor includes concentric from the inside to the outside Air gap is equipped between the internal rotor 8 of setting, stator and outer rotor 9, and described two rotors and stator;The internal rotor 8 The inner surface of outer surface and outer rotor 9 is salient-pole structure, and the stator inner surface and outer surface are salient-pole structure;It is described fixed Son is made up of some stator cores and permanent magnet 4, the embedded permanent magnet 4, the permanent magnet 4 between the adjacent stator core Magnetizing direction is tangential along stator circumference, and the magnetizing direction of the adjacent permanent magnet 4 is opposite;Described stator core includes two Individual interior motor magnetic teeth 1, stator iron yoke 2, outer motor magnetic teeth 3, described two interior motor magnetic teeths 1 and outer motor magnetic teeth 3 share the stator iron yoke 2, and two interior motor magnetic teeths 1 constitute " u "-shaped construction unit, outer motor magnetic teeth with stator iron yoke 2 3 constitute " T " shape structure unit with stator iron yoke 2;In motor magnetic teeth 1 is collectively formed in the permanent magnet 4 and its both sides Around being equipped with interior armature winding 5 on motor pole;Around being equipped with dispatch from foreign news agency armature winding 6 in outer motor magnetic teeth 3; Also it is spaced in outer motor magnetic teeth 3 around being equipped with Exciting Windings for Transverse Differential Protection 7;Exciting Windings for Transverse Differential Protection 7 can be wound on the outside of outer armature winding 6; Described interior armature winding 5, outer armature winding 6 and Exciting Windings for Transverse Differential Protection 7 uses concentratred winding.
The outer outer surface of motor magnetic teeth 3 is provided with outer motor permanent magnet 10, and described outer motor permanent magnet 10 is along calmly Sub- outside diameter hoop radial magnetizing, and the magnetizing direction of outer motor permanent magnet 10 constitutes on magnetic circuit with the magnetizing direction of permanent magnet 4 and connects Structure, increases air gap flux density, improves outer power of motor density.
Each coil in per phase in armature winding 5 differs 90 respectively with its locus central angleo、180o、270o Three coils forward connect, collectively form armature winding 5 in a phase;Each coil per phase in outer armature winding 6 differ 90 respectively with its locus central angleo、180o、270oThree coils forward connect, collectively form the outer motor of a phase Armature winding 6;Each magnet exciting coil is forward connected in Exciting Windings for Transverse Differential Protection 7, collectively forms Exciting Windings for Transverse Differential Protection 7.
Internal rotor of the present invention and outer rotor are salient-pole structure, coaxial rotating, both without permanent magnet or without electricity on two rotors Pivot winding, it is simple in construction, it is adapted to high-speed cruising.
Composite excitation magnetic linkage of the present invention birotor compound machine magnetic path parallel connection in parallel, constitutes two separate power roads Footpath, can be to inside and outside two sets of armature winding independent controls with oneself every magnetic energy power, and inside and outside motor permanent magnetic field is by interior motor magnetic conduction Between cog permanent magnet is provided, and improves permanent magnet utilization rate, and inner stator shares stator iron yoke with external stator, and compact conformation is effectively carried The high power density of motor.
Motor Excitation principle of the present invention is as shown in Figures 2 and 3.When Exciting Windings for Transverse Differential Protection is passed through increasing magnetoelectricity stream, electrical excitation magnetic linkage Identical with permanent magnet flux linkage direction, as shown in Fig. 2 magnetic linkage is superimposed, outer motor magnetic linkage is strengthened;When Exciting Windings for Transverse Differential Protection is passed through weak magnetoelectricity stream When, electrical excitation magnetic linkage is in opposite direction with permanent magnet flux linkage, as shown in figure 3, outer motor magnetic linkage reduces.
Below according to several typical operating conditions, illustrate what composite excitation magnetic linkage birotor compound machine in parallel had Technical advantage:
1)Pure permanent magnet excitation:Inside and outside motor independent control, can export two power paths not coupled mutually, so as to realize Many operation mode of operations such as electronic-electronic, generating-electronic, electric-generating, generating-generating under pure permanent magnet excitation operating mode, make Power of motor distribution has more flexibility, is suitably applied in drive system of electric automobile.
2)Composite excitation:Under the operating mode, outer motor air-gap field is produced jointly by permanent magnet and electrical excitation winding, is solved The problem of outer motor air-gap field is unadjustable, can be directed to different operating modes, adjust excitation field, improve motor overload ability and tune Fast scope.
3)Permanent magnet loss of excitation failure:Under the operating mode, excitation field can be provided by Exciting Windings for Transverse Differential Protection, instead of permanent magnetic field, dimension Motor continuous service is held, the Stability and dependability of system operation is improved.
It the above is only the concrete application example of the present invention, protection scope of the present invention be not limited in any way.Except above-mentioned Implement exception, the present invention there can also be other embodiment.All use equivalent substitutions or the technical scheme of equivalent transformation formation, Fall within scope of the present invention.

Claims (5)

1. a kind of composite excitation magnetic linkage birotor compound machine in parallel, the motor includes the internal rotor being arranged concentrically from the inside to the outside (8), stator and outer rotor(9), and it is equipped with air gap between described two rotors and stator;The internal rotor(8)Outer surface And outer rotor(9)Inner surface be salient-pole structure, the stator inner surface and outer surface are salient-pole structure;The stator by Some stator cores and permanent magnet(4)Constitute, the embedded permanent magnet between the adjacent stator core(4), the permanent magnet (4)Magnetizing direction is, and the adjacent permanent magnet tangential along stator circumference(4)Magnetizing direction it is opposite;Characterized in that, described Stator core include two interior motor magnetic teeths(1), stator iron yoke(2), outer motor magnetic teeth(3), electricity in described two Machine magnetic teeth(1)With outer motor magnetic teeth(3)Share the stator iron yoke(2), two interior motor magnetic teeths(1)With stator iron yoke (2)Constitute " u "-shaped construction unit, outer motor magnetic teeth(3)With stator iron yoke(2)Constitute " T " shape structure unit;In the permanent magnetism Body(4)With motor magnetic teeth in its both sides(1)Around being equipped with interior armature winding on the interior motor pole collectively formed(5)Or Person interval is around being equipped with interior armature winding(5);In outer motor magnetic teeth(3)It is upper around being equipped with dispatch from foreign news agency armature winding(6)Or Person interval is around being equipped with dispatch from foreign news agency armature winding(6);In outer motor magnetic teeth(3)It is upper also around being equipped with Exciting Windings for Transverse Differential Protection(7)Or Every around being equipped with Exciting Windings for Transverse Differential Protection(7);Described interior armature winding(5), outer armature winding(6)And Exciting Windings for Transverse Differential Protection(7) Using concentratred winding.
2. composite excitation magnetic linkage according to claim 1 birotor compound machine in parallel, it is characterised in that in the dispatch from foreign news agency Machine magnetic teeth(3)Outer surface is provided with outer motor permanent magnet(10), described outer motor permanent magnet(10)Along stator outer diameter circumference Radial magnetizing, and outer motor permanent magnet(10)Magnetizing direction and permanent magnet(4)Magnetizing direction constitutes cascaded structure on magnetic circuit.
3. composite excitation magnetic linkage according to claim 1 birotor compound machine in parallel, it is characterised in that the internal rotor (8)With outer rotor(9)For straight trough or flume structure.
4. composite excitation magnetic linkage according to claim 1 birotor compound machine in parallel, it is characterised in that described interior electricity Machine magnetic teeth(1), stator iron yoke(2), outer motor magnetic teeth(3), internal rotor(8)And outer rotor(9)Use silicon steel sheet magnetic conduction Material.
5. composite excitation magnetic linkage according to claim 2 birotor compound machine in parallel, it is characterised in that the permanent magnet (4)With outer motor permanent magnet(10)For neodymium iron boron, SmCo, ferrite or alnico magnetic material.
CN201610108920.4A 2016-02-29 2016-02-29 A kind of composite excitation magnetic linkage birotor compound machine in parallel CN105515314B (en)

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CN201610108920.4A CN105515314B (en) 2016-02-29 2016-02-29 A kind of composite excitation magnetic linkage birotor compound machine in parallel

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CN105515314B true CN105515314B (en) 2017-10-31

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010035375A (en) * 2008-07-30 2010-02-12 Asmo Co Ltd Motor
CN102832771A (en) * 2012-08-03 2012-12-19 东南大学 Combined-type flux switching permanent magnet motor
CN202856573U (en) * 2012-08-03 2013-04-03 东南大学 Multivariant switch magnetic resistance motor
CN104377922A (en) * 2014-11-25 2015-02-25 东南大学 Dual-rotor switched reluctance motor with flux adjustment winding
CN105281514A (en) * 2015-11-09 2016-01-27 江苏大学 Parallel type mixing-magnetic-material-based composite-rotor-contained magnetic flux switching motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010035375A (en) * 2008-07-30 2010-02-12 Asmo Co Ltd Motor
CN102832771A (en) * 2012-08-03 2012-12-19 东南大学 Combined-type flux switching permanent magnet motor
CN202856573U (en) * 2012-08-03 2013-04-03 东南大学 Multivariant switch magnetic resistance motor
CN104377922A (en) * 2014-11-25 2015-02-25 东南大学 Dual-rotor switched reluctance motor with flux adjustment winding
CN105281514A (en) * 2015-11-09 2016-01-27 江苏大学 Parallel type mixing-magnetic-material-based composite-rotor-contained magnetic flux switching motor

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