CN112467950B - Rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor - Google Patents

Rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor Download PDF

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CN112467950B
CN112467950B CN202011307305.9A CN202011307305A CN112467950B CN 112467950 B CN112467950 B CN 112467950B CN 202011307305 A CN202011307305 A CN 202011307305A CN 112467950 B CN112467950 B CN 112467950B
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rotor
stator
permanent magnet
magnetic field
magnet type
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CN112467950A (en
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屠逸翔
林克曼
林明耀
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Southeast University
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Southeast University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/141—Stator cores with salient poles consisting of C-shaped cores
    • H02K1/143—Stator cores with salient poles consisting of C-shaped cores of the horse-shoe type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/12—Transversal flux machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

The invention discloses a rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor which comprises a first rotor, a second rotor, a stator and a permanent magnet, wherein the first rotor, the second rotor and the stator are in a salient pole topological structure; the first rotor and the second rotor comprise rotor teeth and a fixed disc, and the permanent magnets are fixed on the rotor teeth; the stator comprises a magnetism isolating disc, stator cores fixed on two sides of the magnetism isolating disc, an armature winding wound on the stator cores and an excitation winding wound on the stator cores; the motor has short axial length and compact structure, and improves the torque density and the power density of the motor; the permanent magnet is placed on the rotor, the saturation of a stator magnetic circuit is relieved, the stator winding slot space is increased, the harmonic loss and the winding copper loss of the motor are reduced, the constant-power speed regulation range of the motor is widened, and the motor efficiency is improved.

Description

Rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor
Technical Field
The invention belongs to the technology of hybrid excitation motors, and particularly relates to a rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor.
Background
The permanent magnet flux switching motor generally adopts a double salient pole structure, an armature winding and a permanent magnet are both positioned on a stator, and a rotor has no winding or permanent magnet, so that the permanent magnet flux switching motor has the advantages of high power density, high torque density, high efficiency and the like. Because the inherent characteristics of the permanent magnet lead the air gap field of the motor to be constant and difficult to adjust, the speed regulation range of the motor is narrow, and the application of the permanent magnet in the fields of constant voltage power generation and wide range speed regulation driving is limited, thereby realizing the effective adjustment of the air gap field in the permanent magnet flux switching motor and becoming a research hotspot of scholars at home and abroad.
In order to solve the problems, french scholars e.hoang firstly propose a stator permanent magnet type hybrid excitation flux switching motor structure, which adds a set of direct current excitation winding on the basis of the original flux switching motor structure, and realizes effective adjustment of an air gap magnetic field by changing the direction and the magnitude of current led into the excitation winding. Compared with a radial magnetic field motor, the axial magnetic field motor has the advantages of compact structure, small volume, high power density and the like.
In the stator permanent magnet type axial magnetic field flux switching motor, the permanent magnet is positioned in the stator, so that the area of an armature winding slot is seriously extruded, a magnetic circuit of a stator tooth part is seriously saturated, the copper loss of a motor winding and the iron loss of the stator are sharply increased, the torque capacity of the motor in an overload state is weakened, the motor is seriously heated integrally, and the service life and the reliability of the motor are adversely affected.
Disclosure of Invention
The invention aims to provide a rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor, which solves the problems of high loss, poor overload capacity, low heat dissipation efficiency and the like of a stator permanent magnet type hybrid excitation motor in the prior art.
The technical scheme for realizing the purpose of the invention is as follows: a rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor comprises a first rotor, a second rotor and a stator, wherein the first rotor and the second rotor are coaxially arranged, and an air gap is reserved between the stator and the two rotors; permanent magnets are arranged on the first rotor and the second rotor, the first rotor, the second rotor and the stator are in a salient pole topological structure, and the first rotor and the second rotor are respectively positioned on two sides of the stator and are symmetrically arranged relative to the stator;
the first rotor and the second rotor comprise rotor teeth and a fixed disc, and the permanent magnets are fixed on the rotor teeth;
the stator comprises a magnetism isolating disc, stator cores fixed on two sides of the magnetism isolating disc, an armature winding wound on the stator cores and an excitation winding wound on the stator cores;
the stator core, the armature winding and the excitation winding are arranged on two sides of the magnetic isolation disc.
Furthermore, the number of the rotor teeth on the first rotor and the second rotor is n, and the number of the stator cores on the stator is 12n, wherein k and n are positive integers.
Further, the rotor teeth comprise a first rotor pole and a second rotor pole, and the cross-sectional area of the first rotor pole is the same as that of the second rotor pole.
Further, the permanent magnet is arranged between the first rotor pole and the second rotor pole, and the radial length and the axial length of the permanent magnet are the same as those of the first rotor pole and the second rotor pole;
the permanent magnets are magnetized tangentially by adopting parallel permanent magnets, and the magnetizing directions of the adjacent permanent magnets are opposite.
Furthermore, the plurality of stator cores positioned on the same side of the magnetism isolating disc are uniformly arranged to form a circular ring shape;
stator cores on two sides of the magnetism isolating disc are symmetrically arranged.
Furthermore, the stator core is made of silicon steel materials in a laminated mode.
Furthermore, the first rotor pole and the second rotor pole are made of silicon steel materials in a laminated mode, and the permanent magnet is made of neodymium iron boron permanent magnets.
Further, the stator core comprises two end stator teeth, a middle stator tooth and a stator yoke, and parallel stator slots are arranged between the middle stator tooth and the two end stator teeth.
Further, the armature windings are wound on the stator teeth at the two end parts of the two adjacent stator cores.
Furthermore, the excitation winding is wound at the root position of the middle stator tooth of the stator core.
Compared with the prior art, the rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor has the following advantages:
1. the permanent magnet is arranged on the rotor, so that the torque density and the power density are improved, the torque capacity of the motor in an overload state is enhanced, and the cogging torque of the motor is reduced;
2. the stator core adopts an E-shaped core structure with three stator teeth, the armature winding is wound on the stator teeth at two end parts in a crossing manner, and the excitation winding is wound on the middle stator teeth, so that the excitation winding and the armature winding are connected in parallel in a magnetic circuit, the working point stability of the permanent magnet is improved, and the problems of demagnetization of the permanent magnet and short circuit of permanent magnet flux are effectively avoided.
3. The double-air-gap symmetrical structure consisting of the double rotors and the single stator can balance the axial magnetic pull force at two sides
4. The magnetic isolation disc is adopted to divide the stator into two parts, so that the decoupling of the magnetic circuits of the two stators is realized, the saturation degree of the magnetic circuits is reduced, and the fault-tolerant operation capability of the motor is also improved.
The invention is further described below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor.
Fig. 2 is a structural schematic diagram of a rotor of the rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor.
Fig. 3 is a schematic structural diagram of a stator core of the rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor.
FIG. 4 shows that the rotor angle of the rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor is alpha1Time permanent magnetic flux path diagram.
FIG. 5 shows that the rotor angle of the rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor is alpha2Time permanent magnetic flux path diagram.
Fig. 6 is a magnetizing operation schematic diagram of the rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor of the invention.
Fig. 7 is a field weakening operation schematic diagram of the rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor of the invention.
In the figure, 1, a first rotor, 2, a second rotor, 3, a stator, 4, a permanent magnet, 5, a rotor tooth, 5-1, a first rotor pole, 5-2, a second rotor pole, 6, a fixed disc, 7, a stator iron core, 7-1, an end stator tooth, 7-2, a middle stator tooth, 7-3, a stator yoke, 7-4, a stator slot, 8, a magnetic isolation disc and 9, an armature are wound around a rotorGroup, 10. field winding, 11. rotor angle alpha1Permanent magnet flux path, 12. rotor angle alpha2The permanent magnet flux path comprises a time permanent magnet flux path, 13, 14, an excitation flux path, 15 and 16, wherein the permanent magnet flux path is used during the magnetizing operation of the motor, the excitation flux path is used during the magnetizing operation of the motor, and the permanent magnet flux path is used during the weakening operation of the motor.
Detailed Description
With reference to fig. 1, a rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor comprises a first rotor 1, a second rotor 2, a stator 3 and a permanent magnet 4, wherein the first rotor 1, the second rotor 2 and the stator 3 are coaxially mounted, and an air gap is reserved between the stator and the rotors, and the first rotor 1, the second rotor 2 and the stator 3 are all salient pole topological structures; the first rotor 1 and the second rotor 2 are respectively positioned at two sides of the stator 3 and are symmetrically arranged relative to the stator 3, and each rotor comprises rotor teeth 5 and a fixed disc 6; the rotor teeth 5 are fixed on the fixed disc 6; the stator 3 comprises a magnetic isolation disc 8, a stator core 7 fixed on two sides of the magnetic isolation disc 8, an armature winding 9 wound on the stator core 7 and an excitation winding 10 wound on the stator core 7;
the stator core 7, the armature winding 9, and the field winding 10 are provided in plurality on both sides of the magnetic shield disk 8.
The number of the rotor teeth 5 on the first rotor 1 and the second rotor 2 is (12 +/-k) n, the number of the stator cores 7 on the stator 3 is 12n, and n and k are positive integers. The stator cores 7 are symmetrically arranged on two sides of the magnetic isolation disc 8 and are uniformly arranged into a ring shape. The rotor teeth 5 and the stator iron core 7 are both made of silicon steel through laminating.
Referring to fig. 2, the rotor teeth 5 have a symmetrical structure and are formed by a first rotor pole 5-1 and a second rotor pole 5-2, and the cross-sectional areas of the first rotor pole 5-1 and the second rotor pole 5-2 are the same. The permanent magnet 4 is fixed between the first rotor pole 5-1 and the second rotor pole 5-2, and the radial length and the axial length of the permanent magnet 4 are the same as those of the first rotor pole 5-1 and the second rotor pole 5-2; the permanent magnets 4 are magnetized tangentially by adopting parallel permanent magnets, and the magnetizing directions of the adjacent permanent magnets 4 are opposite, so that the finally generated permanent magnetic field is an axial magnetic field.
Specifically, the rotor teeth 5 are evenly arranged on the fixed disk 6 around the axis of the fixed disk 6.
Referring to fig. 3, the stator core 7 includes two end stator teeth 7-1, a middle stator tooth 7-2 and a stator yoke 7-3, the stator core 7 is of a symmetrical structure, the middle stator tooth 7-2 is located between the two end stator teeth 7-1, the two end stator teeth 7-1 and the middle stator tooth 7-2 are both fixed on the stator yoke 7-3, and parallel stator slots 7-4 are arranged between the middle stator tooth 7-2 and the two end stator teeth 7-1.
The armature winding 9 is wound on the stator teeth 7-1 at the two end parts of the two adjacent stator cores 7, and the excitation winding 10 is wound at the root position of the middle stator teeth 7-2 of the stator cores 7, namely at the position of the stator cores 7 close to the stator yoke part 7-3.
The working operation principle of the motor is as follows: the A1 winding is an armature winding 9 and an excitation winding 10 on one side of the magnetic-isolating disc 8, and the A2 winding is the armature winding 9 and the excitation winding 10 on the other side of the magnetic-isolating disc 8; when the exciting current introduced into the exciting winding 10 is zero, the air-gap magnetic field is provided by the permanent magnet 4 only, and when the first rotor 1 and the second rotor 2 run to alpha1At an angle, the rotor angle is alpha1The permanent magnetic flux path 11 is shown in fig. 4, taking phase a as an example, according to the "reluctance minimum principle", the permanent magnetic flux penetrates into windings a1, a2 in the direction of the arrow; when the first rotor 1 and the second rotor 2 run to alpha2At an angle, the rotor angle is alpha2The permanent magnetic flux path is shown in fig. 5, with the flux exiting the a1, a2 windings in the direction of the arrow. The permanent magnetic fluxes of the A1 and A2 winding coils at the two positions have the same value and opposite polarity, and when the first rotor 1 and the second rotor 2 rotate continuously, the permanent magnetic fluxes of the A1 and A2 winding coils change periodically between positive and negative amplitudes, and correspondingly generate induced electromotive force with the amplitudes and phases changing alternately.
When the exciting current is introduced into the exciting winding 10 as positive, as shown in fig. 6, the solid line is the permanent magnetic flux path 13 during the magnetizing operation of the motor, the dotted line is the exciting magnetic flux path 14 during the magnetizing operation of the motor, the two magnetic fluxes have the same direction and are combined to form a magnetic flux enhanced air gap magnetic field, and the motor operates in the magnetizing mode; changing the direction of the exciting current at the same rotor position, that is, changing the exciting current introduced into the exciting winding 10 to be negative, as shown in fig. 7, the solid line is a permanent magnetic flux path 15 when the motor operates at weak magnetism, and the dotted line is an exciting magnetic flux path 16 when the motor operates at weak magnetism; the direction of the excitation magnetic flux is opposite to that of the permanent magnet magnetic flux, the excitation magnetic flux and the permanent magnet magnetic flux are combined to weaken an air gap magnetic field, and the motor operates in a field weakening mode. The excitation magnetic potential and the permanent magnetic potential are in parallel connection on a magnetic circuit, and the magnetic flux generated by the excitation winding 10 does not pass through the permanent magnet, so that the problem of demagnetization of the permanent magnet does not exist. By adjusting the direction and the magnitude of the exciting current, the electric exciting magnetic flux can be changed, the adjustment of the magnitude of the armature winding 9 flux linkage is realized, and the motor can operate in a wide constant-power speed adjusting range.
The above is the preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (9)

1. A rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor is characterized in that: the rotor comprises a first rotor (1), a second rotor (2) and a stator (3), wherein the first rotor and the second rotor are coaxially arranged, and the stator is positioned between the two rotors and provided with an air gap; permanent magnets (4) are arranged on the first rotor (1) and the second rotor (2), the first rotor (1), the second rotor (2) and the stator (3) are of a salient pole topological structure, and the first rotor (1) and the second rotor (2) are respectively positioned on two sides of the stator (3) and are symmetrically arranged relative to the stator (3);
the first rotor (1) and the second rotor (2) both comprise rotor teeth (5) and a fixed disc (6), and the permanent magnets (4) are fixed on the rotor teeth (5);
the stator (3) comprises a magnetic isolation disc (8), stator cores (7) fixed on two sides of the magnetic isolation disc (8), an armature winding (9) wound on the stator cores (7) and an excitation winding (10) wound on the stator cores (7);
a plurality of stator cores (7), armature windings (9) and excitation windings (10) are arranged on two sides of the magnetism isolating disc (8);
the number of the rotor teeth (5) on the first rotor (1) and the second rotor (2) is 12n +/-kn, the number of the stator cores (7) on the stator (3) is 12n, and k and n are positive integers.
2. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 1, characterized in that: the rotor teeth (5) comprise a first rotor pole (5-1) and a second rotor pole (5-2), and the cross-sectional areas of the first rotor pole (5-1) and the second rotor pole (5-2) are the same.
3. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 2, characterized in that: the permanent magnet (4) is arranged between the first rotor pole (5-1) and the second rotor pole (5-2), and the radial length and the axial length of the permanent magnet (4) are the same as those of the first rotor pole (5-1) and the second rotor pole (5-2);
the permanent magnets (4) are magnetized in the tangential direction by adopting parallel permanent magnets, and the magnetizing directions of the adjacent permanent magnets (4) are opposite.
4. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 1, characterized in that: the stator cores (7) positioned on the same side of the magnetic isolation disc (8) are uniformly arranged to form a circular ring shape;
the stator cores (7) on the two sides of the magnetic isolation disc (8) are symmetrically arranged.
5. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 1, characterized in that: the stator core (7) is made of silicon steel materials in a laminated mode.
6. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 3, characterized in that: the first rotor pole (5-1) and the second rotor pole (5-2) are made of silicon steel materials in a laminated mode, and the permanent magnet (4) is made of neodymium iron boron permanent magnets.
7. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 1, characterized in that: the stator core (7) comprises two end stator teeth (7-1), a middle stator tooth (7-2) and a stator yoke (7-3), and parallel stator slots (7-4) are arranged between the middle stator tooth (7-2) and the two end stator teeth (7-1).
8. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 7, characterized in that: the armature windings (9) are wound on the stator teeth (7-1) at the two end parts of the two adjacent stator cores (7).
9. The rotor permanent magnet type double-rotor axial magnetic field hybrid excitation flux switching motor according to claim 7, characterized in that: the excitation winding (10) is wound at the root position of the middle stator tooth (7-2) of the stator core (7).
CN202011307305.9A 2020-11-19 2020-11-19 Rotor permanent magnet type dual-rotor axial magnetic field hybrid excitation flux switching motor Active CN112467950B (en)

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CN113270985B (en) * 2021-05-24 2022-06-28 东南大学 Modularized axial magnetic field permanent magnet motor
CN113364176B (en) * 2021-05-31 2022-09-27 西安理工大学 Six-phase axial flux permanent magnet motor for pumped storage
CN113904472A (en) * 2021-09-14 2022-01-07 华中科技大学 Rotor permanent magnet double-salient-pole motor
CN113949244B (en) * 2021-09-30 2023-03-14 南京航空航天大学 Single-tooth concentrated winding few-harmonic axial flux motor
CN113991957B (en) * 2021-11-17 2022-12-06 长沙理工大学 Single-phase double-magnetic-circuit permanent magnet motor and driving method
CN114744843B (en) * 2022-03-14 2024-07-02 东南大学 Axial-radial hybrid magnetic field reverse permanent magnet flux switching motor

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US8847464B2 (en) * 2008-06-12 2014-09-30 General Electric Company Electrical machine with improved stator flux pattern across a rotor that permits higher torque density
JP5576246B2 (en) * 2010-01-06 2014-08-20 株式会社神戸製鋼所 Axial gap type brushless motor
JP5578979B2 (en) * 2010-07-30 2014-08-27 ダイハツ工業株式会社 Axial gap motor
CN107769502B (en) * 2017-11-23 2020-02-14 西安理工大学 Rotor permanent magnet type hybrid excitation axial flux switching permanent magnet motor
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