CN113437847A - Double-stator double-rotor axial magnetic flux hybrid excitation motor - Google Patents

Double-stator double-rotor axial magnetic flux hybrid excitation motor Download PDF

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Publication number
CN113437847A
CN113437847A CN202110778575.6A CN202110778575A CN113437847A CN 113437847 A CN113437847 A CN 113437847A CN 202110778575 A CN202110778575 A CN 202110778575A CN 113437847 A CN113437847 A CN 113437847A
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stator
rotor
poles
magnetic
permanent magnets
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CN202110778575.6A
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Chinese (zh)
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彭兵
郭振兴
闫伟
庄小雨
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Shenyang University of Technology
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Shenyang University of Technology
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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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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

Abstract

The invention discloses a double-stator double-rotor axial magnetic flux hybrid excitation motor which comprises two stators, two rotors, a direct current excitation unit, a magnetic conduction ring, a magnetic conduction cover and the like, wherein the direct current excitation unit is clamped between the two stators, the magnetic conduction ring is tightly attached to the two stators, the magnetic conduction cover is tightly attached to a rotor yoke, and the two rotors are respectively arranged on two sides of the two stators. The direct-current excitation magnetic flux generated by the direct-current excitation unit returns to the magnetic conduction ring for closing through the magnetic conduction ring, the first stator, the first soft magnetic pole, the first rotor yoke, the first magnetic conduction cover, the second rotor yoke, the second soft magnetic pole, the second air gap, the second stator, and the direct-current excitation magnetic flux only passes through the two air gaps. The size of the air gap magnetic field and the size of the back electromotive force of the motor are adjusted by changing the direction and the size of the direct current excitation magnetic flux, and the motor has the advantages of wider speed regulation range and back electromotive force regulation capacity, high power density and low demagnetization risk of the permanent magnet.

Description

Double-stator double-rotor axial magnetic flux hybrid excitation motor
Technical Field
The invention relates to the technical field of motors, in particular to a double-stator double-rotor axial magnetic flux hybrid excitation motor.
Background
The axial flux permanent magnet motor is widely applied to some special application fields such as a starting generator for an aviation power supply and a driving motor for an electric automobile due to the advantages of flat structure, high power density, light weight and the like. In these applications, either the output voltage of the motor is required to be stable or the motor is required to be able to operate over a wide speed range, which solves both of the above problems if the back emf of the motor can be adjusted. However, the axial flux permanent magnet motor generally adopts a surface-mounted permanent magnet structure, and the rotor surface-mounted permanent magnet structure motor has a weak capability of changing back electromotive force by adjusting an air gap field of the motor through frequency conversion control, so that the application range of the axial flux permanent magnet motor is limited.
In order to adjust the air gap field of the motor and change the magnitude of the back electromotive force of the motor, a patent (application number CN202021283495.0) proposes a brushless excitation mixed disk type motor, the motor is provided with two stators and two rotors, one rotor adopts permanent magnet excitation, the other rotor adopts electric excitation, the electric excitation is generated and rectified by an AC excitation generator and then supplies power to the AC excitation generator, the motor has strong demagnetization capacity, however, the axial length of the motor is long, the special advantage of the light and thin structure of the axial flux motor is lost, and the motor also comprises an AC excitation generator and a rectifying device, and the structure is complex. The patent (application number CN201910683071.9) proposes an axial magnetic flux concentrated winding type hybrid excitation motor, which consists of a stator and two rotors, wherein the magnetic poles of the rotors consist of permanent magnets and magnetic conduction pole blocks, and an electric excitation winding and a magnetic conduction ring are sequentially arranged on the outer ring (or the inner ring) of a stator core.
Therefore, a novel axial flux motor with strong air gap magnetic field adjusting capacity, compact structure and high power density is required to be designed to meet the application requirements of the motor in the fields of power generation and electric automobile driving.
Disclosure of Invention
The purpose of the invention is as follows:
the invention aims to provide an axial magnetic flux hybrid excitation motor which is strong in air gap magnetic field adjusting capacity, wide in back electromotive force adjusting range and high in power density.
The technical scheme is as follows:
a double-stator double-rotor axial magnetic flux hybrid excitation motor comprises stators 1, rotors 2 and a bracket 3, wherein the number of the stators 1 is two, the stators are respectively a first stator 1A and a second stator 1B, and the number of the rotors 2 is two, and the rotors are respectively a first rotor 2A and a second rotor 2B; the two rotors 2 are respectively arranged at two sides of the two stators 1 along the axial direction M, air gaps 8 are respectively arranged between the stators 1 and the rotors 2 and respectively comprise a first air gap 8A and a second air gap 8B, and the two stators 1 are in rotating fit with the two rotors 2;
the rotor 2 comprises a soft magnetic pole 201, a rotor yoke 203, a main permanent magnet 204 and a rotor tray 206;
the motor also comprises a direct current excitation unit 4, a magnetic conduction ring 5 and two magnetic conduction covers 6, wherein the two magnetic conduction covers 6 are respectively a first magnetic conduction cover 6A and a second magnetic conduction cover 6B;
the two stators 1 are arranged on the bracket 3 back to back along the direction of the axial direction M, the magnetic conduction ring 5 is positioned between the two stators 1, and the magnetic conduction ring 5 is tightly attached to the two stators 1 without air gaps;
the direct current excitation unit 4 is clamped between the two stators 1, and the direct current excitation unit 4 is arranged on the outer circle side of the magnetic conduction ring 5;
after the motor is assembled, the two magnetic conduction covers 6 are sleeved on the outer circle sides of the two stators 1; the two magnetic conduction covers 6 are tightly attached in the axial direction M without a gap, the inner circle of each magnetic conduction cover 6 is tightly attached to the outer circle of the rotor yoke 203 without a gap, the two rotors 2 are connected together through the magnetic conduction covers 6, and no relative motion exists between the two rotors 2;
the direct-current excitation magnetic flux 7 generated by the direct-current excitation unit 4 returns to the magnetic conduction ring 5 through the magnetic conduction ring 5, the first stator 1A, the first air gap 8A, the first soft magnetic pole 201A on the first rotor 2A, the first rotor yoke 203A on the first rotor 2A, the first magnetic conduction cover 6A, the second magnetic conduction cover 6B, the second rotor yoke 203B on the second rotor 2B, the second soft magnetic pole 201B on the second rotor 2B, the second air gap 8B, the second stator 1B and is closed, and the direct-current excitation magnetic flux 7 only passes through the two air gaps 8.
The stator 1 comprises stator teeth 101, a stator yoke 102, a multi-phase alternating current coil 103 and a fixing hole 104; the multiphase alternating current coils 103 are wound on the stator teeth 101, and the same-phase multiphase alternating current coils 103 belonging to different stators 1 are connected in series or in parallel; the bracket 3 is provided with a fixing claw 301, the fixing hole 104 and the fixing claw 301 are arranged along the radial direction, and the fixing claw 301 penetrates through the fixing hole 104 to fix the stator 1 on the bracket 3.
The rotor 2 further comprises auxiliary permanent magnets 202 and magnetism isolating bodies 205; the auxiliary permanent magnet 202 is placed on the inner side of the soft magnetic pole 201 in the direction of the radial midline b; a magnetic isolating body 205 is arranged between the auxiliary permanent magnet 202 and the soft magnetic pole 201; the soft magnetic pole 201, the auxiliary permanent magnet 202, the main permanent magnet 204 and the isolation magnet 205 are attached to the surface of the rotor yoke 203 together; the rotor yoke 203 is fixedly connected with the rotor tray 206; wherein the second rotor tray 206B on the second rotor 2B is fixedly connected with the rotating shaft 9; the rotor tray 206 does not move relative to the rotating shaft 9; the rotating shaft 9 penetrates through the bracket 3, and the rotating shaft 9 can rotate relative to the bracket 3; the rotor yoke 203 and the soft magnetic pole 201 are made of magnetic conductive materials; rotor tray 206 is a non-magnetic material; the magnetism isolating body 205 is a non-magnetic conductive material or a magnetism isolating slit.
The arrangement mode of the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 is one of the following modes: the first method is as follows: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are S poles or N poles, the polarities of the first auxiliary permanent magnets 202A facing away from the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite to each other along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second auxiliary permanent magnets 202B are opposite to each other along the axial M direction;
the second method comprises the following steps: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are N poles or S poles, the polarities of the first auxiliary permanent magnets 202A facing away from the first stator 1A are S poles or N poles, the polarities of the second main permanent magnets 204B facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second auxiliary permanent magnets 202B are opposite to each other along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second main permanent magnets 204B are opposite to each other along the axial M direction;
the third method comprises the following steps: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating mode, the polarities of the first main permanent magnets 204A opposite to the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B opposite to the stator 1 are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second soft magnetic poles 201B are opposite along the axial direction M;
the method is as follows: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are both N poles or S poles, the polarities of the second main permanent magnets 204B facing towards the stator 1 are both N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second soft magnetic poles 201B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second main permanent magnets 204B are opposite along the axial direction M.
The direct current excitation unit 4 comprises a framework 401 and an excitation coil 402; the framework 401 is in a ring shape, a U-shaped groove 4011 is formed in the framework 401, and the framework 401 is made of a non-magnetic conductive insulating material; the excitation coil 402 is formed by winding enameled wires, and the excitation coil 402 is embedded in the U-shaped groove 4011.
The magnetic conducting cover 6 comprises magnetic conducting teeth 601 and a magnetic isolating groove 602; the magnetic conduction cover 6 is made of magnetic conduction material.
The installation mode of the magnetic conduction cover 6 is as follows: the central axis a of each magnetic conduction tooth 601 is radially overlapped with the central axis b of the soft magnetic pole 201 and is not axially overlapped; the central axis c of each magnetic isolation groove 602 is radially coincident with the central axis d of the main permanent magnet 204, but not axially coincident therewith.
The direct current excitation magnetic flux 7 generated by the direct current I introduced into the excitation coil 302 of the direct current excitation unit 4 can enhance the magnetic induction intensity in the air gap 5, and the magnetic induction intensity in the air gap 5 can also be weakened by changing the direction of the current I in the excitation coil 402.
The advantages and effects are as follows:
compared with the prior art, the invention has the following technical effects:
(1) the double-stator double-rotor axial magnetic flux hybrid excitation motor provided by the invention is simple in structure, convenient to install and convenient to process.
(2) The double-stator double-rotor axial magnetic flux hybrid excitation motor provided by the invention has obvious magnetizing and demagnetizing capabilities, and the direct current excitation magnetic circuit does not pass through the permanent magnet, so that the risk of demagnetization of the permanent magnet is avoided, and the running reliability of the motor is improved.
(3) The double-stator double-rotor axial magnetic flux hybrid excitation motor provided by the invention can conveniently change the amplitude of an air gap magnetic field and increase the speed regulation range of the motor by changing the magnitude and the direction of the current of the direct current excitation unit.
(4) According to the double-stator double-rotor axial magnetic flux hybrid excitation motor, the direct current excitation unit is clamped between the two stators, the structure is compact, and the power density is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below.
FIG. 1 is a schematic cross-sectional view of a dual-stator dual-rotor axial flux hybrid excitation motor according to the present invention;
FIG. 2 is an exploded view of a dual-stator dual-rotor axial flux hybrid excitation motor structure according to the present invention;
FIG. 3 is a DC excitation flux diagram of a dual-stator dual-rotor axial flux hybrid excitation motor according to the present invention;
FIG. 4 is a diagram of a stator assembly of a dual-stator dual-rotor axial flux hybrid excitation motor according to the present invention;
FIG. 5 is an assembly view of a double-stator double-rotor axial flux hybrid excitation motor magnetic conductive ring of the present invention;
FIG. 6 is a diagram of a double-stator double-rotor axial magnetic flux hybrid excitation motor rotor assembly according to the present invention;
FIG. 7 is a schematic diagram of the arrangement of permanent magnets of a double-stator double-rotor axial flux hybrid excitation motor according to the present invention;
FIG. 8 is a diagram of a DC excitation unit of a dual-stator dual-rotor axial flux hybrid excitation motor according to the present invention;
FIG. 9 is a schematic view of a double-stator double-rotor axial flux hybrid excitation motor flux guide cover according to the present invention;
FIG. 10 is an assembly view of a double-stator double-rotor axial flux hybrid excitation motor flux guide cover according to the present invention;
fig. 11 is a main flux path diagram of a double-stator double-rotor axial flux hybrid excitation motor of the invention.
Wherein: 1-stator, 1A-first stator, 1B-second stator, 101-stator teeth, 101A-first stator teeth, 101B-second stator teeth, 102-stator yoke, 102A-first stator yoke, 102B-second stator yoke, 103-ac winding, 104-stationary hole, 2-rotor, 201-soft magnetic pole, 201A-first soft magnetic pole, 201B-second soft magnetic pole, 202-auxiliary permanent magnet, 202A-first auxiliary permanent magnet, 202B-second auxiliary permanent magnet, 203-rotor yoke, 203A-first rotor yoke, 203B-second rotor yoke, 204-main permanent magnet, 204A-first main permanent magnet, 204B-second main permanent magnet, 205-isolation magnet, 206-rotor tray, and the like, 206A-first rotor tray, 206B-second rotor tray, 3-bracket, 301-fixed claw, 302-bracket main body, 3021-axial hole, 3022-boss, 4-DC excitation unit, 401-skeleton, 4011-U-shaped groove, 402-excitation coil, 5-magnetic conductive ring, 6-magnetic conductive cover, 6A-first magnetic conductive cover, 6B-second magnetic conductive cover, 601-magnetic conductive tooth, 602-magnetic isolation groove, 7-DC excitation flux, 8-air gap, 8A-first air gap, 8B-second air gap, 9-rotating shaft, 10-bearing, 11-main flux, 11A-first stator main flux, 11B-second stator main flux.
Detailed Description
A double-stator double-rotor axial magnetic flux hybrid excitation motor comprises stators 1, rotors 2 and a bracket 3, wherein the number of the stators 1 is two, the stators are respectively a first stator 1A and a second stator 1B, and the number of the rotors 2 is two, and the rotors are respectively a first rotor 2A and a second rotor 2B; the two rotors 2 are respectively arranged at two sides of the two stators 1 along the axial direction M, air gaps 8 are respectively arranged between the stators 1 and the rotors 2 and respectively comprise a first air gap 8A and a second air gap 8B, and the two stators 1 are in rotating fit with the two rotors 2;
the rotor 2 comprises a soft magnetic pole 201, a rotor yoke 203, a main permanent magnet 204 and a rotor tray 206;
the motor also comprises a direct current excitation unit 4, a magnetic conduction ring 5 and two magnetic conduction covers 6, wherein the two magnetic conduction covers 6 are respectively a first magnetic conduction cover 6A and a second magnetic conduction cover 6B;
the two stators 1 are arranged on the bracket 3 back to back along the direction of the axial direction M, the magnetic conduction ring 5 is positioned between the two stators 1, and the magnetic conduction ring 5 is tightly attached to the two stators 1 without air gaps;
the direct current excitation unit 4 is clamped between the two stators 1, and the direct current excitation unit 4 is arranged on the outer circle side of the magnetic conduction ring 5;
after the motor is assembled, the two magnetic conduction covers 6 are sleeved on the outer circle sides of the two stators 1; the two magnetic conduction covers 6 are tightly attached without gaps in the axial direction M (as shown in fig. 1, that is, the two magnetic conduction covers 6 are buckled together from the left side and the right side to cover the two stators 1), the inner circle of the magnetic conduction cover 6 is tightly attached with the outer circle of the rotor yoke 203 without gaps, the two rotors 2 are connected together by the magnetic conduction covers 6, and no relative motion exists between the two rotors 2;
the dc excitation flux 7 generated by the dc excitation unit 4 passes through the magnetic conductive ring 5, the first stator 1A, the first air gap 8A, the first soft magnetic pole 201A on the first rotor 2A (the soft magnetic pole on the first rotor 2A is the first soft magnetic pole 201A), the first rotor yoke 203A on the first rotor 2A (the rotor yoke on the first rotor 2A is the first rotor yoke 203A), the first magnetic conductive cover 6A, the second magnetic conductive cover 6B, the second rotor yoke 203B on the second rotor 2B (the rotor yoke on the second rotor 2B is the second rotor yoke 203B), the second soft magnetic pole 201B on the second rotor 2B (the soft magnetic pole on the second rotor 2B is the second soft magnetic pole 201B), the second air gap 8B, the second stator 1B, and the magnetic conductive ring 5, and is closed, and the dc excitation flux 7 only passes through the two air gaps 8.
The stator 1 comprises stator teeth 101, a stator yoke 102, a multi-phase alternating current coil 103 and a fixing hole 104; the multiphase alternating current coils 103 are wound on the stator teeth 101, and the same-phase multiphase alternating current coils 103 belonging to different stators 1 are connected in series or in parallel (the same-phase multiphase alternating current coils 103 belonging to two stators 1 are connected in series or in parallel); the bracket 3 is provided with a fixed claw 301, the fixed hole 104 and the fixed claw 301 are arranged along the radial direction, the fixed claw 301 passes through the fixed hole 104 to fix the stator 1 on the bracket 3 (when in installation, after the stator 1 is installed, the fixed claw 301 is inserted into the fixed hole 104 in the stator 1, the fixed claw 301 is inserted into the bracket main body 302, then the fixed claw 301 is fixed with the bracket main body 302 by a screw ((i.e. a boss 3022 with a diameter larger than that of the bracket main body 302 is arranged in the bracket main body 302, holes are arranged on the boss 3022 along the radial direction and the axial direction, respectively an axial hole 3021 and a radial hole, the axial hole 3021 and the radial hole are communicated, the radial hole is used for containing the fixed claw 301 (i.e. the position for inserting the fixed claw 301 and is inserted by the fixed claw 301 in figure 5), the axial hole 3021 is used for placing a screw, the fixed claw 301 and the bracket main body 302 are fixedly connected together by the screw, see fig. 5)).
The rotor 2 may further include auxiliary permanent magnets 202 and a magnetism insulator 205; the auxiliary permanent magnet 202 is placed on the inner side of the soft magnetic pole 201 in the direction of the radial midline b; a magnetic isolating body 205 is arranged between the auxiliary permanent magnet 202 and the soft magnetic pole 201; the soft magnetic pole 201, the auxiliary permanent magnet 202, the main permanent magnet 204 and the isolation magnet 205 are attached to the surface of the rotor yoke 203 together; the rotor yoke 203 is fixedly connected with the rotor tray 206 through bolts or rivets; a second rotor tray 206B on the second rotor 2B (the rotor tray on the second rotor 2B is the second rotor tray 206B, and similarly, the rotor tray on the first rotor 2A is the first rotor tray 206A) is fixedly connected with the rotating shaft 9 through bolts or rivets; the rotor trays 206 have no relative movement with the rotating shaft 9 (both rotor trays have no relative movement with the rotating shaft 9); the rotating shaft 9 penetrates through the bracket 3, and the rotating shaft 9 can rotate relative to the bracket 3; the rotor yoke 203 and the soft magnetic pole 201 are made of magnetic conductive materials; rotor tray 206 is a non-magnetic material; the magnetism isolating body 205 is a non-magnetic conductive material or a magnetism isolating slit (when the magnetism isolating body is a magnetism isolating slit, it is equivalent to magnetic isolation by air).
The arrangement mode of the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 is one of the following modes: the first method is as follows: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A (the main permanent magnets on the first rotor are the first main permanent magnets 204A) facing away from the first stator 1A are S poles or N poles, the polarities of the first auxiliary permanent magnets 202A (the auxiliary permanent magnets on the first rotor are the first auxiliary permanent magnets 202A) facing away from the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B (the main permanent magnets on the second rotor are the second main permanent magnets 204B) facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B (the auxiliary permanent magnets on the second rotor are the second auxiliary permanent magnets 202B) facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second auxiliary permanent magnets 202B are opposite along the axial M direction;
the second method comprises the following steps: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are N poles or S poles, the polarities of the first auxiliary permanent magnets 202A facing away from the first stator 1A are S poles or N poles, the polarities of the second main permanent magnets 204B facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second auxiliary permanent magnets 202B are opposite to each other along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second main permanent magnets 204B are opposite to each other along the axial M direction;
the third method comprises the following steps: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating mode, the polarities of the first main permanent magnets 204A opposite to the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B opposite to the stator 1 are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second soft magnetic poles 201B are opposite along the axial direction M;
the method is as follows: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are both N poles or S poles, the polarities of the second main permanent magnets 204B facing towards the stator 1 are both N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second soft magnetic poles 201B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second main permanent magnets 204B are opposite along the axial direction M.
The direct current excitation unit 4 comprises a framework 401 and an excitation coil 402; the framework 401 is in a ring shape, a U-shaped groove 4011 is formed in the framework 401, and the framework 401 is made of a non-magnetic conductive insulating material; the excitation coil 402 is formed by winding enameled wires, and the excitation coil 402 is embedded in the U-shaped groove 4011.
The magnetic conductive cover 6 comprises magnetic conductive teeth 601 and a magnetic isolation groove 602 (the magnetic isolation groove 602 is arranged between the two magnetic conductive teeth 601); the magnetic conduction cover 6 is made of magnetic conduction material.
The installation mode of the magnetic conduction cover 6 is as follows: a central axis a of each magnetic conduction tooth 601 is radially overlapped with a central axis b of the soft magnetic pole 201 (the central axes are not axially overlapped, that is, the magnetic conduction teeth 601 are not attached to the soft magnetic pole 201); the central axis c of each magnetic isolation groove 602 is radially coincident with the central axis d of the main permanent magnet 204 (axially misaligned). The radial superposition means that when viewed from the axial direction M, the central axis b of the soft magnetic pole 201 is hidden behind the central axis a of the magnetic conductive tooth 601, or the central axis a of the magnetic conductive tooth 601 is hidden behind the central axis b of the soft magnetic pole 201; what we mean from the direction of M is: in fig. 1, the central axis b of the soft magnetic pole 201 is hidden behind the central axis a of the magnetic conductive tooth 601 after installation (the relationship between the central axis c of the magnetic isolation groove 602 and the central axis d of the main permanent magnet 204 is the same) as viewed from the left side or the right side, in fig. 9, the direction perpendicular to the right side of the drawing in fig. 9 is viewed, and the right side of the drawing in fig. 9 is taken as an example; the axial misalignment is, for example, shown in fig. 1, and as seen from fig. 1, the central axis b of the soft magnetic pole 201 and the central axis a of the magnetic conductive tooth 601 are arranged in a staggered manner from left to right (the same relationship between the central axis c of the magnetic isolation slot 602 and the central axis d of the main permanent magnet 204).
The direct current excitation magnetic flux 7 generated by the direct current I introduced into the excitation coil 302 of the direct current excitation unit 4 can enhance the magnetic induction intensity in the air gap 5, and the magnetic induction intensity in the air gap 5 can also be weakened by changing the direction of the current I in the excitation coil 402.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 to 10: the embodiment provides a double-stator double-rotor axial magnetic flux hybrid excitation motor which comprises stators 1, rotors 2 and a bracket 3, wherein the number of the stators 1 is two, namely a first stator 1A and a second stator 1B, and the number of the rotors 2 is two, namely a first rotor 2A and a second rotor 2B; the two rotors 2 are respectively arranged at two sides of the two stators 1 along the axial direction M, air gaps 8 are respectively arranged between the stators 1 and the rotors 2 and respectively comprise a first air gap 8A and a second air gap 8B, and the two stators 1 are in rotating fit with the two rotors 2;
preferably, as shown in fig. 6, the rotor 2 includes soft magnetic poles 201, a rotor yoke 203, main permanent magnets 204, and a rotor tray 206;
preferably, as shown in fig. 1 and fig. 3, the motor further includes a dc excitation unit 4, a magnetic conductive ring 5, and two magnetic conductive covers 6, where the two magnetic conductive covers 6 are a first magnetic conductive cover 6A and a second magnetic conductive cover 6B, respectively;
preferably, as shown in fig. 1, the two stators 1 are mounted back to back on the bracket 3 along the axial direction M, the magnetic conductive ring 5 is located between the two stators 1, and the magnetic conductive ring 5 is tightly attached to the two stators 1 without air gap;
preferably, as shown in fig. 3, the dc excitation unit 4 is sandwiched between the two stators 1, and the dc excitation unit 4 is located on the outer circumferential side of the magnetic conductive ring 5;
preferably, as shown in fig. 1 and fig. 3, the two magnetic conduction covers 6 are sleeved on the outer circle sides of the two stators 1; the two magnetic conduction covers 6 are tightly attached without gaps in the axial direction M (that is, the two magnetic conduction covers 6 are buckled together from the left side and the right side to cover the two stators 1), the inner circle of the magnetic conduction cover 6 is tightly attached with the outer circle of the rotor yoke 203 without gaps, the two rotors 2 are connected together by the magnetic conduction covers 6, and no relative motion exists between the two rotors 2;
preferably, as shown in fig. 3, the dc excitation flux 7 generated by the dc excitation unit 4 passes through the magnetic conductive ring 5, the first stator 1A, the first air gap 8A, the first soft magnetic pole 201A of the first rotor 2A (the soft magnetic pole of the first rotor 2A is the first soft magnetic pole 201A), the first rotor yoke 203A of the first rotor 2A (the rotor yoke of the first rotor 2A is the first rotor yoke 203A), the first magnetic conductive cover 6A, the second magnetically permeable cover 6B, the second rotor yoke 203B on the second rotor 2B (the rotor yoke on the second rotor 2B is the second rotor yoke 203B), the second soft magnetic pole 201B on the second rotor 2B (the soft magnetic pole on the second rotor 2B is the second soft magnetic pole 201B), the second air gap 8B, the second stator 1B, and the magnetic return ring 5 are closed, and the dc excitation magnetic flux 7 only passes through the two air gaps 8.
Preferably, as shown in fig. 4, the stator 1 includes stator teeth 101, a stator yoke 102, a multiphase ac coil 103, and a fixing hole 104; the multiphase alternating current coils 103 are wound on the stator teeth 101, and the same-phase multiphase alternating current coils 103 belonging to different stators 1 are connected in series or in parallel (the same-phase multiphase alternating current coils 103 belonging to two stators 1 are connected in series or in parallel); as shown in fig. 4 and 5, the bracket 3 is provided with fixing claws 301, the fixing holes 104 and the fixing claws 301 are arranged in the radial direction, and the fixing claws 301 pass through the fixing holes 104 to fix the stator 1 to the bracket 3 (when mounting, after the stator 1 is installed, the fixing claw 301 is inserted into the fixing hole 104 of the stator 1, the fixing claw 301 is further inserted into the bracket main body 302, and the fixing claw 301 is fixed with the bracket main body 302 by a screw ((i.e. a boss 3022 with a diameter larger than that of the bracket main body 302 is arranged in the bracket main body 302, the boss 3022 is provided with holes in both radial and axial directions, namely an axial hole 3021 and a radial hole, and the axial hole 3021 is communicated with the radial hole; the radial hole is to receive the fixation pawl 301 (i.e. for insertion of the fixation pawl 301, in fig. 5, the position where the fixing claw 301 is inserted), the axial hole 3021 is for placing a screw by which the fixing claw 301 and the holder main body 302 are fixedly attached).
Preferably, as shown in fig. 1 and 6, the rotor 2 further includes an auxiliary permanent magnet 202 and a magnetism isolating body 205; the auxiliary permanent magnet 202 is placed on the inner side of the soft magnetic pole 201 in the direction of the radial midline b; a magnetic isolating body 205 is arranged between the auxiliary permanent magnet 202 and the soft magnetic pole 201; the soft magnetic pole 201, the auxiliary permanent magnet 202, the main permanent magnet 204 and the isolation magnet 205 are attached to the surface of the rotor yoke 203 together; the rotor yoke 203 is fixedly connected with the rotor tray 206 through bolts or rivets; a second rotor tray 206B on the second rotor 2B (the rotor tray on the second rotor 2B is the second rotor tray 206B, and similarly, the rotor tray on the first rotor 2A is the first rotor tray 206A) is fixedly connected with the rotating shaft 9 through bolts or rivets; the rotor trays 206 have no relative movement with the rotating shaft 9 (both rotor trays have no relative movement with the rotating shaft 9); the rotating shaft 9 penetrates through the bracket 3, and the rotating shaft 9 can rotate relative to the bracket 3; the rotor yoke 203 and the soft magnetic pole 201 are made of magnetic conductive materials; rotor tray 206 is a non-magnetic material; the magnetism isolating body 205 is a non-magnetic conductive material or a magnetism isolating slit (when the magnetism isolating body is a magnetism isolating slit, it is equivalent to magnetic isolation by air).
Preferably, as shown in fig. 2 and 7a), the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 are arranged in a first manner: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A (the main permanent magnets on the first rotor are the first main permanent magnets 204A) facing away from the first stator 1A are S poles or N poles, the polarities of the first auxiliary permanent magnets 202A (the auxiliary permanent magnets on the first rotor are the first auxiliary permanent magnets 202A) facing away from the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B (the main permanent magnets on the second rotor are the second main permanent magnets 204B) facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B (the auxiliary permanent magnets on the second rotor are the second auxiliary permanent magnets 202B) facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second auxiliary permanent magnets 202B are opposite along the axial M direction; the main magnetic flux 11 path generated by the main permanent magnet 204 and the auxiliary permanent magnet 202 is as shown in fig. 11, the magnetic flux directions of the first stator main magnetic flux 11A and the second stator main magnetic flux 11B are both the same direction (counterclockwise direction in fig. 11), the magnetic flux directions generated by the main magnetic flux 11 and the dc excitation magnetic flux 7 in the air gap 8 are the same, at this time, the dc excitation magnetic flux 7 performs a magnetizing function on the air gap field in the motor, and changing the current direction of the excitation winding 402 can also perform a demagnetizing function on the motor.
Preferably, as shown in fig. 2 and 7b), the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 are arranged in a second manner: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are N poles or S poles, the polarities of the first auxiliary permanent magnets 202A facing away from the first stator 1A are S poles or N poles, the polarities of the second main permanent magnets 204B facing toward the second stator 1B are S poles or N poles, the polarities of the second auxiliary permanent magnets 202B facing toward the second stator 1B are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second auxiliary permanent magnets 202B are opposite to each other along the axial M direction, and the spatial positions of the first auxiliary permanent magnets 202A and the second main permanent magnets 204B are opposite to each other along the axial M direction;
preferably, as shown in fig. 2 and 7c), the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 are arranged in a third manner: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating mode, the polarities of the first main permanent magnets 204A opposite to the first stator 1A are N poles or S poles, the polarities of the second main permanent magnets 204B opposite to the stator 1 are N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second main permanent magnets 204B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second soft magnetic poles 201B are opposite along the axial direction M;
preferably, as shown in fig. 2 and 7d), the main permanent magnet 204 and the soft magnetic pole 201 in the rotor 2 are arranged in four ways: the main permanent magnets 204 and the soft magnetic poles 201 are arranged in a circumferential alternating manner, the polarities of the first main permanent magnets 204A facing away from the first stator 1A are both N poles or S poles, the polarities of the second main permanent magnets 204B facing towards the stator 1 are both N poles or S poles, the spatial positions of the first main permanent magnets 204A and the second soft magnetic poles 201B are opposite along the axial direction M, and the spatial positions of the first soft magnetic poles 201A and the second main permanent magnets 204B are opposite along the axial direction M.
Preferably, as shown in fig. 8, the dc excitation unit 4 includes a bobbin 401 and an excitation coil 402; the framework 401 is in a ring shape, a U-shaped groove 4011 is formed in the framework 401, and the framework 401 is made of a non-magnetic conductive insulating material; the excitation coil 402 is formed by winding enameled wires, and the excitation coil 402 is embedded in the U-shaped groove 4011.
Preferably, as shown in fig. 9, the magnetic conductive cover 6 includes a magnetic conductive tooth 601 and a magnetic isolation groove 602 (the magnetic isolation groove 602 is located between two magnetic conductive teeth 601); the magnetic conduction cover 6 is made of magnetic conduction material.
Preferably, as shown in fig. 10, the magnetic conductive cover 6 is mounted in a manner that: a central axis a of each magnetic conduction tooth 601 is radially overlapped with a central axis b of the soft magnetic pole 201 (the central axes are not axially overlapped, that is, the magnetic conduction teeth 601 are not attached to the soft magnetic pole 201); the central axis of each magnetism isolating groove 602cAnd main permanent magnet204 radially coincide (axially do not coincide). The radial superposition means that when viewed from the axial direction M, the central axis b of the soft magnetic pole 201 is hidden behind the central axis a of the magnetic conductive tooth 601, or the central axis a of the magnetic conductive tooth 601 is hidden behind the central axis b of the soft magnetic pole 201; what we mean from the direction of M is: in fig. 1, the central axis b of the soft magnetic pole 201 is hidden behind the central axis a of the magnetic conductive tooth 601 after installation (the relationship between the central axis c of the magnetic isolation groove 602 and the central axis d of the main permanent magnet 204 is the same) as viewed from the left side or the right side, in fig. 9, the direction perpendicular to the right side of the drawing in fig. 9 is viewed, and the right side of the drawing in fig. 9 is taken as an example; the axial misalignment is, for example, shown in fig. 1, and as seen from fig. 1, the central axis b of the soft magnetic pole 201 and the central axis a of the magnetic conductive tooth 601 are arranged in a staggered manner from left to right (the same relationship between the central axis c of the magnetic isolation slot 602 and the central axis d of the main permanent magnet 204).
Preferably, as shown in fig. 1 and 3, the dc excitation magnetic flux 7 generated by the excitation coil 302 of the dc excitation unit 4 passing the dc current I can enhance the magnetic induction in the air gap 5, and the magnetic induction in the air gap 5 can also be weakened by changing the direction of the current I in the excitation coil 402.
The invention provides an axial magnetic flux hybrid excitation motor, which has the advantages of wider speed regulation range and back electromotive force regulation capability, high power density and low demagnetization risk of a permanent magnet, and meanwhile, has the advantages of simple structure, easiness in manufacturing and convenience in installation.

Claims (8)

1. A double-stator double-rotor axial magnetic flux hybrid excitation motor comprises stators (1), rotors (2) and a support (3), wherein the number of the stators (1) is two, namely a first stator (1A) and a second stator (1B), and the number of the rotors (2) is two, namely a first rotor (2A) and a second rotor (2B); the two rotors (2) are respectively placed on two sides of the two stators (1) along the axial direction M, air gaps (8) are respectively arranged between the stators (1) and the rotors (2), the air gaps are respectively a first air gap (8A) and a second air gap (8B), and the two stators (1) are in rotating fit with the two rotors (2);
the rotor (2) comprises a soft magnetic pole (201), a rotor yoke (203), a main permanent magnet (204) and a rotor tray (206);
the method is characterized in that:
the motor also comprises a direct current excitation unit (4), a magnetic conduction ring (5) and two magnetic conduction covers (6), wherein the two magnetic conduction covers (6) are respectively a first magnetic conduction cover (6A) and a second magnetic conduction cover (6B);
the two stators (1) are arranged on the bracket (3) back to back along the axial direction M, the magnetic conduction ring (5) is positioned between the two stators (1), and the magnetic conduction ring (5) is tightly attached to the two stators (1) without air gaps;
the direct current excitation unit (4) is clamped between the two stators (1), and the direct current excitation unit (4) is arranged on the outer circle side of the magnetic conduction ring (5);
after the motor is assembled, the two magnetic conduction covers (6) are sleeved on the outer circle sides of the two stators (1); the two magnetic conduction covers (6) are tightly attached in the axial direction M without a gap, the inner circle of each magnetic conduction cover (6) is tightly attached to the outer circle of the rotor yoke (203) without a gap, the two rotors (2) are connected together through the magnetic conduction covers (6), and no relative motion exists between the two rotors (2);
direct current excitation magnetic flux (7) generated by the direct current excitation unit (4) is closed through the magnetic conduction ring (5), the first stator (1A), the first air gap (8A), the first soft magnetic pole (201A) on the first rotor (2A), the first rotor yoke (203A) on the first rotor (2A), the first magnetic conduction cover (6A), the second magnetic conduction cover (6B), the second rotor yoke (203B) on the second rotor (2B), the second soft magnetic pole (201B) on the second rotor (2B), the second air gap (8B), the second stator (1B) and the magnetic conduction ring (5), and the direct current excitation magnetic flux (7) only passes through the two air gaps (8).
2. The dual-stator dual-rotor axial flux hybrid excitation motor of claim 1, wherein: the stator (1) comprises stator teeth (101), a stator yoke (102), a multiphase alternating current coil (103) and a fixing hole (104); the multiphase alternating current coils (103) are wound on the stator teeth (101), and the same-phase multiphase alternating current coils (103) belonging to different stators (1) are connected in series or in parallel; the fixed claw (301) is arranged on the support (3), the fixed hole (104) and the fixed claw (301) are arranged along the radial direction, and the fixed claw (301) penetrates through the fixed hole (104) to fix the stator (1) on the support (3).
3. The dual-stator dual-rotor axial flux hybrid excitation motor of claim 1, wherein: the rotor (2) further comprises an auxiliary permanent magnet (202) and a magnetism isolating body (205); the auxiliary permanent magnet (202) is placed on the inner side of the soft magnetic pole (201) in the direction of the radial midline b; a separating magnet (205) is arranged between the auxiliary permanent magnet (202) and the soft magnetic pole (201); the soft magnetic pole (201), the auxiliary permanent magnet (202), the main permanent magnet (204) and the isolation magnet (205) are attached to the surface of the rotor yoke (203) together; the rotor yoke (203) is fixedly connected with the rotor tray (206); wherein a second rotor tray (206B) on the second rotor (2B) is fixedly connected with the rotating shaft (9); the rotor tray (206) and the rotating shaft (9) do not move relatively; the rotating shaft (9) penetrates through the bracket (3), and the rotating shaft (9) can rotate relative to the bracket (3); the rotor yoke (203) and the soft magnetic pole (201) are made of magnetic conductive materials; the rotor tray (206) is made of non-magnetic material; the magnetism isolating body (205) is made of a non-magnetic conductive material or a magnetism isolating slit.
4. The double-stator double-rotor axial flux hybrid excitation motor according to claim 1 and claim or 3, characterized in that: the arrangement mode of the main permanent magnet (204) and the soft magnetic pole (201) in the rotor (2) is one of the following modes: the first method is as follows: the main permanent magnets (204) and the soft magnetic poles (201) are arranged in a circumferential alternating mode, the polarities of the first main permanent magnet (204A) facing away from the first stator (1A) are S poles (or N poles), the polarities of the first auxiliary permanent magnet (202A) facing away from the first stator (1A) are N poles (or S poles), the polarities of the second main permanent magnet (204B) facing towards the second stator (1B) are S poles (or N poles), the polarities of the second auxiliary permanent magnet (202B) facing towards the second stator (1B) are N poles (or S poles), the spatial positions of the first main permanent magnet (204A) and the second main permanent magnet (204B) are opposite along the axial M direction, and the spatial positions of the first auxiliary permanent magnet (202A) and the second auxiliary permanent magnet (202B) are opposite along the axial M direction;
the second method comprises the following steps: the main permanent magnets (204) and the soft magnetic poles (201) are arranged in a circumferential alternating mode, the polarities of the first main permanent magnets (204A) facing away from the first stator (1A) are N poles or S poles, the polarities of the first auxiliary permanent magnets (202A) facing away from the first stator (1A) are S poles or N poles, the polarities of the second main permanent magnets (204B) facing towards the second stator (1B) are S poles or N poles, the polarities of the second auxiliary permanent magnets (202B) facing towards the second stator (1B) are N poles or S poles, the spatial positions of the first main permanent magnets (204A) and the second auxiliary permanent magnets (202B) are opposite to each other along the axial M direction, and the spatial positions of the first auxiliary permanent magnets (202A) and the second main permanent magnets (204B) are opposite to each other along the axial M direction;
the third method comprises the following steps: the main permanent magnets (204) and the soft magnetic poles (201) are arranged in a circumferential alternating mode, the polarities of the first main permanent magnet (204A) facing away from the first stator (1A) are N poles or S poles, the polarities of the second main permanent magnet (204B) facing towards the stator (1) are N poles or S poles, the spatial positions of the first main permanent magnet (204A) and the second main permanent magnet (204B) are opposite along the axial M direction, and the spatial positions of the first soft magnetic pole (201A) and the second soft magnetic pole (201B) are opposite along the axial M direction;
the method is as follows: the main permanent magnets (204) and the soft magnetic poles (201) are arranged in a circumferential alternating mode, the polarities of the first main permanent magnets (204A) facing away from the first stator (1A) are N poles or S poles, the polarities of the second main permanent magnets (204B) facing towards the stator (1) are N poles or S poles, the spatial positions of the first main permanent magnets (204A) and the second soft magnetic poles (201B) are opposite along the axial M direction, and the spatial positions of the first soft magnetic poles (201A) and the second main permanent magnets (204B) are opposite along the axial M direction.
5. The dual-stator dual-rotor axial flux hybrid excitation motor of claim 1, wherein: the direct current excitation unit (4) comprises a framework (401) and an excitation coil (402); the framework (401) is in a ring shape, a U-shaped groove (4011) is formed in the framework (401), and the framework (401) is made of a non-magnetic conductive insulating material; the excitation coil (402) is formed by winding an enameled wire, and the excitation coil (402) is embedded in the U-shaped groove (4011).
6. The dual-stator dual-rotor axial flux hybrid excitation motor of claim 1, wherein: the magnetic conduction cover (6) comprises magnetic conduction teeth (601) and a magnetic isolation groove (602); the magnetic conduction cover (6) is made of magnetic conduction materials.
7. The dual-stator dual-rotor axial flux hybrid excitation motor of claim 6, wherein: the installation mode of the magnetic conduction cover (6) is as follows: the central axis a of each magnetic conduction tooth (601) is radially overlapped with the central axis b of the soft magnetic pole (201) and is not axially overlapped; the central axis c of each magnetism isolating groove (602) is radially overlapped with the central axis d of the main permanent magnet (204) but not axially overlapped.
8. The dual-rotor single-stator axial flux hybrid excitation motor according to claim 1 or 6, wherein: the direct current excitation magnetic flux (7) generated by introducing direct current I into the excitation coil (302) of the direct current excitation unit (4) can enhance the magnetic induction intensity in the air gap (5), and the magnetic induction intensity in the air gap (5) can be weakened by changing the direction of the current I in the excitation coil (402).
CN202110778575.6A 2021-07-09 2021-07-09 Double-stator double-rotor axial magnetic flux hybrid excitation motor Withdrawn CN113437847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110778575.6A CN113437847A (en) 2021-07-09 2021-07-09 Double-stator double-rotor axial magnetic flux hybrid excitation motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110778575.6A CN113437847A (en) 2021-07-09 2021-07-09 Double-stator double-rotor axial magnetic flux hybrid excitation motor

Publications (1)

Publication Number Publication Date
CN113437847A true CN113437847A (en) 2021-09-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110778575.6A Withdrawn CN113437847A (en) 2021-07-09 2021-07-09 Double-stator double-rotor axial magnetic flux hybrid excitation motor

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116317421A (en) * 2023-05-15 2023-06-23 湖南大学 Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116317421A (en) * 2023-05-15 2023-06-23 湖南大学 Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor
CN116317421B (en) * 2023-05-15 2023-08-29 湖南大学 Single-stator double-rotor axial magnetic flux hybrid excitation counter-rotating motor

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Application publication date: 20210924