CN111817459B - Single stator dual rotor axial flux hybrid stator permanent magnet counter-rotating motor - Google Patents
Single stator dual rotor axial flux hybrid stator permanent magnet counter-rotating motor Download PDFInfo
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- CN111817459B CN111817459B CN202010741185.7A CN202010741185A CN111817459B CN 111817459 B CN111817459 B CN 111817459B CN 202010741185 A CN202010741185 A CN 202010741185A CN 111817459 B CN111817459 B CN 111817459B
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- 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
- H02K1/17—Stator cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
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- 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
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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
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
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- 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
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- 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
本发明提供了一种单定子双转子轴向磁通混合定子永磁对转电机，涉及电机技术领域。所述对转电机包括：盘式定子和两个盘式转子；盘式转子靠近盘式定子的一侧设置转子凸极；盘式定子上绕制有定子绕组，定子绕组在盘式定子的两侧电流相序相反；盘式定子的第一侧设置有混合永磁体组，第二侧设置有高矫顽力永磁体组，混合永磁体组包括：第一高矫顽力永磁体和低矫顽力永磁体，低矫顽力永磁体绕设有调磁绕组。本发明中，调磁绕组内施加幅值大小和方向可控的直流电流矢量脉冲，改变低矫顽力永磁体的磁化强度，从而调节盘式定子第一侧的气隙磁场，实现盘式定子两侧的盘式转子同转速下不同转矩输出，适应不对称负载工况的需求。
The present invention provides a single-stator dual-rotor axial flux hybrid stator permanent magnet counter-rotating motor, which relates to the technical field of motors. The counter-rotating motor comprises: a disc stator and two disc rotors; a rotor salient pole is arranged on the side of the disc rotor close to the disc stator; a stator winding is wound on the disc stator, and the current phase sequence of the stator winding on both sides of the disc stator is opposite; a hybrid permanent magnet group is arranged on the first side of the disc stator, and a high coercive force permanent magnet group is arranged on the second side, and the hybrid permanent magnet group includes: a first high coercive force permanent magnet and a low coercive force permanent magnet, and the low coercive force permanent magnet is wound with a magnetic adjustment winding. In the present invention, a DC current vector pulse with controllable amplitude and direction is applied to the magnetic adjustment winding to change the magnetization intensity of the low coercive force permanent magnet, thereby adjusting the air gap magnetic field on the first side of the disc stator, so as to achieve different torque outputs of the disc rotors on both sides of the disc stator at the same speed, so as to meet the needs of asymmetric load conditions.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a single-stator double-rotor axial magnetic flux hybrid stator permanent magnet counter-rotating motor.
Background
The contra-rotating motor is provided with a single-input electric port and two independent-output mechanical ports, can be applied to a contra-rotating propeller propulsion system, and the contra-rotating propeller is a key component for ensuring stable propulsion of an underwater vehicle and stable flight of an airplane, and is widely applied to the fields of marine exploration and aerospace. The counter-rotating motor driving system has the advantages of compact structure, small volume, light weight and the like, has more development potential, and researchers at home and abroad in recent years also pay more attention to the counter-rotating motor.
There are two main types of counter-rotating machines currently developed: stator-rotor counter-rotating motors and single-stator double-rotor counter-rotating motors. The stator and the rotor counter-rotating motor fix the stator on the shell through the bearing, and the stator and the rotor can rotate relative to the shell and have opposite rotation directions. The stator power supply is introduced by an electric brush and a slip ring, the mechanical structure complexity is increased, the system reliability is reduced, and the application and popularization of the motor are severely restricted; and when the load is asymmetric, the rotation speeds of the stator and the rotor are difficult to ensure to be the same, and the propulsion efficiency is seriously influenced if the rotor is used in a contra-rotating propeller system. The single-stator double-rotor counter-rotating motor usually adopts an alternating-current permanent magnet form and consists of a stator and two rotors, wherein the two rotors are mechanically independent, a stator winding can generate two magnetic fields rotating in opposite directions through special design, and the two magnetic fields are controlled by one inverter to realize the opposite-direction rotation of the double rotors. The motor does not need devices such as brushes, commutators and the like, and is convenient to maintain and reliable to operate. Compared with a stator-rotor counter-rotating motor, the brushless single-stator double-rotor permanent magnet counter-rotating motor has better application and popularization values.
However, the single-stator double-rotor counter-rotating motor adopts one inverter to drive two permanent magnet rotors simultaneously, and because of the non-regulation of the air-gap field of the permanent magnet motor, when the load is asymmetric or the load is suddenly changed, the current change caused by the torque regulation of one rotor inevitably leads to the change of the torque of the other rotor, and the two different torques are related and coupled with each other, so that when the load is asymmetric or the load of one rotor is suddenly changed, the traditional control technology is difficult to realize the 'compatible' control of the torques of the two rotors.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a single-stator double-rotor axial magnetic flux hybrid stator permanent magnet counter-rotating motor, which solves the problem that the single-stator double-rotor counter-rotating motor is difficult to adapt to asymmetric load.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme:
A single stator dual rotor axial flux hybrid stator permanent magnet counter-rotating electric machine, the counter-rotating electric machine comprising: a disc stator and two disc rotors;
the two disc-type rotors are respectively positioned at two sides of the disc-type stator, and rotor salient poles are arranged at one side, close to the disc-type stator, of the disc-type rotors;
The disc-type stator is wound with stator windings, and current phase sequences of the stator windings are opposite at two sides of the disc-type stator; permanent magnets are arranged on two sides of the disc-type stator, wherein a mixed permanent magnet group is arranged on a first side of the disc-type stator, a high-coercivity permanent magnet group is arranged on a second side of the disc-type stator, and the mixed permanent magnet group comprises: the permanent magnet with the low coercivity is provided with a magnetic regulating winding in a winding mode.
Preferably, the rotor salient poles are arranged at radial intervals, the stator salient poles are arranged at two sides of the disc-type stator at radial intervals, and stator grooves are formed between the stator salient poles.
Preferably, the permanent magnets are embedded in spaced stator slots, the stator slots of the first side of the disc stator comprising: an inner groove and an outer groove, the inner groove is close to the axis of the disc stator, and the outer groove is far away from the axis of the disc stator.
Preferably, the high-coercivity permanent magnet group comprises a plurality of second high-coercivity permanent magnets, and the first high-coercivity permanent magnets and the low-coercivity permanent magnets are respectively embedded in the inner groove and the outer groove; and the second high-coercivity permanent magnet is embedded in stator grooves spaced on the second side of the disc stator.
Preferably, a magnetic isolation plate is arranged in the middle of the disc-type stator, and the magnetic isolation plate is perpendicular to the axis of the disc-type stator.
Preferably, a magnetism isolating arc plate is arranged between the first high-coercivity permanent magnet and the low-coercivity permanent magnet, and the magnetism isolating arc plate is positioned between the inner groove and the outer groove.
Preferably, the stator winding is a double-sided reverse phase sequence parallel type sector three-phase winding; the stator windings on two sides of the disc stator are of double-layer centralized structures, each stator winding comprises a plurality of winding coils, each centralized winding coil is embedded in a stator slot at intervals, and the stator slots embedded with the winding coils are staggered with the stator slots embedded with the permanent magnets; the winding coil is in a fan shape; the three-phase winding coils are sequentially arranged, and a plurality of winding coils of the same phase are connected in series at the end part; the stator windings on both sides of the disc stator are arranged in opposite phase sequence and then are connected in parallel to form a set of windings.
Preferably, the stator winding is a three-phase crossed annular winding, and the stator winding comprises: a phase A winding, a phase B winding and a phase C winding; the A phase winding, the B phase winding and the C phase winding are all wound in stator slots of the disc type stator, and the stator slots of the winding setting sub-winding and the stator slots of the embedded permanent magnet are staggered; the B-phase winding is intersected with the A-phase winding at the inner wall and the outer wall of the ring of the disc type stator, and the C-phase winding is intersected with the A-phase winding and the B-phase winding at the same time.
Preferably, the number of the first high-coercivity permanent magnet, the low-coercivity permanent magnet and the second high-coercivity permanent magnet is twelve.
Preferably, the disc stator is fixed in the casing, the disc rotor is rotatably connected with the casing through a bearing, the disc rotor at two sides of the disc stator is fixedly connected with the outer shaft and the inner shaft of the nested mechanical shaft respectively, and the other ends of the inner shaft and the outer shaft are connected with two contra-rotating screw propellers respectively.
(III) beneficial effects
The invention provides a single-stator double-rotor axial magnetic flux hybrid stator permanent magnet counter-rotating motor. Compared with the prior art, the method has the following beneficial effects:
In the present invention, the counter motor includes: a disc stator and two disc rotors; the two disc-type rotors are respectively positioned at two sides of the disc-type stator, and rotor salient poles are arranged at one side of the disc-type rotor, which is close to the disc-type stator; the disc type stator is wound with stator windings, and the current phase sequences of the stator windings are opposite at the two sides of the disc type stator; the both sides of disc stator are provided with the permanent magnet, and wherein, the first side of disc stator is provided with mixed permanent magnet group, and the second side is provided with high coercivity permanent magnet group, and mixed permanent magnet group includes: the first permanent magnet with high coercivity and the low coercivity are provided with a magnetic regulating winding in a winding mode; direct current vector pulse with controllable amplitude and direction is applied in the magnetic regulating winding, so that the magnetization intensity of the low-coercivity permanent magnet is changed, the air gap field of the first side of the disc stator is regulated, different torque outputs of disc rotors at two sides of the disc stator under the same rotating speed are realized, and the requirements of asymmetric load working conditions are met.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an application environment of a counter-rotating motor according to an embodiment of the present invention;
FIG. 2 is a left side assembled perspective view of a counter-rotating motor according to embodiment 1 of the present invention;
FIG. 3 is a right side assembled perspective view of the counter-rotating electric machine in example 1 of the present invention;
FIG. 4 is a left side assembled perspective view of the counter-rotating electric machine in example 2 of the present invention;
Fig. 5 is a right-side assembled perspective view of the counter-rotating electric machine in embodiment 2 of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the application solves the problem that the single-stator double-rotor counter-rotating motor is difficult to adapt to asymmetric load by providing the single-stator double-rotor axial magnetic flux hybrid stator permanent magnet counter-rotating motor.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
In an embodiment of the present invention, the counter-rotating motor includes: a disc stator and two disc rotors; the two disc-type rotors are respectively positioned at two sides of the disc-type stator, and rotor salient poles are arranged at one side of the disc-type rotor, which is close to the disc-type stator; the disc type stator is wound with stator windings, and the current phase sequences of the stator windings are opposite at the two sides of the disc type stator; the both sides of disc stator are provided with the permanent magnet, and wherein, the first side of disc stator is provided with mixed permanent magnet group, and the second side is provided with high coercivity permanent magnet group, and mixed permanent magnet group includes: the first permanent magnet with high coercivity and the low coercivity are provided with a magnetic regulating winding in a winding mode; direct current vector pulse with controllable amplitude and direction is applied in the magnetic regulating winding, so that the magnetization intensity of the low-coercivity permanent magnet is changed, the air gap field of the first side of the disc stator is regulated, different torque outputs of disc rotors at two sides of the disc stator under the same rotating speed are realized, and the requirements of asymmetric load working conditions are met.
On the other hand, the disc rotor has no winding or permanent magnet, has high operation reliability, compared with a counter-rotating motor with permanent magnet arranged on the rotor, the permanent magnet does not need to vibrate along with the rotor, and the loss of the magnetic field of the permanent magnet is greatly reduced.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1:
As shown in fig. 1 to 3, the present invention provides a single-stator double-rotor axial flux hybrid stator permanent magnet counter-rotating motor, comprising: a disc stator 10 and two disc rotors 20;
Two disc rotors 20 are respectively positioned at two sides of the disc stator 10, and rotor salient poles 21 are arranged at one side of the disc rotor 20 close to the disc stator 10;
The disc stator 10 is wound with a stator winding 11, and the current phase sequences of the stator winding 11 on two sides of the disc stator 10 are opposite; permanent magnets are arranged on two sides of the disc stator 10, wherein a mixed permanent magnet group is arranged on a first side of the disc stator 10, a high coercivity permanent magnet group is arranged on a second side of the disc stator, and the mixed permanent magnet group comprises: the permanent magnet with high coercivity 30 (such as neodymium iron boron) and the permanent magnet with low coercivity 40 (such as aluminum nickel cobalt) are arranged around the permanent magnet with low coercivity 40, and the magnetic regulating windings 41 are connected in series. Direct current vector pulse with controllable amplitude and direction is applied in the magnetic regulating winding 41, so that the magnetization intensity of the low-coercivity permanent magnet 40 is changed, the air gap magnetic field of the first side of the disc stator 10 is regulated, different torque outputs of the disc rotors 20 at the two sides of the disc stator 10 under the same rotating speed are realized, and the requirements of asymmetric load working conditions are met.
On the other hand, the disc rotor 20 has no winding or permanent magnet, so that the operation reliability is high, and compared with a counter-rotating motor with the permanent magnet arranged on the rotor, the permanent magnet does not vibrate along with the rotor, and the loss of magnetism of the permanent magnet is greatly reduced.
As shown in fig. 2 and 3, the rotor salient poles 21 are arranged at radial intervals, and the rotor salient poles 21 are made of magnetic conductive material (such as iron).
As shown in fig. 2 and 3, stator salient poles 12 are arranged on both sides of the disc stator 10, the stator salient poles 12 are arranged at radial intervals, and stator slots are formed between the stator salient poles 12.
As shown in fig. 2 and 3, the permanent magnets are embedded in spaced stator slots, and the stator slots on the first side of the disc stator 10 include: an inner groove near the axis of the disc stator 10 and an outer groove far from the axis of the disc stator 10.
As shown in fig. 2 and 3, the high-coercivity permanent magnet group includes a plurality of second high-coercivity permanent magnets 50, and the inner groove and the outer groove are respectively embedded with a first high-coercivity permanent magnet 30 and a low-coercivity permanent magnet 40; the second high coercivity permanent magnet 50 is embedded in spaced stator slots on the second side of the disc stator 10.
As shown in fig. 2 and 3, a magnetic shielding plate 13 is disposed in the middle of the disc stator 10, and the magnetic shielding plate 13 is disposed perpendicular to the axis of the disc stator 10, so as to prevent the magnetic fields at both sides of the disc stator 10 from affecting each other.
As shown in fig. 2 and 3, a magnetic isolation arc plate 14 is disposed between the first high-coercivity permanent magnet 30 and the low-coercivity permanent magnet 40, and the magnetic isolation arc plate 14 is located between the inner groove and the outer groove, so that the magnetic fields between the first high-coercivity permanent magnet 30 and the low-coercivity permanent magnet 40 are prevented from being affected.
As shown in fig. 2 and 3, the stator winding 11 is a double-sided reversed-phase parallel fan-shaped three-phase winding; the stator windings 11 on two sides of the disc stator 10 are of a double-layer centralized structure, the stator windings 11 comprise a plurality of winding coils, each centralized winding coil is embedded in a stator slot at intervals, and the stator slots embedded with the winding coils and the stator slots embedded with the permanent magnets are staggered; the winding coil is in a fan shape; the three-phase winding coils are sequentially arranged, and a plurality of winding coils of the same phase are connected in series at the end part; the stator windings 11 on both sides of the disc stator 10 are arranged in opposite phase sequence and are connected in parallel to form a set of windings.
As shown in fig. 1, the disc stator 10 is fixed in the casing, the disc rotor 20 is rotatably connected with the casing through a bearing, the disc rotors 20 at two sides of the disc stator 10 are respectively fixedly connected with an outer shaft and an inner shaft of the nested mechanical shaft, and the other ends of the inner shaft and the outer shaft are respectively connected with two contra-rotating propellers.
As shown in fig. 3 and 4, the number of the first high coercive force permanent magnet 30, the low coercive force permanent magnet 40, and the second high coercive force permanent magnet 50 is twelve.
Example 2:
As shown in fig. 4 and 5, the stator winding 11 is a three-phase crossed annular winding, and the stator winding 11 includes: a phase winding 15, a B phase winding 16 and a C phase winding 17; the A phase winding 15, the B phase winding 16 and the C phase winding 17 are all wound in stator slots of the disc stator 10, and the stator slots of the winding setting sub-winding 11 and the stator slots of the embedded permanent magnets are staggered; at the inner and outer ring walls of the disc stator 10, the B-phase winding 16 crosses the a-phase winding 15, and the C-phase winding 17 crosses both the a-phase winding 15 and the B-phase winding 16.
The stator winding 11 is wound on the disc stator 10 in a three-phase winding two-phase crossing manner, so that the current phase sequences of the windings at two sides of the disc stator 10 are opposite, and a rotating magnetic field with equal and opposite values is generated at two sides of the disc stator 10.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. In an embodiment of the present invention, the counter-rotating motor includes: a disc stator and two disc rotors; the two disc-type rotors are respectively positioned at two sides of the disc-type stator, and rotor salient poles are arranged at one side of the disc-type rotor, which is close to the disc-type stator; the disc type stator is wound with stator windings, and the current phase sequences of the stator windings are opposite at the two sides of the disc type stator; the both sides of disc stator are provided with the permanent magnet, and wherein, the first side of disc stator is provided with mixed permanent magnet group, and the second side is provided with high coercivity permanent magnet group, and mixed permanent magnet group includes: the first permanent magnet with high coercivity and the low coercivity are provided with a magnetic regulating winding in a winding mode; direct current vector pulse with controllable amplitude and direction is applied in the magnetic regulating winding, so that the magnetization intensity of the low-coercivity permanent magnet is changed, the air gap field of the first side of the disc stator is regulated, different torque outputs of disc rotors at two sides of the disc stator under the same rotating speed are realized, and the requirements of asymmetric load working conditions are met.
2. In the embodiment of the application, the disc rotor has no winding or permanent magnet, so that the operation reliability is high, and compared with a counter-rotating motor with the permanent magnet arranged on the rotor, the counter-rotating motor has the advantages that the permanent magnet does not vibrate along with the rotor, and the loss of the magnet risk of the permanent magnet is greatly reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010741185.7A CN111817459B (en) | 2020-07-29 | 2020-07-29 | Single stator dual rotor axial flux hybrid stator permanent magnet counter-rotating motor |
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| CN202010741185.7A CN111817459B (en) | 2020-07-29 | 2020-07-29 | Single stator dual rotor axial flux hybrid stator permanent magnet counter-rotating motor |
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| CN111817459A CN111817459A (en) | 2020-10-23 |
| CN111817459B true CN111817459B (en) | 2024-11-15 |
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| CN112467950B (en) * | 2020-11-19 | 2022-02-11 | 东南大学 | A rotor permanent magnet type dual rotor axial magnetic field hybrid excitation flux switching motor |
| CN112737255B (en) * | 2020-12-25 | 2022-04-05 | 中国科学院宁波材料技术与工程研究所 | Disc type double-rotor counter-rotating motor and aircraft |
| CN112688518A (en) * | 2020-12-29 | 2021-04-20 | 福州大学 | Multi-disc type structure axial magnetic field mixed permanent magnet memory motor |
| CN113364162B (en) * | 2021-06-21 | 2022-04-15 | 湖州小为科技有限公司 | A stator structure, rotor structure, ultra-thin motor and stator forming process |
| CN114094629B (en) * | 2021-12-02 | 2023-08-22 | 湖南大学 | A method for maximum power tracking control of a coaxial counter-rotating wind power generator and the generator |
| CN114268203B (en) * | 2021-12-30 | 2023-04-07 | 中国科学院宁波材料技术与工程研究所 | Free rotation device with double output shafts in same direction |
| CN114614648B (en) * | 2022-03-07 | 2023-08-22 | 南京信息工程大学 | Axial flux weakening magnetic speed-expanding permanent magnet motor capable of simultaneously rotating positively and negatively |
| CN116317421B (en) * | 2023-05-15 | 2023-08-29 | 湖南大学 | A single-stator and double-rotor axial flux mixed excitation counter-rotating motor |
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| CN212627354U (en) * | 2020-07-29 | 2021-02-26 | 湖南大学 | Single Stator Double Rotor Axial Flux Hybrid Stator Permanent Magnet Contra-Rotating Motor |
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| WO2009065256A1 (en) * | 2007-11-22 | 2009-05-28 | Shenzhen Academy Of Aerospace Technology | Single-phase, three-phase and high-power multiphase disc-type permanent magnet machines |
| CN104578477B (en) * | 2014-12-11 | 2017-02-22 | 东南大学 | Mixed permanent magnetic pole-alternating and magnetic flux-switching memory motor and winding switching magnetism-weakening control method thereof |
| CN106059131B (en) * | 2016-07-04 | 2019-02-12 | 湖南大学 | A hybrid magnetic circuit drive motor |
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