CN103051138A - Multi-tooth magnetic flux switching permanent magnetic memory motor - Google Patents
Multi-tooth magnetic flux switching permanent magnetic memory motor Download PDFInfo
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- CN103051138A CN103051138A CN2012105590557A CN201210559055A CN103051138A CN 103051138 A CN103051138 A CN 103051138A CN 2012105590557 A CN2012105590557 A CN 2012105590557A CN 201210559055 A CN201210559055 A CN 201210559055A CN 103051138 A CN103051138 A CN 103051138A
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Abstract
The invention discloses a multi-tooth magnetic flux switching permanent magnetic memory motor comprising a casing, and a stator, a rotor (2) and a non-magnetic conduction rotating shaft (8) which are contained in the casing; the stator (1) is arranged outside the rotor (2); the rotor (2) is fixedly arranged on the non-magnetic conduction rotating shaft (8), and is of a salient pole type; the stator comprises a stator iron core (1), permanent magnetic bodies (3), a three-phase armature winding (4) and pulse windings (5); the stator iron core (1) comprises a plurality of stator yokes and stator poles which are protruded from the stator yokes to the center of the stator iron core; the three-phase armature winding (4) is wound on the stator poles; the permanent magnetic bodies (3) are embedded in the stator poles; cavities (6) are arranged between the permanent magnetic bodies (3) and the non-magnetic conduction rotating shaft (8); the pulse windings (5) are arranged in the cavities (6); and magnetic conduction bridges (7) are arranged between the pulse windings (5) and the casing. According to the multi-tooth magnetic flux switching permanent magnetic memory motor, the weak magnetic capability of the rotating speed operation scope of the motor are improved, and the air gap flux density of the motor is improved.
Description
Technical field
The present invention relates to a kind of adjustable magnetic flow permanent magnet motor, be specifically related to a kind of novel Magneticflux-switching type permanent magnetism memory electrical machine, it can improve the weak magnetic energy power of motor, is applicable to wide range speed control operation occasion, belongs to the motor manufacturing technology field.
Background technology
In machine field, common permagnetic synchronous motor (PMSM) is because the inherent characteristic of common permanent magnetic material (such as neodymium iron boron), air-gap field in the motor keeps constant substantially, speed adjustable range is very limited during as electric operation, such as electric automobile, the application that occasion is directly driven in the wide range speed controls such as Aero-Space is subject to certain limitation, so with the adjustable magnetic flow permanent magnet motor that effectively is adjusted to target of the air-gap field of realizing magneto be the motor research field focus and difficult point always.Permanent magnetism memory electrical machine (hereinafter to be referred as " memory electrical machine ") is a kind of novel magnetic flux controllable type magneto, it adopts the low-coercivity Al-Ni-Co permanent magnet, produce Circumferential field by stator winding or DC pulse winding, thereby change permanent magnet magnetization intensity air-gap field is regulated, the close level of magnetic of permanent magnet has the advantages that to be remembered by permanent magnet simultaneously.
Traditional memory electrical machine is proposed in calendar year 2001 by Croatia descendants Germany motor scholar Ao Situoweiqi (Ostovic) professor.The memory electrical machine of this topological structure develops by writing pole type motor, and rotor is by Al-Ni-Co permanent magnet, non-magnetic interlayer and rotor core sandwich structure consisting.This special construction can be at any time carries out online repeatedly the irreversible degaussing of filling to permanent magnet, reduces simultaneously quadrature axis armature reaction to the impact of air-gap field.
Yet the rotor structure of the memory electrical machine of this basic structure exists deficiency.Owing to adopted the AlNiCo permanent magnet, in order to obtain enough magnetic fluxs, just must adopt the material of adequate thickness.And under above-mentioned tangential structure, be difficult for realizing; Simultaneously, rotor must be done every magnetic treatment, and whole rotor is fastened on the axle by a plurality of parts, has reduced Mechanical Reliability; At last, needing the occasion of wide range speed control, in lathe and electric automobile, adopt the permanent magnetism air gap main flux of said structure not high, the motor energy index can not be satisfactory.
In the last few years, a kind of novel stator permanent magnetic type electric-magnetic flux switched permanent magnetism (Switched Flux Permanent Magnet is hereinafter to be referred as SFPM) motor because its remarkable performance is subject to the Chinese scholars extensive concern.The SFPM motor has the advantages such as the high and simple structure, high reliability of the sinusoidal degree of high power density, efficient height, unloaded magnetic linkage bipolarity, unloaded induced electromotive force.In the permagnetic synchronous motor field, the SFPM motor has replaced traditional built-in and surface-mounted permanent magnet machine gradually, has larger industrial value in fields such as aviations.
Yet traditional SFPM electric machine rotor iron core exists magnetic hysteresis loss and eddy current loss, and air-gap field produces by permanent magnet excitation, is difficult to regulate, and has limited it and has driven application of occasion in the electric automobile wide range speed control; Secondly also have the leakage field problem, the permanent magnet utilance is not high, causes electromagnetic compatibility problem.
France scholar Rahm Emanuel. yellow (E.Hoang) proposed mixed excited magnetic pass and switched permanent magnetism (Hybrid Excitation Switched Flux Permanent Magnet is hereinafter to be referred as HESFPM) motor.It is characterized by: realized the controllability of air-gap field, improved permanent magnet utilance and power density, the advantage such as cogging torque is little; This motor excitation magnetic potential and permanent magnetic potential are in parallel, so that its weak magnetic energy power is very outstanding.But there are two magnetic potential sources simultaneously in this motor, and both magnetic fluxs intercouple easily, influence each other, and have increased the complexity of electromagnetic property, and exists increase excitation loss, Control System for Exciting Current to realize the weakness such as difficulty is large.
Summary of the invention
Technical problem: inventing technical problem to be solved is: propose the outstanding multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine (Multi-tooth Switched Flux Memory Machine) of a kind of high power density and air-gap flux adjustability.
Technical scheme: for solving the problems of the technologies described above, the invention discloses a kind of multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine, comprise casing, be housed in stator in the casing, rotor and magnetic rotating shaft not, stator is located at rotor exterior; Rotor is fixed in not on the magnetic rotating shaft, is salient pole type;
Stator comprises stator core, permanent magnet, threephase armature winding and pulse winding; Stator core comprises some stator yoke and the stator poles of giving prominence to the stator core center position from stator yoke;
Threephase armature concentrates winding to be wrapped on the stator poles;
Permanent magnet is embedded in the stator poles, and at permanent magnet and be not provided with cavity between the magnetic rotating shaft, the pulse winding is arranged in this cavity; Be provided with the magnetic conduction bridge between pulse winding and casing.
Preferably, " V " type that is shaped as of stator core, material is silicon steel sheet.
Preferably, stator poles comprises stator poles main part and the some armature tooths that extend internally from the stator poles main part;
Wherein, the second armature tooth is made of the conducting magnet core limit of the stator poles main part of permanent magnet and " V " type stator silicon steel sheet, and the second armature tooth both sides are respectively equipped with independently the first armature tooth.
Preferably, the pulse winding is concentrated winding, and the pulse winding is wrapped on the stator yoke of stator core, and pulse winding successively head and the tail series connection forms the monophasic pulses if winding, and the pulse current direction forms and is alternately distributed.
Preferably, described permanent magnet is the Al-Ni-Co permanent magnet material of trapezium structure, and permanent magnet is along circumference cutting orientation magnetizing, the N utmost point and S utmost point alternative arrangement, and is shaped as trapezium structure.
Preferably, described cavity is inverted trapezoidal structure, and two base angles become level and smooth fillet shape.
Beneficial effect: 1, whole motor overall structure is simple, because motor has adopted the stator permanent magnetic type structure, Al-Ni-Co permanent magnet, pulse winding, armature winding all place stator, is easy to heat radiation, cooling, improves power density.And rotor structure is very firm, is specially adapted to high-speed cruising.
2, the armature winding pulse winding of this motor employing all adopts centralized winding, has effectively reduced tip lengths, cuts down the motor end effect.And copper loss is very little, improves the motor operational efficiency.
3, this electric machine stator iron adopts multiple tooth structure, keeping both stator internal-and external diameters, gas length, the rotor facewidth, permanent magnet thickness, permanent magnet material and the number of turn etc. all under the identical prerequisite, multiple tooth magnetic pass switching electromotor can be saved a large amount of permanent magnets, simplifies processing.Simultaneously, in the underloading situation multiple tooth magnetic pass switching electromotor possess torque density high with the characteristics such as torque pulsation is little.
4, this motor can be at any time carries out online repeatedly the irreversible degaussing of filling to Al-Ni-Co permanent magnet, and according to the record the degaussing parameter of filling call at any time to satisfy operational objective, realize the online adjustable magnetic of air-gap field, simultaneously pulse winding only within the very short time, apply fill, demagnetizing current.
5, this motor has been inherited the outstanding weak magnetism speed expansion ability of memory electrical machine, the magnetic conduction bridge construction that is provided with guarantees to adopt less pulse umber of turn just can make pulse current change in a big way the magnetization of Al-Ni-Co permanent magnet, therefore is fit to very much the fields such as Aero-Space, electric automobile.
Description of drawings
Fig. 1 is electric machine structure schematic diagram of the present invention, and wherein the direction of arrow represents the permanent magnet magnetizing direction;
Fig. 2 is external rotor form of the present invention, i.e. the multiple tooth Magneticflux-switching type permanent magnetism of external rotor memory electrical machine, and wherein the direction of arrow represents the permanent magnet magnetizing direction;
Among the figure: 1 stator core, 2 rotors, 3 Al-Ni-Co permanent magnets, 4 threephase armature windings, 5 monophasic pulses if windings, 6 pulse winding cavitys, 7 magnetic conduction bridges, 8 non-magnetic rotating shafts, 1.1 first armature tooths, 1.2 second armature tooths.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
The invention discloses a kind of multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine, comprise casing, be housed in stator in the casing, rotor 2 and magnetic rotating shaft 8 not, stator 1 is located at rotor 2 outsides; Rotor 2 is fixed in not on the magnetic rotating shaft 8, is salient pole type; Stator comprises stator core 1, permanent magnet 3, threephase armature winding 4 and pulse winding 5; Stator core 1 comprises some stator yoke and the stator poles of giving prominence to the stator core center position from stator yoke; Threephase armature concentrates winding 4 to be wrapped on the stator poles; Permanent magnet 3 is embedded in the stator poles, and at permanent magnet 3 and be not provided with cavity 6 between the magnetic rotating shaft 8, pulse winding 5 is arranged in this cavity 6; Be provided with magnetic conduction bridge 7 between pulse winding 5 and casing.
" V " type that is shaped as of stator core 1, material is silicon steel sheet.
Stator poles comprises stator poles main part and the some armature tooths that extend internally from the stator poles main part;
Wherein, the second armature tooth 1.2 is made of the conducting magnet core limit of the stator poles main part of permanent magnet 3 and " V " type stator silicon steel sheet 1, and the second armature tooth 1.2 both sides are respectively equipped with independently the first armature tooth 1.1.
Pulse winding 5 is concentrated winding, and pulse winding 5 is wrapped on the stator yoke of stator core 1, and pulse winding 5 successively head and the tail series connection forms the monophasic pulses if winding, and the pulse current direction forms and is alternately distributed.
Described permanent magnet 3 is the Al-Ni-Co permanent magnet material of trapezium structure, and permanent magnet 3 is along circumference cutting orientation magnetizing, the N utmost point and S utmost point alternative arrangement, and is shaped as trapezium structure.
Described cavity 6 is inverted trapezoidal structure, and two base angles become level and smooth fillet shape.
Described each stator tooth rearranges by " trapezoidal " Al-Ni-Co permanent magnet, " V " type stator core, and permanent magnet is along circumferentially magnetizing, and the N utmost point, the S utmost point are alternately distributed; The monophasic pulses if winding is for concentrating winding to be wrapped on the stator yoke, and adjacent pulse winding successively head and the tail is connected, and the pulse current direction forms and is alternately distributed, and three-phase stator winding is concentrated winding.
Multiple tooth magneticfocusing structure is adopted in described stator core, has saved the permanent magnetic material consumption, Effective Raise the air gap flux density of motor; Simultaneously, underloading situation lower tooth Magneticflux-switching type permanent magnetism memory electrical machine possess torque density high with the characteristics such as torque pulsation is little.
Described permanent magnet is taked special Al-Ni-Co permanent magnet, and this permanent magnetic material has coercive force, characteristics that remanent magnetism is high, adopts the cast moulding manufacturing process, and temperature stability is high.Permanent magnetic potential and pulse winding magnetic potential consist of parallel magnetic circuit.The magnetic field energy that trapezoidal design can guarantee to apply pulse current largely to its fill, degaussing, thereby realize that motor gas-gap magnetic field is adjustable, improve motor speed range of operation and weak magnetic energy power.
Described pulse winding cavity adopts the profile of " inverted trapezoidal ", and adopts rounding off between two base angles and the base; The pulsed field magnetization magnetic line of force is closed through iron core, permanent magnet and magnetic conduction bridge, so that adopt less pulse umber of turn just can guarantee that pulse current has preferably adjustable magnetic effect to Al-Ni-Co permanent magnet.
Described magnetic conduction bridge can provide the closed-loop path for pulse winding magnetic circuit, has reduced electric excitation copper loss, has realized the flexible tunable characteristic of the magnetic field intensity of permanent magnet.And magnetic conduction bridge and " V " type stator core are an integral body.
The operation logic of a kind of multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine of the present invention is as follows:
The magnetic flux of linkage (magnetic linkage) can be according to the diverse location switching direction of rotor in the motor stator winding, therefore can induce sinusoidal waveform, ambipolar back electromotive force, during the rotor continuous rotation, the flow direction of linkage is periodically-varied in the stator winding, realizes energy converting between mechanical.Because it is in fact a kind of New Magnetic Field Controlled resistance induction type magneto that the saliency that the stator and rotor tooth forms and the not reciprocity staggered characteristic of the stator and rotor number of teeth, magnetic flux are switched the permanent magnetism memory electrical machine.
Most critical be, the pulse winding of multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine is in open-circuit condition at ordinary times normal operation, provide separately air-gap field by Al-Ni-Co permanent magnet, avoided excitation loss, by apply pulse current produce magnetic field to Al-Ni-Co permanent magnet increase, degaussing, thereby provide air-gap field by the permanent magnet that possesses the new close level of magnetic.Because " memory " function of permanent magnet can realize the flexible controllability in motor gas-gap magnetic field by regulating impulse sense of current and size, and the output-constant operation scope when widening motor and moving as motor.
As shown in Figure 1, a kind of multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine of the present invention mainly comprises stationary part and rotor 2 parts.It is characterized in that stationary part comprises multiple tooth type stator core 1, Al-Ni-Co permanent magnet 3, the concentrated winding 4 of threephase armature and pulse winding 5; Rotor 2 is fixed in not on the magnetic rotating shaft 8, is salient pole type; Circumferentially consisted of by " V " type silicon steel sheet magnetic conductive iron 1, trapezoidal permanent magnet 3 successively on casing 9 interior fixing stationary parts edges; Leave inverted trapezoidal cavity 6 between stator yoke section and the permanent magnet 3, be used for placing pulse winding 5; Be provided with magnetic conduction bridge 7 between pulse winding cavity 6 and casing.Shown in accompanying drawing 1 was concrete, stator had 6 armature tooths that are wound with armature winding, 6 pulse winding cavities 6.
Be provided with magnetic conduction bridge construction 7 between above-mentioned inverted trapezoidal pulse winding cavity 6 and casing, the magnetic conduction bridge is with an integral body with the stator core of " V " type, for the pulse magnetic potential magnetic line of force provides corresponding parallel circuits, so that this invention adopts less pulse umber of turn just can guarantee that pulse current has preferably online adjustable magnetic effect to Al-Ni-Co permanent magnet 3.
Stator poles comprises stator poles main part and the some armature tooths that extend internally from the stator poles main part; Specifically, the conducting magnet core limit of the permanent magnet 3 that circumferentially magnetizes in the edge and the stator poles main part of " V " type stator silicon steel sheet 1 consists of the second armature tooth 1.2, and the second armature tooth 1.2 both sides are respectively equipped with independently the first armature tooth 1.1; And pulse winding 5 is wrapped in the stator yoke part of " V " type stator core, and the head and the tail series connection forms the monophasic pulses if winding successively.Shown in accompanying drawing 1 was concrete, stator had 6 armature tooths that are wound with armature winding, 6 pulse winding cavities 6.
Be the f three-phase voltage by giving threephase armature winding loading frequency, in the threephase armature winding, flow through the three-phase current that frequency is f, so the rotation speed n=60f/p of motor (p is the motor number of pole-pairs) then can be applied to the voltage swing of threephase armature winding and the rotating speed that frequency is come regulating electric machine by control.And single-phase pulse winding directly connects DC power supply, according to the needs paired pulses winding of motor operation load transient state forward or reverse pulse current to the Al-Ni-Co permanent magnet of motor fill, demagnetizing effect, thereby affect the air-gap field of motor, realize the fully controlled of motor magnetic flux.
Because what pulse winding 5 applied is the transient current pulse, produces a transient magnetic field, so the pulse magnetic potential can obviously not affect air-gap field, air-gap field is then mainly provided by Al-Ni-Co permanent magnet 3.Can suitably choose the radial thickness of magnetic conduction bridge 7 according to required adjustable magnetic coefficient in the practical application, to reach the optimization on-line control of air-gap field.
The above only is preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned execution mode; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (6)
1. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine comprises casing, is housed in stator in the casing, rotor (2) and magnetic rotating shaft (8) not that it is characterized in that: stator (1) is located at rotor (2) outside; Rotor (2) is fixed in not on the magnetic rotating shaft (8), is salient pole type;
Stator comprises stator core (1), permanent magnet (3), threephase armature winding (4) and pulse winding (5); Stator core (1) comprises some stator yoke and the stator poles of giving prominence to the stator core center position from stator yoke;
Threephase armature concentrates winding (4) to be wrapped on the stator poles;
Permanent magnet (3) is embedded in the stator poles, and at permanent magnet (3) and be not provided with cavity (6) between the magnetic rotating shaft (8), pulse winding (5) is arranged in this cavity (6); Be provided with magnetic conduction bridge (7) between pulse winding (5) and casing.
2. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine according to claim 1, it is characterized in that: " V " type that is shaped as of stator core (1), material is silicon steel sheet.
3. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine according to claim 1, it is characterized in that: stator poles comprises stator poles main part and the some armature tooths that extend internally from the stator poles main part;
Wherein, the second armature tooth (1.2) is made of the conducting magnet core limit of the stator poles main part of permanent magnet (3) and " V " type stator silicon steel sheet (1), and the second armature tooth (1.2) both sides are respectively equipped with independently the first armature tooth (1.1).
4. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine according to claim 3, it is characterized in that: pulse winding (5) is concentrated winding, pulse winding (5) is wrapped on the stator yoke of stator core (1), pulse winding (5) successively head and the tail series connection forms the monophasic pulses if winding, and the pulse current direction forms and is alternately distributed.
5. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine according to claim 1, it is characterized in that: described permanent magnet (3) is the Al-Ni-Co permanent magnet material of trapezium structure, permanent magnet (3) is along circumference cutting orientation magnetizing, the N utmost point and S utmost point alternative arrangement, and is shaped as trapezium structure.
6. multiple tooth Magneticflux-switching type permanent magnetism memory electrical machine according to claim 1, it is characterized in that: described cavity (6) is inverted trapezoidal structure, and two base angles become level and smooth fillet shape.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490532A (en) * | 2013-09-18 | 2014-01-01 | 东南大学 | Fault-tolerant type stator segmentation flux switching memory motor |
| CN103501063A (en) * | 2013-09-18 | 2014-01-08 | 东南大学 | Multi-tooth permanent magnet embedded magnetic flow switching type memory motor |
| CN104113150A (en) * | 2014-07-18 | 2014-10-22 | 西安交通大学 | Combined type multi-tooth stator iron hybrid field switch flux motor |
| CN104113181A (en) * | 2014-07-18 | 2014-10-22 | 西安交通大学 | Hybrid field switch flux linear motor used for axial feeding |
| FR3011142A1 (en) * | 2013-09-23 | 2015-03-27 | Renault Sa | IMPROVED STATOR FOR PERMANENT MAGNET MACHINE WITH FLOW SWITCHING |
| CN105871092A (en) * | 2015-02-09 | 2016-08-17 | 株式会社岛野 | Generator |
| CN106451834A (en) * | 2016-09-30 | 2017-02-22 | 江苏大学 | Hybrid excitation type magnetic flux switching motor with K-shaped stator cores |
| CN108347145A (en) * | 2018-04-20 | 2018-07-31 | 南京信息工程大学 | A kind of bimorph transducer hybrid permanent magnet memory electrical machine |
| CN109802501A (en) * | 2019-02-19 | 2019-05-24 | 华中科技大学 | A kind of divided stator carnassial tooth flux switching motor |
| CN109818471A (en) * | 2019-02-01 | 2019-05-28 | 江苏大学 | A kind of double air gaps magnetic field modulation magneto |
| CN111769708A (en) * | 2020-06-09 | 2020-10-13 | 淮阴工学院 | Multi-tooth structure magnetism-gathering type stator double-partition motor |
| CN111799972A (en) * | 2020-06-09 | 2020-10-20 | 淮阴工学院 | Stator short-distance separation type motor structure |
| CN112923125A (en) * | 2021-02-05 | 2021-06-08 | 广西科技大学 | Mixed ring enhanced magnetorheological valve device |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103501063A (en) * | 2013-09-18 | 2014-01-08 | 东南大学 | Multi-tooth permanent magnet embedded magnetic flow switching type memory motor |
| CN103490532B (en) * | 2013-09-18 | 2015-11-18 | 东南大学 | A kind of error-tolerance type stator partition type Magneticflux-switching type memory electrical machine |
| CN103490532A (en) * | 2013-09-18 | 2014-01-01 | 东南大学 | Fault-tolerant type stator segmentation flux switching memory motor |
| FR3011142A1 (en) * | 2013-09-23 | 2015-03-27 | Renault Sa | IMPROVED STATOR FOR PERMANENT MAGNET MACHINE WITH FLOW SWITCHING |
| CN104113181B (en) * | 2014-07-18 | 2016-08-24 | 西安交通大学 | A kind of composite excitation switch flux linear motor for axial feed |
| CN104113150A (en) * | 2014-07-18 | 2014-10-22 | 西安交通大学 | Combined type multi-tooth stator iron hybrid field switch flux motor |
| CN104113181A (en) * | 2014-07-18 | 2014-10-22 | 西安交通大学 | Hybrid field switch flux linear motor used for axial feeding |
| CN105871092B (en) * | 2015-02-09 | 2019-07-05 | 株式会社岛野 | Generator |
| CN105871092A (en) * | 2015-02-09 | 2016-08-17 | 株式会社岛野 | Generator |
| CN106451834A (en) * | 2016-09-30 | 2017-02-22 | 江苏大学 | Hybrid excitation type magnetic flux switching motor with K-shaped stator cores |
| CN108347145A (en) * | 2018-04-20 | 2018-07-31 | 南京信息工程大学 | A kind of bimorph transducer hybrid permanent magnet memory electrical machine |
| CN109818471A (en) * | 2019-02-01 | 2019-05-28 | 江苏大学 | A kind of double air gaps magnetic field modulation magneto |
| CN109818471B (en) * | 2019-02-01 | 2020-12-18 | 江苏大学 | Double-air-gap magnetic field modulation permanent magnet motor |
| CN109802501A (en) * | 2019-02-19 | 2019-05-24 | 华中科技大学 | A kind of divided stator carnassial tooth flux switching motor |
| CN111769708A (en) * | 2020-06-09 | 2020-10-13 | 淮阴工学院 | Multi-tooth structure magnetism-gathering type stator double-partition motor |
| CN111799972A (en) * | 2020-06-09 | 2020-10-20 | 淮阴工学院 | Stator short-distance separation type motor structure |
| CN112923125A (en) * | 2021-02-05 | 2021-06-08 | 广西科技大学 | Mixed ring enhanced magnetorheological valve device |
| CN112923125B (en) * | 2021-02-05 | 2022-05-27 | 广西科技大学 | Mixed ring enhanced magnetorheological valve device |
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