CN105978199B - Permanent magnetism vernier motor - Google Patents

Permanent magnetism vernier motor Download PDF

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Publication number
CN105978199B
CN105978199B CN201610547957.7A CN201610547957A CN105978199B CN 105978199 B CN105978199 B CN 105978199B CN 201610547957 A CN201610547957 A CN 201610547957A CN 105978199 B CN105978199 B CN 105978199B
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Prior art keywords
winding
stator
magnet
rotor
motor
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CN105978199A (en
Inventor
李文龙
李坚强
明仲
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Shenzhen University
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Shenzhen University
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/16Stator cores with slots for windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings

Abstract

The present invention is suitable for electric machine structure technical field, disclose permanent magnetism vernier motor, it includes stator and the rotor that coordinates with stator rotation, stator includes stator core and the stator winding on stator core, rotor includes rotor core and the permanent magnet on rotor core, stator winding includes first set winding and second set of winding, and first set winding and second set of winding are run independently of each other, and the number of pole-pairs of first set winding is more than or less than the number of pole-pairs of second set of winding.The present invention makes full use of harmonic field useful in air gap by adding a set of winding on the basis of existing single stator core, single stator winding, in this way, under the premise of not increasing electric machine structure complexity, effectively increase the space availability ratio of motor and the utilization rate of motor material, and then conducive to the torque and power grade for promoting motor, and effectively enhance the system operation reliability and fault-tolerant operation ability of motor.

Description

Permanent magnetism vernier motor
Technical field
The invention belongs to motor field more particularly to permanent magnetism vernier motors.
Background technology
Permanent magnetism vernier motor directly drives type motor as a kind of low speed high torque, in electric vehicle, wind-power electricity generation, sea The new energy fields such as wave power generation have a wide range of applications.Permanent magnetism vernier motor generally comprises rotor core, permanent magnet, stator Iron core and stator winding, stator core are equipped with adjustable magnetic block, and there is adjustable magnetic block magnetic field modulation effect, permanent magnetism vernier motor to utilize tune High-speed magnetic field after system realizes the high speed design of armature.
However, there are still shortcomings in a particular application for existing permanent magnetism vernier motor, embody as follows:It is existing forever The motor of generally single stator core, single stator winding in magnetic vernier motor, in this way it is difficult to make full use of rich present in air gap Rich harmonic field, so that the torque density of motor is not promoted fully, motor space and material do not obtain fully It utilizes.Specifically, in the vernier magneto of existing single stator core, single stator winding, most number of pole-pairs magnetic fields of rotor, warp The adjustable magnetic effect for crossing stator tooth, is converted into a small number of number of pole-pairs magnetic fields of stator, to realize the high speed design of armature;But A large amount of harmonic flux can be caused not utilized in this way, and then limit the further promotion of motor torque density.In addition, using The set-up mode of single stator core, single stator winding, motor cannot fault-tolerant fortune well under stator winding sections malfunction Row, to seriously affect the continuous reliability service of electric vehicle and generation of electricity by new energy.
Invention content
It is an object of the invention to overcome at least one shortcoming of the above-mentioned prior art, permanent magnetism vernier electricity is provided Machine, which solve that there are air-gap harmonic magnetic field utilization rates in existing permanent magnetism vernier motor is low, torque density is low, motor space utilization Rate is low, motor material utilization rate is low, the technical problem of motor fault-tolerant operational reliability difference.
In order to achieve the above objectives, the technical solution adopted by the present invention is:Permanent magnetism vernier motor, including stator and with it is described fixed The rotor that son is rotatably assorted, the stator include stator core and the stator winding on the stator core, the rotor Permanent magnet including rotor core and on the rotor core, the stator winding include first set winding and second set around Group, the first set winding and second set of winding are run independently of each other, and the number of pole-pairs of the first set winding be more than or Less than the number of pole-pairs of second set of winding.
Optionally, the stator core has several notches circumferentially spaced and close to the rotor, definition The number of pole-pairs of the first set winding is P, and the number of pole-pairs for defining second set of winding is Npm, the quantity for defining the notch is Ns, then there is P=| Ns±Npm|。
Optionally, the number of pole-pairs of second set of winding is equal with the number of pole-pairs of the rotor.
Optionally, the stator core includes stator yoke and several circumferentially spaced determine in the stator yoke Sub- tooth, each stator tooth include tooth neck and tooth boots, all form a main line slot between tooth neck described in arbitrary neighborhood two, often It is all convexly equipped with several adjustable magnetic blocks on a tooth boots, a notch is all formed between adjustable magnetic block described in arbitrary neighborhood two, it is described First set winding is distributed in each main line slot, and second set of winding is distributed in each notch.
Optionally, the stator core includes stator yoke and several are circumferentially spaced in convex in the stator yoke Tooth, the double wedge are the adjustable magnetic block, and the first set winding and second set of winding are distributed in each notch.
Optionally, the double wedge be rectangular teeth block, the notch be rectangular aperture slot, and the width of the double wedge with it is described The width of notch is suitable.
Optionally, the stator is located at the inside of the rotor;Alternatively, the stator is located at the outside of the rotor.
Optionally, the permanent magnet includes that several first magnets and several polarity are opposite with first magnet polarity The second magnet, each first magnet and each second magnet is circumferentially alternating is distributed on the rotor core.
Optionally, each first magnet and each second magnet attach the surface for being fixed on the rotor core;Or Person, each first magnet and each second magnet are inserted and fixed in the rotor core;Alternatively, each first magnet It is built in the rotor core with each second magnet.
Optionally, several circumferentially spaced salient poles are convexly equipped on the rotor core, the permanent magnet includes Several are respectively embedded into the third magnet being installed between each adjacent two salient pole.
Permanent magnetism vernier motor provided by the invention, can be run independently of each other by the way that two sets are arranged on a stator core, And the different winding of number of pole-pairs, that is, adding a set of winding on the basis of existing single stator core, single stator winding Harmonic field useful in air gap is made full use of, in this way, under the premise of not increasing electric machine structure complexity, is effectively increased The space availability ratio of motor and the utilization rate (the especially utilization rate of permanent magnet) of motor material, and then turn conducive to promotion motor Square and power grade.Further, since the double winding on stator core is can to run independently of each other and number of pole-pairs is to differ , therefore, effectively enhance the system operation reliability and fault-tolerant operation ability of motor.
Description of the drawings
Fig. 1 is the structural schematic diagram for the external rotor permanent magnet vernier motor that the embodiment of the present invention one provides;
Fig. 2 is the structural schematic diagram of stator core in the external rotor permanent magnet vernier motor that the embodiment of the present invention one provides;
Fig. 3 is the structural schematic diagram of stator core in the internal rotor permanent-magnetic vernier motor that the embodiment of the present invention one provides;
Fig. 4 is the deployed configuration schematic diagram for the rotor that the embodiment of the present invention one provides;
Fig. 5 is the structural schematic diagram of stator core in external rotor permanent magnet vernier motor provided by Embodiment 2 of the present invention;
Fig. 6 is the structural schematic diagram of stator core in internal rotor permanent-magnetic vernier motor provided by Embodiment 2 of the present invention;
Fig. 7 is the deployed configuration schematic diagram for the rotor that the embodiment of the present invention three provides;
Fig. 8 is the deployed configuration schematic diagram for the rotor that the embodiment of the present invention four provides;
Fig. 9 is the deployed configuration schematic diagram for the rotor that the embodiment of the present invention five provides.
Arrow in Fig. 4, Fig. 7, Fig. 8 and Fig. 9 on permanent magnet indicates the magnetizing direction of magnet.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
It should be noted that when element is referred to as on " being fixed on " or " being set to " another element, it can be direct On another element or it may be simultaneously present centering elements.When an element is known as " connection " another element, it Can be directly connected to another element or may be simultaneously present centering elements.
Only it is each other relatively it should also be noted that, the orientation term such as left and right, upper and lower, top, bottom in following embodiment Concept or be reference with the normal operating condition of product, and should not be regarded as restrictive.
Embodiment one:
As shown in Figs 1-4, the embodiment of the present invention one provide permanent magnetism vernier motor, including stator 1 and with stator 1 rotation match The rotor 2 of conjunction, stator 1 include stator core 11 and the stator winding 12 on stator core 11, and rotor 2 includes rotor core 21 and the permanent magnet 22 on rotor core 21, stator winding 12 includes first set winding 121 and second set of winding 122, the A set of winding 121 and second set of winding 122 are run independently of each other, and the number of pole-pairs of first set winding 121 is more than or less than second The number of pole-pairs of winding 122 is covered, i.e. the number of pole-pairs of first set winding 121 and the number of pole-pairs of second set of winding 122 is unequal.First set Winding 121 and second set of winding 122 all can be single-phase winding or polyphase windings (such as three-phase windings).The embodiment of the present invention carries The permanent magnetism vernier motor of confession, it is specially a kind of in single stator core 11, the motor of bimorph transducer winding 12, that is, in existing list A set of winding is added to make full use of air gap (between rotor 2 and stator 1 on the basis of stator core 11, single stator winding 12 Gap) in useful harmonic field, to achieve the purpose that make full use of effective harmonic field in permanent magnetism vernier motor air gap, this Sample effectively increases the space availability ratio of motor and the utilization of motor material under the premise of not increasing electric machine structure complexity Rate (the especially utilization rate of permanent magnet 22), and then conducive to the torque and power grade for promoting motor.Further, since stator core Double winding on 11 be can run independently of each other and number of pole-pairs is different, therefore, effectively enhance the system operation of motor Reliability and fault-tolerant operation ability.
Preferably, stator core 11 has several notches 1101 circumferentially spaced and close to rotors 2, definition the The number of pole-pairs of a set of winding 121 is P, and the number of pole-pairs for defining second set of winding 122 is Npm, the quantity for defining notch 1101 is Ns, Then there is P=| Ns±Npm|.The quantity of notch 1101 can be according to Rational choices such as the number of phases of designed motor, rotating speed, modulation ratios.This Place, passes through 121 number of pole-pairs P of optimization design first set winding, second set of 122 number of pole-pairs N of windingpmWith 1101 quantity N of notchsBetween Relationship, in this way, the magnetic structure using motor farthest promotes effective harmonic field, and can inhibit not available Harmonic field, so that obtained harmonic field amplitude is optimal.
Preferably, the number of pole-pairs of second set of winding 122 is equal with the number of pole-pairs of rotor 2, in this way, conducive to motor is made full use of Useful harmonic field in air gap, to space availability ratio, stock utilization and the torque density conducive to raising motor.
Preferably, together referring to Fig.1 shown in -3, stator core 11 includes stator yoke 111 and several circumferentially spaced point The stator tooth 112 of cloth, each stator tooth 112 include tooth neck 1121 and tooth boots 1122, and stator yoke 111 is circumferentially closed ring-type Structure, stator tooth 112 is convexly equipped in the inside or outside of stator yoke 111, and tooth neck 1121 is located at stator yoke 111 and tooth boots 1122 Between, a main line slot 1102 is all formed between two tooth neck 1121 of arbitrary neighborhood, several are convexly equipped on each tooth boots 1122 Adjustable magnetic block 1123, adjustable magnetic block 1123 have magnetic field modulation effect, a notch are all formed between two adjustable magnetic block 1123 of arbitrary neighborhood 1101, first set winding 121 is distributed in each main line slot 1102, and second set of winding 122 is distributed in each notch 1101, first set Winding 121 and second set of winding 122 are radial in inside and outside distribution along stator core 11.The quantity of notch 1101 and adjustable magnetic block 1123 Quantity it is equal, the quantity of main line slot 1102 is equal with the quantity of tooth neck 1121.Herein, stator 1 is cracked polar type stator structure, existing Have and a set of winding is only set in main line slot 1102 in cracked polar type stator structure, is made using the magnetic field modulation of adjustable magnetic block 1123 With most number of pole-pairs magnetic fields of rotor 2 can be converted in a small number of number of pole-pairs magnetic fields of stator 1, to realize that the high speed of armature is set Meter;It is abundant to add second set of winding 122 on the basis of existing cracked polar type stator structure in notch 1101 for the present embodiment Using the useful harmonic field in air gap, to which the torque density of motor can be improved, and the fault-tolerant operation of motor can be effectively improved Ability.
Specifically, since slot space is limited, therefore, in order to make full use of slot space, the conducting wire of stator winding 12 can be carried out Optimization design is so that it meets groove shape, and reduces slot space waste, raising slot utilization rate using rectangular lines scheme.
Specifically, together referring to Figures 1 and 2 shown in, permanent magnetism vernier motor provided in this embodiment can be outer rotor 2, interior The structure of stator 1, i.e. stator 1 are located at the inside of rotor 2, at this point, notch 1101 is radially disposed in main line slot along stator core 11 1102 outside, second set of winding 122 is along the outside for being radially disposed in first set winding 121 of stator core 11;Alternatively, with reference to figure Shown in 3, permanent magnetism vernier motor provided in this embodiment is alternatively the structure of internal rotor 2, external stator 1, i.e. stator 1 is located at rotor 2 Outside, at this point, notch 1101, along the inside for being radially disposed in main line slot 1102 of stator core 11, second set of winding 122 is along fixed The inside for being radially disposed in first set winding 121 of sub- iron core 11.
Preferably, together referring to Fig.1 with shown in Fig. 4, permanent magnet 22 includes several first magnets 221 and several polarity With 221 opposite polarity second magnet 222 of the first magnet, the polarity of the first magnet 221 and the second magnet 222 is respectively the poles N and S Pole, each first magnet 221 and each second magnet 222 is circumferentially alternating is distributed on rotor core 21.First magnet 221 and second Magnet 222 can be formed along motor radial magnetizing, and herein, the first magnet 221 and the second magnet 222 are handed over along motor gas-gap circumferencial direction It alternately magnetizes structure for N-S is arranged in, in this way, may make magnetic flux density in air gap close to Sine distribution.
Preferably, each first magnet 221 and each second magnet 222 is circumferentially spaced is alternately distributed on rotor core 21, In this way, magnetizing respectively conducive to the first magnet 221 and the second magnet 222.
Preferably, the pole span between the first magnet 221 and the second magnet 222 is slightly larger than the width of adjustable magnetic block 1123, in this way, Adjustable magnetic effect can preferably be played.
Preferably, with reference to shown in Fig. 4, rotor core 21 is fixed in each first magnet 221 and the attaching of each second magnet 222 Surface, in this way, can effectively realize that the installation of the first magnet 221 and the second magnet 222 on rotor core 21 is fixed, and each first Magnet 221 and each second magnet 222 are all the convex surfaces for being exposed to rotor core 21.Specifically, when motor is outer rotor 2, default When the structure of son 1, each first magnet 221 and each second magnet 222 attach the inner circumferential surface for being fixed on rotor core 21;And work as When motor is the structure of internal rotor 2, external stator 1, rotor core is fixed in each first magnet 221 and the attaching of each second magnet 222 21 external peripheral surface.In the present embodiment, each first magnet 221 and each second magnet 222 attach mode using surface and are fixed on On rotor core 21, mounting structure is simple, and mounting structure, installation operation need not be all arranged in rotor core 21 and permanent magnet 22 It is convenient, and conducive to the radial magnetizing of each first magnet 221 and each second magnet 222, to form circumferentially distributed N-S alternatings Magnet structure.
Preferably, stator core 11 and rotor core 21 permeability magnetic materials such as silicon steel sheet are respectively adopted along motor axial direction lamination and At simple in structure, easily manufactured.It of courses, in concrete application, magnetic conduction material can also be used in stator core 11 and rotor core 21 Expect direct integrally casting shaping.
Permanent magnetism vernier motor provided in this embodiment, specially a kind of single stator core 11, doublewound permanent magnetism vernier electricity Machine, the two-fold advantage with permanent magnetism vernier motor and double-winding motor according to actual needs, can be by excellent in concrete application Change distribution 1 slot space of stator to install double winding respectively, the permanent magnetism vernier motor of the present embodiment is designed to that high torque (HT) is close Spend motor or high fault-tolerant motor.Different air-gap harmonic magnetic fields is corresponded to by double winding in this present embodiment, therefore, effectively The utilization rate for improving motor gas-gap harmonic field reduces the leakage field of motor, improves torque density, the motor space of motor Utilization rate and motor material utilization rate.
Embodiment two:
As shown in Figure 5 and Figure 6, permanent magnetism vernier motor provided in this embodiment, with being in for the main difference of embodiment one In:Stator 1 in embodiment one is cracked polar type stator structure, and first set winding 121 and second set of winding 122 are along stator core 11 Radial is in inside and outside distribution;And the stator 1 in the present embodiment is open-slot-type stator structure, and specifically, the stator iron of the present embodiment Core 11 includes stator yoke 111 and several are circumferentially spaced in the double wedge 113 in stator yoke 111, and stator yoke 111 is circumferential Closed cyclic structure, double wedge 113 are convexly equipped in the inside or outside of stator yoke 111, all shape between two double wedge 113 of arbitrary neighborhood At a notch 1101, first set winding 121 and second set of winding 122 are distributed in each notch 1101.In the present embodiment, first Winding 121 and the identical slot space of second set of 122 joint distribution of winding are covered, only first set winding 121 and second set of winding 122 The winding of the winding of corresponding most numbers of pole-pairs and a small number of numbers of pole-pairs respectively can be according to designed motor performance side in concrete application The different slot spaces for carrying out reasonable distribution first set winding 121 and second set of winding 122 of emphasis, such as:For stressing to need The motor of high torque density, a set of in double winding can be designed as centralized winding, it is another set of be designed as distributed winding, And the allocation space of centralized winding is more, the allocation space of distributed winding is few;The electricity of output high-torque is needed for the short time Machine, a set of in double winding can be designed as main winding, it is another set of be designed as auxiliary winding, and the slot space of main winding is installed It is bigger than auxiliary winding slot space;For the occasion for needing fault-tolerant operation, double winding can divide slot space equally.It is provided in this embodiment Permanent magnetism vernier motor, and in notch 1101 add second set of winding 122 to make full use of the useful harmonic field in air gap, To which space availability ratio, stock utilization, torque density and the fault-tolerant operation ability of motor also can be improved.
Preferably, double wedge 113 is rectangular teeth block, and notch 1101 is rectangular aperture slot, and the width and notch of double wedge 113 1101 width is suitable, i.e., double wedge 113 and notch 1101 are wide structure.The width of double wedge 113 refers specifically to, and double wedge 113 is fixed The width of projector distance on 11 circumferencial direction of sub- iron core, notch 1101 refers specifically to notch 1101 in 11 circumferencial direction of stator core On projector distance.Each double wedge 113 can all form a protrusion polar body structure, magnetic field modulation effect can be played, so as to be formed The harmonic field of air gap.
Other than above-mentioned difference, the other structures of permanent magnetism vernier motor provided in this embodiment all can refer to embodiment one It optimizes, this will not be detailed here.
Embodiment three:
As shown in fig. 7, permanent magnetism vernier motor provided in this embodiment, with embodiment one, the main difference of embodiment two it It is in different with the mounting means of the second magnet 222 in the first magnet 221.Specifically, in embodiment one and embodiment two, each One magnet 221 and each second magnet 222 attach the surface for being fixed on rotor core 21, each first magnet 221 and each second magnet 222 be all the convex surface for being exposed to rotor core 21;And in the present embodiment, each first magnet 221 and each second magnet 222 are inserted into admittedly Due in rotor core 21, the surface of rotor core 21 is equipped with several for supplying each first magnet 221 and each second magnetic respectively Body 222 is inserted into fixed mounting groove, and all only there are one faces and rotor core 21 for each first magnet 221 and each second magnet 222 Flush.Specifically, when motor is the structure of outer rotor 2, inner stator 1, each mounting groove is circumferentially spaced recessed in rotor The inner surface of iron core 21, each first magnet 221 and each second magnet 222 are inserted and fixed to each mounting groove of rotor core 21 respectively Interior, each first magnet 221 and each second magnet 222 all have the surface concordant with 21 inner surface of rotor core;And when motor is Internal rotor 2, external stator 1 structure when, each mounting groove is circumferentially spaced recessed in the outer surface of rotor core 21, each first magnet 221 and each second magnet 222 be inserted and fixed to respectively in each mounting groove of rotor core 21, each first magnet 221 and each second Magnet 222 all has the surface with 21 flush with outer surface of rotor core.Using the first magnet 221 and the second magnet in the present embodiment 222 mounting means also can effectively realize that the first magnet 221 and the installation of the second magnet 222 are fixed, and can be formed and circumferentially be divided The N-S alternate magnets structures of cloth.
Other than above-mentioned difference, the other structures of permanent magnetism vernier motor provided in this embodiment all can refer to embodiment One, embodiment two optimizes, and this will not be detailed here.
Example IV:
As shown in figure 8, permanent magnetism vernier motor provided in this embodiment, the master with embodiment one, embodiment two, embodiment three It wants the difference is that the first magnet 221 is different with the mounting means of the second magnet 222.Specifically, embodiment one and embodiment In two, each first magnet 221 and each second magnet 222 attach the surface for being fixed on rotor core 21, each first magnet 221 and each Second magnet 222 is all the convex surface for being exposed to rotor core 21;In embodiment three, each first magnet 221 and each second magnet 222 It is inserted and fixed in rotor core 21, all only there are one faces and rotor core 21 for each first magnet 221 and each second magnet 222 Flush;And in the present embodiment, each first magnet 221 and each second magnet 222 are built in rotor core 21, each first magnetic Body 221 and each second magnet 222 are completely embedded into rotor core 21, i.e., each first magnet 221 and each second magnet 222 all do not have There is the surface with 21 flush of rotor core.Using the installation side of the first magnet 221 and the second magnet 222 in the present embodiment Formula also can effectively realize that the first magnet 221 and the installation of the second magnet 222 are fixed, and can form circumferentially distributed N-S alternatings Magnet structure.
Other than above-mentioned difference, the other structures of permanent magnetism vernier motor provided in this embodiment all can refer to embodiment One, embodiment two optimizes, and this will not be detailed here.
Embodiment five:
As shown in figure 9, permanent magnetism vernier motor provided in this embodiment, with embodiment one, embodiment two, embodiment three, reality The main difference place for applying example four is that the set-up mode of permanent magnet 22 is different.Specifically, embodiment one, embodiment two, implementation In example three and example IV, permanent magnet 22 all includes 221 and second magnet 222 of opposite polarity first magnet;And the present embodiment In, permanent magnet 22 is only included with same polar third magnet 223.Specifically, in the present embodiment, projection on rotor core 21 There are several circumferentially spaced salient poles 211, permanent magnet 22 is respectively embedded into including several is installed on each adjacent two salient pole Third magnet 223 between 211.The card of installation is caught in there are one being formed between two salient pole 211 of arbitrary neighborhood for third magnet 223 Slot.After the insertion of third magnet 223 is installed on rotor core 21, each salient pole 211 can be magnetized to polarity and the by third magnet 223 Three magnets, 223 opposite polarity magnet, the i.e. polarity of third magnet 223 and rotor core 21 are respectively the poles N and the poles S, in this way, can It is alternately distributed using the salient pole 211 on rotor core 21 to realize the circumferential direction with third magnet 223, in this way, can both realize permanent magnetism Installation of the body 22 on rotor core 21 is fixed, and can form circumferentially distributed N-S alternate magnets structures.
Other than above-mentioned difference, the other structures of permanent magnetism vernier motor provided in this embodiment all can refer to embodiment One, embodiment two optimizes, and this will not be detailed here.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention Any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (9)

1. permanent magnetism vernier motor, including stator and the rotor with stator rotation cooperation, the stator include stator core and Stator winding on the stator core, the rotor include rotor core and the permanent magnetism on the rotor core Body, it is characterised in that:The stator winding includes first set winding and second set of winding, the first set winding and described second Set winding is run independently of each other, and the number of pole-pairs of the first set winding is more than or less than the number of pole-pairs of second set of winding, The stator core has several notches circumferentially spaced and close to the rotor, defines the first set winding Number of pole-pairs is P, and the number of pole-pairs for defining second set of winding is Npm, the quantity for defining the notch is Ns, then there is P=| Ns± Npm|。
2. permanent magnetism vernier motor as described in claim 1, it is characterised in that:The number of pole-pairs of second set of winding with described turn The number of pole-pairs of son is equal.
3. permanent magnetism vernier motor as claimed in claim 2, it is characterised in that:The stator core includes stator yoke and several It is circumferentially spaced in the stator tooth in the stator yoke, each stator tooth includes tooth neck and tooth boots, arbitrary neighborhood A main line slot is all formed between the two tooth necks, is convexly equipped with several adjustable magnetic blocks on each tooth boots, described in arbitrary neighborhood two A notch is all formed between adjustable magnetic block, the first set winding is distributed in each main line slot, described second set around Group is distributed in each notch.
4. permanent magnetism vernier motor as claimed in claim 2, it is characterised in that:The stator core includes stator yoke and several It is circumferentially spaced all to form a notch between double wedge described in arbitrary neighborhood two in the double wedge in the stator yoke, The first set winding and second set of winding are distributed in each notch.
5. permanent magnetism vernier motor as claimed in claim 4, it is characterised in that:The double wedge is rectangular teeth block, and the notch is Rectangular aperture slot, and the width of the double wedge is suitable with the width of the notch.
6. permanent magnetism vernier motor as claimed in claim 1 or 2, it is characterised in that:The stator is located at the inside of the rotor; Alternatively, the stator is located at the outside of the rotor.
7. permanent magnetism vernier motor as claimed in claim 1 or 2, it is characterised in that:The permanent magnet includes several first magnetic Body and several polarity second magnet opposite with first magnet polarity, each first magnet and each second magnet It is circumferentially alternating to be distributed on the rotor core.
8. permanent magnetism vernier motor as claimed in claim 7, it is characterised in that:Each first magnet and each second magnet Attach the surface for being fixed on the rotor core;Alternatively, each first magnet and each second magnet are inserted and fixed to institute It states in rotor core;Alternatively, each first magnet and each second magnet are built in the rotor core.
9. permanent magnetism vernier motor as claimed in claim 1 or 2, it is characterised in that:It is convexly equipped with several on the rotor core Circumferentially spaced salient pole, the permanent magnet include that several are respectively embedded into and are installed between each adjacent two salient pole Third magnet.
CN201610547957.7A 2016-07-12 2016-07-12 Permanent magnetism vernier motor Active CN105978199B (en)

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CN107425626B (en) * 2017-09-01 2019-10-08 华中科技大学 A kind of built-in tangential excitation vernier magneto
CN108336837A (en) * 2018-02-26 2018-07-27 江苏大学 A kind of composite excitation direct driving motor
CN109104014B (en) * 2018-09-21 2020-06-26 江苏大学 Four-phase double-winding vernier motor
CN109962551B (en) * 2019-02-19 2020-09-08 华中科技大学 Double-winding permanent magnet fault-tolerant motor
CN112688454A (en) * 2020-12-15 2021-04-20 大连海事大学 Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor

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