CN103647423A - Stator and rotor permanent magnet-type vernier motor - Google Patents

Stator and rotor permanent magnet-type vernier motor Download PDF

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Publication number
CN103647423A
CN103647423A CN201310615118.0A CN201310615118A CN103647423A CN 103647423 A CN103647423 A CN 103647423A CN 201310615118 A CN201310615118 A CN 201310615118A CN 103647423 A CN103647423 A CN 103647423A
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CN
China
Prior art keywords
rotor
stator
tooth
permanent magnet
air gap
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Pending
Application number
CN201310615118.0A
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Chinese (zh)
Inventor
赵文祥
吉敬华
朱纪洪
赵建兴
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Jiangsu University
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Jiangsu University
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Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to CN201310615118.0A priority Critical patent/CN103647423A/en
Publication of CN103647423A publication Critical patent/CN103647423A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a stator and rotor permanent magnet-type vernier motor. The vernier motor includes a stator and a rotor; an air gap is left between the rotor and the stator; the rotor comprises rotor teeth, a rotor yoke and rotor slots; one side of each rotor tooth, which directly faces the air gap, is a trapezoid; radially-magnetized rotor permanent magnets of which the polarities consistently point to the direction of the air gap are embedded in the rotor slots; one end of the stator, which is adjacent to the air gap, is slotted, such that stator teeth and stator slots can be formed; windings are arranged in the stator slots; the tooth end of each stator tooth is slotted, such that virtual teeth and virtual slots can be formed; the virtual teeth is one more than the virtual slots; and permanent magnet unit structures are embedded in the virtual slots. Through the mutual cooperation between the permanent magnets, magnetic flux is provided by the permanent magnets on the stator and the rotor simultaneously under a no-load situation, and therefore, leakage magnetic flux can be effectively reduced; flux density in a magnetic path can be increased; back electromotive forces in the windings can be improved; and output torque and power density can be increased.

Description

A kind of stator/rotor permanent magnet type vernier motor
Technical field
The motor or the generator that the present invention relates to a kind of high power density, belong to magneto field.
Background technology
Therefore vernier motor has the feature of low speed high torque, has good application scenario as fields such as track traffic, Ship Propeling, food processing and electric automobiles in a lot of occasions.Due to the invariablenes turning speed in the situation that, the torque of motor is relevant with unloaded back electromotive force size, and for conventional motors, the number of pole-pairs of stator and rotor is identical, increase number of poles and can reduce in proportion stator magnetic linkage, therefore can not improve unloaded back electromotive force by increasing number of poles.And that the topmost feature of vernier motor is the number of pole-pairs of stator and rotor is different, generally the number of pole-pairs of stator is less, and the number of pole-pairs of rotor is more, improves the frequency of stator magnetic linkage alternation by the modulating action in magnetic field, reach the object that increases unloaded back electromotive force, thereby increase power density.
Permanent magnetism vernier motor has rotor permanent magnet type motor and stator permanent magnetic type electric, all in stator increment, rotor increment and air gap, there is comparatively serious leakage field in this two classes motor, had a strong impact on the useful flux contact area of motor, make close the reducing of motor effective air gap magnetic, cause the back-emf of responding in winding greatly to reduce, thereby power density is lower.
Summary of the invention
The object of the invention is that leakage field is serious in order to solve in original permanent-magnet type vernier motor, in air gap magnetic close compared with back-emf in little, stator winding compared with little and cause the problem that power density is lower, a kind of stator/rotor permanent magnet type vernier motor is proposed.
The technical solution used in the present invention is: the present invention comprises stator and rotor, between stator and rotor, there is air gap, rotor comprises rotor tooth, rotor yoke and rotor, rotor tooth is trapezoidal over against air gap side, rotor is embedded with the rotor permanent magnet of the radial magnetizing of the sensing air gap direction that polarity is consistent, stator forms stator tooth and stator slot near air gap one end fluting, in stator slot, place winding, the increment fluting of each stator tooth forms empty tooth and empty groove, many one than empty groove number of virtual number of teeth, the embedded permanent magnet unit structure of empty groove.
Described rotor tooth is 0.2 ~ 0.5 near the width of air gap side and the ratio of rotor slot-pitch, and rotor tooth is 0.4 ~ 0.9 near the width of air gap side and rotor tooth near the ratio of the facewidth of rotor yoke.
Further, the radian of each empty groove is , the radian of each empty tooth is , / =0.8 ~ 1.1.
Permanent magnet unit structure consists of three radially highly consistent stator permanent magnets, and a middle stator permanent magnet volume is large, radial magnetizing and polar orientations air gap; Two stator permanent magnet small volumes of both sides and identical, tangentially relatively magnetize and fit tightly with a middle stator permanent magnet together with.
The present invention has the following advantages after adopting technique scheme:
(1) there is empty tooth in stator structure, has rotor tooth in rotor structure, thereby can reduce the consumption of total permanent magnet, thereby reduce the manufacturing cost of motor.
(2) by cooperatively interacting between permanent magnet, when unloaded, magnetic flux is provided with epitrochanterian permanent magnet by stator simultaneously, in addition, on stator, adopt permanent magnet unit, can effectively reduce the leakage field magnetic flux of tooth portion, epitrochanterian permanent magnet polarity all consistent and magnetizing direction points to air gap, can effectively reduce limit end leakage flux, thereby the magnetic that can effectively increase in magnetic circuit is close, thereby effectively improve the back-emf in winding, improve output torque and power density.
(3) armature winding is on stator, when electric current is excessive in due to failure cause motor, motor is owing to there being the not degaussing simultaneously of permanent magnet on air gap thereby stator rotor between rotor, motor still can some work until maintenance, thereby the unfailing performance of motor improves.
(4) electric machine structure of the present invention not only can be used as electric rotating machine, to linear electric motors, can be suitable for too.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is the radial structure schematic diagram of three-phase stator/rotor permanent magnet type vernier motor;
Fig. 2 is that the partial structurtes of Fig. 1 rotor 2 are launched enlarged drawing;
Fig. 3 is the enlarged diagram of the embedded magnet structure of the rotor of Fig. 1 rotor 2 unit;
Fig. 4 is the empty groove of local increment and the empty tooth distribution relation figure of stator 1 in Fig. 1;
Fig. 5 is the structure enlarged drawing of a stator tooth 12 in Fig. 1;
Fig. 6 is that three-phase stator/rotor permanent magnet type vernier motor winding is counter potential waveform figure while concentrating winding.
In figure: 1. stator; 2. rotor; 12. stator tooths; 14. stator slots; 15. increments; 19. grooves; 21. rotor tooths; 22. rotor yokes; 23. rotor; 31,32,33. stator permanent magnets; 34. rotor permanent magnets; 101. empty grooves; 102. empty teeth; 300. permanent magnet unit structures.
Embodiment
Referring to Fig. 1, the present invention is that a kind of three-phase stator/rotor permanent magnet type vernier motor is example, three-phase stator/rotor permanent magnet type vernier motor comprises stator 1 and rotor 2, the center grooved 19 of stator 1, be used for laying rotating shaft, between stator 1 and rotor 2, have air gap, the thickness of air gap is according to motor size and require institute to get.
Concrete structure and the proportionate relationship of rotor 2 are shown in Fig. 2, and rotor 2 comprises rotor tooth 21, rotor yoke 22 and rotor 23.The number of rotor tooth 21 becomes several mutually relevant with design of electrical motor.Rotor tooth 21 is trapezoidal shape, and rotor tooth 21 is trapezoidal over against air gap side, and rotor tooth 21 is near the width of air gap side s 1 with rotor slot-pitch t p ratio k 1 be 0.2 ~ 0.5, s 1 / t p =0.2 ~ 0.5, get 0.4 optimum.Rotor tooth 21 is near the width of air gap side s 1 with the facewidth of rotor tooth 21 near rotor yoke 22 s 2 ratio k 2 be 0.4 ~ 0.9, s 1 / s 2 =0.8, get 0.8 optimum.Rotor tooth depth and rotor yoke 22 positions can be optimized as required.Rotor tooth 21 is processed by silicon steel plate stacking or permeability magnetic material with the material of rotor yoke 22.
Referring to Fig. 3, at the rotor permanent magnet 34 of the consistent radial magnetizing of the embedded polarity of rotor 23, the magnetizing direction of rotor permanent magnet 34 is directions of pointing to air gap, and the polarity of the rotor permanent magnet 34 of radial magnetizing is consistent and the direction of magnetization is pointed to air gap.
Referring to Fig. 1 and Fig. 4, stator 1, near one end of air gap formation tooth slot structure of also slotting, forms stator tooth 12 and stator slot 14.Stator slot 14 is used for placing winding, and stator slot 14 can adopt various grooveds, chooses according to specific needs.Increment 15 flutings of each stator tooth 12, form empty tooth 102 and empty groove 101.Stator tooth 12 principal characters concentrate on stator increment 15.If the number of teeth of motor is n( n=1,2,3...... n), each increment 15 fluting forms empty tooth 102 and empty groove 101, empty tooth 102 numbers than empty groove 101 numbers many one, = + 1, the two ends of each stator tooth 12 are empty tooth 102.If the radian of each empty groove 101 is , the radian of each empty tooth 102 is , the ratio of empty groove 101 and the shared radian of empty tooth 102 kbe 0.8 ~ 1.1, / =0.8 ~ 1.1.
Again referring to Fig. 5, the embedded permanent magnet unit structure 300 of empty groove 101, permanent magnet unit structure 300 consists of three stator permanent magnets 31,32,33, and three stator permanent magnets 31,32,33 are radially highly all consistent, along the width of circumference, according to the needs of design of electrical motor, is optimized.Middle stator permanent magnet 32 radial magnetizings (seeing the arrow on Fig. 5), and volume is larger, polar orientations air gap.Two stator permanent magnets 31,33 of both sides are identical, together with fitting tightly with a middle stator permanent magnet 32, and two stator permanent magnets, 31,33 small volumes of both sides, tangentially relatively magnetize (seeing the arrow on Fig. 5), in the middle of being distributed in, magnet accumulating cap is played at the two ends of a stator permanent magnet 32.
Motor can be designed to single-phase or polyphase machine as required, every phase winding can adopt to be concentrated or distributed winding, what it may be noted that is exactly: if do not change other condition, only change the connected mode of winding, the back electromotive force that distributed winding produces will be far longer than concentrated winding.
Fig. 6 is that three-phase stator/rotor permanent magnet vernier motor winding is counter potential waveform figure while concentrating winding.The back electromotive force of armature winding when curve A 1 represents to only have rotor permanent magnet, the back electromotive force of armature winding when curve A 2 represents to only have stator permanent magnet, curve A 3 expression stator permanent magnets and rotor permanent magnet are made the back electromotive force of used time armature winding simultaneously, can see when same size, three-phase rotor permanent magnet type vernier motor back-emf (curve A 1) amplitude is 171V left and right, the back-emf of threephase stator permanent-magnet type vernier motor (curve A 2) amplitude is 121V, and back-emf (curve A 3) amplitude of three-phase stator/rotor permanent magnet type vernier motor can reach 238V, thereby power density can significantly improve.

Claims (4)

1. a stator/rotor permanent magnet type vernier motor, comprise stator (1) and rotor (2), between stator (1) and rotor (2), there is air gap, rotor (2) comprises rotor tooth (21), rotor yoke (22) and rotor (23), rotor tooth (21) is trapezoidal over against air gap side, it is characterized in that: rotor (23) is embedded with the rotor permanent magnet (34) of the radial magnetizing of the sensing air gap direction that polarity is consistent, stator (1) forms stator tooth (12) and stator slot (14) near air gap one end fluting, in stator slot (14), place winding, the increment fluting of each stator tooth (12) forms empty tooth (102) and empty groove (101), empty tooth (102) number is than many one of empty groove (101) number, empty groove (101) embedded permanent magnet unit structures (300).
2. a kind of stator/rotor permanent magnet type vernier motor according to claim 1, it is characterized in that: rotor tooth (21) is 0.2 ~ 0.5 near the width of air gap side and the ratio of rotor slot-pitch, rotor tooth (21) is 0.4 ~ 0.9 near the ratio of the width of air gap side and the facewidth of the close rotor yoke (22) of rotor tooth (21).
3. a kind of stator/rotor permanent magnet type vernier motor according to claim 1, is characterized in that: the radian of each empty groove (101) is , the radian of each empty tooth (102) is , / =0.8 ~ 1.1.
4. a kind of stator/rotor permanent magnet type vernier motor according to claim 1, it is characterized in that: permanent magnet unit structure (300) consists of radially highly consistent three stator permanent magnets (31,32,33), a middle stator permanent magnet (32) volume is large, radial magnetizing and polar orientations air gap; Two stator permanent magnets (31,33) small volume of both sides and identical, tangentially relatively magnetize and fit tightly with a middle stator permanent magnet (32) together with.
CN201310615118.0A 2013-11-28 2013-11-28 Stator and rotor permanent magnet-type vernier motor Pending CN103647423A (en)

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Application Number Priority Date Filing Date Title
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105162302A (en) * 2015-08-26 2015-12-16 江苏大学 Low-speed high-torque hybrid magnetic material permanent-magnet fault-tolerant motor
CN105743235A (en) * 2016-04-08 2016-07-06 江苏大学 High-torque low-loss permanent magnet fault-tolerant motor
CN105958762A (en) * 2016-04-26 2016-09-21 江苏大学 Novel high torque density high power factor fault tolerant permanent magnet vernier machine and its modulation method
CN106451979A (en) * 2015-08-05 2017-02-22 香港理工大学 Magnetic field modulation hybrid excitation motor
CN106712332A (en) * 2015-08-04 2017-05-24 香港理工大学 Wide-speed variable-speed motor with excitation direct-control alternating current-direct current shaft self decoupling
CN106787562A (en) * 2017-01-24 2017-05-31 东南大学 Alternately pole, mixed excitation directly drives vernier motor
CN106817003A (en) * 2016-11-11 2017-06-09 南方电机科技有限公司 A kind of motor of high torque and the robot including the motor
CN106849409A (en) * 2016-11-11 2017-06-13 南方电机科技有限公司 A kind of motor including HALBACH arrays and the equipment including the motor
CN105896865B (en) * 2016-06-16 2018-05-25 赵鑫堂 A kind of Permanent magnet DC adds can motor
CN108880182A (en) * 2018-07-16 2018-11-23 华中科技大学 A kind of division tooth modularization vernier permanent-magnetism linear motor
CN108900055A (en) * 2018-09-06 2018-11-27 无锡力必特自动化设备有限公司 A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101299567A (en) * 2008-06-17 2008-11-05 东南大学 Non-coupled electric stepless gear motor body topological structure
CN101978579A (en) * 2008-03-19 2011-02-16 霍加纳斯股份有限公司 Permanent magnet rotor with flux concentrating pole pieces
CN102130559A (en) * 2011-03-18 2011-07-20 江苏大学 Five-phase permanent magnet fault-tolerant motor with magnetic congregating effect for electric vehicle
CN102412700A (en) * 2011-12-27 2012-04-11 东南大学 Low-speed high-thrust-density linear motor
CN102420515A (en) * 2011-11-30 2012-04-18 哈尔滨工业大学 Magnetic field-modulated transverse flux multi-phase permanent magnet motor
CN102570754A (en) * 2012-01-17 2012-07-11 东南大学 Permanent-magnet cursor motor for realizing low speed and high torque
CN102882300A (en) * 2012-10-29 2013-01-16 哈尔滨工业大学 Multi-phase fault-tolerant permanent magnet synchronous motor rotor
CN103066719A (en) * 2012-12-14 2013-04-24 江苏大学 Magnetic gathering type stator permanent magnetic type vernier motor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101978579A (en) * 2008-03-19 2011-02-16 霍加纳斯股份有限公司 Permanent magnet rotor with flux concentrating pole pieces
CN101299567A (en) * 2008-06-17 2008-11-05 东南大学 Non-coupled electric stepless gear motor body topological structure
CN102130559A (en) * 2011-03-18 2011-07-20 江苏大学 Five-phase permanent magnet fault-tolerant motor with magnetic congregating effect for electric vehicle
CN102420515A (en) * 2011-11-30 2012-04-18 哈尔滨工业大学 Magnetic field-modulated transverse flux multi-phase permanent magnet motor
CN102412700A (en) * 2011-12-27 2012-04-11 东南大学 Low-speed high-thrust-density linear motor
CN102570754A (en) * 2012-01-17 2012-07-11 东南大学 Permanent-magnet cursor motor for realizing low speed and high torque
CN102882300A (en) * 2012-10-29 2013-01-16 哈尔滨工业大学 Multi-phase fault-tolerant permanent magnet synchronous motor rotor
CN103066719A (en) * 2012-12-14 2013-04-24 江苏大学 Magnetic gathering type stator permanent magnetic type vernier motor

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106712332B (en) * 2015-08-04 2019-03-15 香港理工大学 Excitation directly controls ac-dc axis from the wide revolving speed speed regulating motor of decoupling
CN106712332A (en) * 2015-08-04 2017-05-24 香港理工大学 Wide-speed variable-speed motor with excitation direct-control alternating current-direct current shaft self decoupling
CN106451979A (en) * 2015-08-05 2017-02-22 香港理工大学 Magnetic field modulation hybrid excitation motor
CN106451979B (en) * 2015-08-05 2019-11-19 香港理工大学 Magnetic-field modulation-type mixed excitation electric machine
CN105162302A (en) * 2015-08-26 2015-12-16 江苏大学 Low-speed high-torque hybrid magnetic material permanent-magnet fault-tolerant motor
CN105162302B (en) * 2015-08-26 2017-11-17 江苏大学 A kind of low speed high torque mixing magnetic material fault tolerant permanent magnet machine
CN105743235A (en) * 2016-04-08 2016-07-06 江苏大学 High-torque low-loss permanent magnet fault-tolerant motor
CN105958762A (en) * 2016-04-26 2016-09-21 江苏大学 Novel high torque density high power factor fault tolerant permanent magnet vernier machine and its modulation method
CN105958762B (en) * 2016-04-26 2018-04-17 江苏大学 A kind of fault-tolerant permanent magnetism vernier motor of new high torque density High Power Factor and its modulator approach
CN105896865B (en) * 2016-06-16 2018-05-25 赵鑫堂 A kind of Permanent magnet DC adds can motor
CN106849409A (en) * 2016-11-11 2017-06-13 南方电机科技有限公司 A kind of motor including HALBACH arrays and the equipment including the motor
WO2018086586A1 (en) * 2016-11-11 2018-05-17 南方电机科技有限公司 Motor comprising halbach array and apparatus comprising same
WO2018086595A1 (en) * 2016-11-11 2018-05-17 南方电机科技有限公司 High-torque electric motor and robot comprising same
CN106817003A (en) * 2016-11-11 2017-06-09 南方电机科技有限公司 A kind of motor of high torque and the robot including the motor
CN106849409B (en) * 2016-11-11 2020-10-30 南方电机科技有限公司 Motor comprising HALBACH array and equipment comprising motor
CN106787562A (en) * 2017-01-24 2017-05-31 东南大学 Alternately pole, mixed excitation directly drives vernier motor
CN108880182A (en) * 2018-07-16 2018-11-23 华中科技大学 A kind of division tooth modularization vernier permanent-magnetism linear motor
CN108880182B (en) * 2018-07-16 2021-01-19 华中科技大学 Split-tooth modular vernier permanent magnet linear motor
CN108900055A (en) * 2018-09-06 2018-11-27 无锡力必特自动化设备有限公司 A kind of carnassial tooth stator/rotor permanent magnet vernier motor of uneven arrangement

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