CN102780342B - Four-phase transverse magnetic field permanent-magnet motor with magnetism-collected structure - Google Patents
Four-phase transverse magnetic field permanent-magnet motor with magnetism-collected structure Download PDFInfo
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- CN102780342B CN102780342B CN201210307560.2A CN201210307560A CN102780342B CN 102780342 B CN102780342 B CN 102780342B CN 201210307560 A CN201210307560 A CN 201210307560A CN 102780342 B CN102780342 B CN 102780342B
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Abstract
The invention discloses a four-phase transverse magnetic field permanent-magnet motor with a magnetism-collected structure, and the motor is used for solving the technical problem of high magnetic leakage of the existing transverse magnetic field permanent-magnet motor. The technical scheme of the four-phase transverse magnetic field permanent-magnet motor with the magnetism-collected structure is as follows: a permanent magnet (1), a rotor ring (2) and a rotor permanent magnet (8) are combined to form the magnetism-collected structure rotor unit of the motor, while a stator tooth (4), a stator permanent magnet (9), a stator groove (10) and an auxiliary iron core (13) are combined to form the magnetism-collected structure stator unit of the motor; an insulating ring (3) is arranged between every two phases of magnetism-collected structure rotor units, while an insulating plate (11) is arranged between every two phases of magnetism-collected structure stator units. By virtue of the magnetism-collected structure, the maximal air-gap magnetic field intensity of the permanent-magnet motor is increased to 2.2584 T from 1.13 T in the background art, which is increased by 99.9%; and the magnetic leakage factor of the permanent-magnet motor is reduced to 1.076 from 1.303 and is reduced by 17.4%. The self-positioning force after the composition of four phases is only 18% of that in single phase; however, the change period is shortened to 45 degrees in four phases from 180 degrees in single phase; and therefore, the torque pulsation of the motor is reduced and the performance of the motor is improved.
Description
Technical field
The present invention relates to a kind of magneto, particularly relate to a kind of magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field.
Background technology
In traditional radial magnetic field motor, magnetic line of force place plane all with motor movement direction in same plane, can improve torque density by increasing facewidth degree or increasing the mode of groove area.But because stator tooth in motor and groove are in same section, when stator outer diameter one timing, if increase facewidth degree, groove area reduces, and vice versa.Therefore, no matter change the facewidth degree of motor, still change the groove area of motor, torque density all can not get effective lifting.
1986, professor H.Weh. of Braunschweig, Germany Polytechnics proposed permanent-magnetic motor with transverse magnetic field structure thought, made the circuit of motor and magnetic circuit not at same plane in structural design, overcame between well width and the facewidth degree contradiction of restriction mutually with this.The main magnetic circuit of permanent-magnetic motor with transverse magnetic field is vertical with motor movement direction, does not therefore neither have contradiction between conduction and toothed area, does not also have contradiction between magnetic conduction and groove area.Thereby, can, by adjusting axial magnetic circuit length and coil window area, to change the size of air-gap flux amount and winding magnetic potential, thereby realize high torque density.
Permanent-magnetic motor with transverse magnetic field is a kind of novel electric machine structure form, and motor torque has obtained the raising of essence, has torque large, and power output density is large, electromagnetic load decoupling zero, and flexible design, controls simple; Rotating speed is not high, cancels gear drive, has improved precision and the reliability of whole device.These advantages make TFPM motor can be applicable to the application scenarios such as low speed, large torque, direct driving, should be used widely, but due to the existence of permanent-magnetic motor with transverse magnetic field structure and other factors, make the leakage field of permanent-magnetic motor with transverse magnetic field large, pulsating torque is large, produce complicated, these shortcomings make it have significant limitation, are seriously restricting extensive use and the development of horizontal magnetic field motor.A large amount of researchers by theoretical and experimental demonstration magnetic field leakage field be the main cause of permanent-magnetic motor with transverse magnetic field power factor reduction, as professor Jiang Jianzhong of Shanghai University has proposed the logical method of shielding transverse magnetoresistance motor flux leakage, the method has reduced leakage field to a certain extent, but also has this very large leakage field.Maximum magnetic field strength in air gap is 1.13T.
Summary of the invention
In order to overcome the large deficiency of existing permanent-magnetic motor with transverse magnetic field leakage field, the invention provides a kind of magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field.These magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field form mutually by four, every rotor unit and stator unit of comprising mutually, and rotor unit comprises magnetism-collected structure rotor portion, stator unit comprises magnetism-collected structure stationary part.Each phase structure corresponding part of four phase structures is identical, between each rotor unit, is isolated by dead ring.Owing to adopting magnetism-collected structure that leakage flux is flocked together, by stator tooth surface, air gap, rotor permanent magnet, be converted into effective air gap magnetic flux, can strengthen air-gap field intensity.This structure is not changing on the integrally-built basis of motor, only needs to increase a small amount of permanent magnet and forms magnetism-collected structure, just can reduce leakage field, improves the magnetic density of air gap.
The technical solution adopted for the present invention to solve the technical problems is: a kind of magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field, comprise permanent magnet 1, rotor ring 2, dead ring 3, stator tooth 4, winding 7 and stator slot 10, be characterized in also comprising rotor permanent magnet 8, stator permanent magnet 9 and insulation board 11; Permanent magnet 1, rotor ring 2 and rotor permanent magnet 8 form the magnetism-collected structure rotor unit of motor, and permanent magnet 1 is connected in the madial wall of rotor ring 2, and adjacent two permanent magnet 1 magnetic are contrary; Rotor permanent magnet 8 is embedded in respectively the both sides of permanent magnet 1, its direction of magnetization be parallel to motor shaft to, permanent magnet 1 is concordant with the end face of rotor permanent magnet 8; Both sides rotor unit is connected with motor shaft 6 by bearing 12; Stator tooth 4, stator permanent magnet 9, stator slot 10 and auxiliary iron core 13 form the magnetism-collected structure stator unit of motor; Stator permanent magnet 9 is positioned over stator tooth 4 end surroundings, and the magnetizing direction of stator permanent magnet 9 is diametrical magnetization, and stator tooth 4 end faces are concordant with the upper surface of stator permanent magnet 9, and winding 7 is embedded in stator slot 10; Multiple via holes 14 and counter sink 15 distribute on insulation board 11; Via hole 14 is for fixing auxiliary iron core 13, and counter sink 15 is for fixing lamination silicon steel sheet; Between every phase magnetism-collected structure rotor unit, be provided with dead ring 3, between every phase magnetism-collected structure stator unit, be provided with insulation board 11; Stator unit is fixed on motor shaft 6 by end cap 5.
Described stator slot 10 is made up of 12 silicon steel sheets.
Described auxiliary iron core 13 is made up of 12 silicon steel sheets.
The silicon steel sheet of described auxiliary iron core 13 is rectangles.
Described dead ring 3 is that nylon material is made.
Described insulation board 11 is that nylon material is made.
The invention has the beneficial effects as follows: owing to adopting magnetism-collected structure, the maximum air gap magnetic field intensity of magneto is increased to 2.2584T by the 1.13T of background technology, has increased by 99.9%, and magnetic leakage factor is down to 1.076 by 1.303, has reduced by 17.4%.Due to four after being combined to make by oneself virial only when single-phase 18%, and when single-phase 180 ° of period of change foreshorten to 45 ° of four phase times, have reduced to a great extent motor torque ripple, have improved motor performance.
Below in conjunction with drawings and Examples, the present invention is elaborated.
Brief description of the drawings
Fig. 1 is the longitudinal section schematic diagram of magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field of the present invention.
Fig. 2 is the partial enlarged drawing of magnetism-collected structure rotor unit in Fig. 1.
Fig. 3 is the structural representation of magnetism-collected structure stator unit in Fig. 1.
Fig. 4 is the structural representation of insulation board in Fig. 1.
In figure, 1-permanent magnet; 2-rotor ring; 3-dead ring; 4-stator tooth; 5-end cap; 6-motor shaft; 7-winding; 8-rotor permanent magnet; 9-stator permanent magnet; 10-stator slot; 11-insulation board; 12-bearing; 13-auxiliary iron core; 14-via hole; 15-counter sink.
Embodiment
Following examples are with reference to Fig. 1～4.
Magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field of the present invention comprise permanent magnet 1, rotor ring 2, dead ring 3, stator tooth 4, end cap 5, motor shaft 6, winding 7, rotor permanent magnet 8, stator permanent magnet 9, stator slot 10, insulation board 11, bearing 12.The every phase structure of described motor is identical, and is made up of rotor unit and two parts of stator unit, and every phase rotor unit structure is all identical, and every phase stator unit structure is all identical; Between described every phase rotor unit, be provided with the dead ring 3 that nylon material is made, between every phase stator unit, be provided with the insulation board 11 that nylon material is made.
Every phase rotor unit of motor is made up of permanent magnet 1, rotor ring 2, rotor permanent magnet 8.Permanent magnet 1 is sticked to rotor ring 2 madial walls with epoxy resin, adjacent two permanent magnet 1 magnetic are contrary; 8 points of rotor permanent magnets are embedded in the both sides of permanent magnet 1, its direction of magnetization be parallel to motor shaft to, to reduce leakage field, reach poly-magnetic effect, meanwhile, make permanent magnet 1 concordant with the end face of rotor permanent magnet 8, do not affect air gap evenness.Both sides rotor unit is connected with motor shaft 6 by bearing 12.
Every phase stator unit of motor is made up of 12 pairs of stator tooths 4,10,12 auxiliary iron cores that rectangle silicon steel sheet forms 13 of 9,12 stator slots that silicon steel sheet forms of stator permanent magnet.Cylinder processing is carried out in stator tooth 4 ends, and stator permanent magnet 9 is positioned over stator tooth 4 end surroundings, and the magnetizing direction of stator permanent magnet 9 is radial magnetizing, forms magnetism-collected structure stationary part; Winding 7 is embedded in stator slot 10.Stator unit is fixed on motor shaft 6 by end cap 5, and stator unit is not axially being moved.
Magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field stationary parts are made up of plurality tile type stator permanent magnet 9, be positioned at the surrounding of motor stator tooth 4 ends, be circle distribution, its direction of magnetization is diametrical magnetization, makes stator tooth 4 end faces concordant with the upper surface of stator permanent magnet 9.
Alternatively, the rotor portion of described horizontal magnetic field motor magnetism-collected structure and stationary part can separate.
Those skilled in the art can combine the magnetism-collected structure permanent-magnetic motor with transverse magnetic field of the different numbers of phases, different capacity grade on basis of the present invention, and this is that everybody is familiar with.
Claims (6)
1. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field, comprise permanent magnet (1), rotor ring (2), dead ring (3), stator tooth (4), winding (7) and stator slot (10), characterized by further comprising rotor permanent magnet (8), stator permanent magnet (9) and insulation board (11); Permanent magnet (1), rotor ring (2) and rotor permanent magnet (8) form the magnetism-collected structure rotor unit of motor, and permanent magnet (1) is connected in the madial wall of rotor ring (2), and adjacent two permanent magnets (1) magnetic is contrary; Rotor permanent magnet (8) is embedded in respectively the both sides of permanent magnet (1), its direction of magnetization be parallel to motor shaft to, permanent magnet (1) is concordant with the end face of rotor permanent magnet (8); Both sides rotor unit is connected with motor shaft (6) by bearing (12); Stator tooth (4), stator permanent magnet (9), stator slot (10) and auxiliary iron core (13) form the magnetism-collected structure stator unit of motor; Stator permanent magnet (9) is positioned over stator tooth (4) end surrounding, and the magnetizing direction of stator permanent magnet (9) is diametrical magnetization, and stator tooth (4) end face is concordant with the upper surface of stator permanent magnet (9), and winding (7) is embedded in stator slot (10); Upper multiple via holes (14) and the counter sink (15) of distributing of insulation board (11); Via hole (14) is for fixing auxiliary iron core (13), and counter sink (15) is for fixing lamination silicon steel sheet; Between every phase magnetism-collected structure rotor unit, be provided with dead ring (3), between every phase magnetism-collected structure stator unit, be provided with insulation board (11); Stator unit is fixed on motor shaft (6) by end cap (5).
2. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field according to claim 1, is characterized in that: described stator slot (10) is made up of 12 silicon steel sheets.
3. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field according to claim 1, is characterized in that: described auxiliary iron core (13) is made up of 12 silicon steel sheets.
4. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field according to claim 1, is characterized in that: the silicon steel sheet of described auxiliary iron core (13) is rectangle.
5. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field according to claim 1, is characterized in that: described dead ring (3) is that nylon material is made.
6. magnetism-collected structure four phase permanent-magnetic motor with transverse magnetic field according to claim 1, is characterized in that: described insulation board (11) is that nylon material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210307560.2A CN102780342B (en) | 2012-08-27 | 2012-08-27 | Four-phase transverse magnetic field permanent-magnet motor with magnetism-collected structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210307560.2A CN102780342B (en) | 2012-08-27 | 2012-08-27 | Four-phase transverse magnetic field permanent-magnet motor with magnetism-collected structure |
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| CN102780342A CN102780342A (en) | 2012-11-14 |
| CN102780342B true CN102780342B (en) | 2014-06-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103346652A (en) * | 2013-07-05 | 2013-10-09 | 西北工业大学 | Multiphase compound motor |
| CN104505961B (en) * | 2015-01-16 | 2017-10-03 | 山东理工大学 | A kind of outer rotor dynamotor |
| CN113794353B (en) * | 2021-08-12 | 2022-07-26 | 哈尔滨工业大学 | Electromagnetic induction passive magnetic planet wheel contactless transmission device |
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| CN101075771B (en) * | 2007-04-13 | 2011-06-29 | 华中科技大学 | Permanent-magnetic motor with transverse magnetic field |
| CN102545423B (en) * | 2010-12-13 | 2015-01-21 | 苏州益高电动车辆制造有限公司 | Permanent magnet motor with transverse magnetic field |
| CN202856572U (en) * | 2012-08-27 | 2013-04-03 | 西北工业大学 | Magnetism-collected structure tetra-phase transverse magnetic field permanent magnetism motor |
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