CN102005835A - Halbach outer rotor doubly salient motor - Google Patents
Halbach outer rotor doubly salient motor Download PDFInfo
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- CN102005835A CN102005835A CN 201010582481 CN201010582481A CN102005835A CN 102005835 A CN102005835 A CN 102005835A CN 201010582481 CN201010582481 CN 201010582481 CN 201010582481 A CN201010582481 A CN 201010582481A CN 102005835 A CN102005835 A CN 102005835A
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Abstract
The invention provides a magnetizing outer rotor doubly salient motor with a radial structure, which is characterized by comprising a stator, a rotor, an air gap between the stator and the rotor, a rotating shaft and the like, wherein, the stator comprises a stator permanent magnet support arranged around the rotating shaft, permanent magnets arranged around the stator permanent magnet support, and a stator core arranged around the permanent magnet; the permanent magnets adopt a radial magnetizing or parallel magnetizing mode; the stator core is composed of stator core components; air gaps exist among the stator core components; and the permanent magnets and the stator core components are contacted with each other and have equal number. The magnetizing outer rotor doubly salient motor takes the magnetizing body with a radial/parallel structure as a magnetic source and has simple manufacturing process and less magnetic leakage on an end part; and the magnetizing outer rotor doubly salient motor can be widely applied to fields such as wind power generation, an automobile hub and the like.
Description
Technical field
The present invention relates to machine field, particularly relate to a kind of Halbach external rotor double salient pole motor.
Background technology
The Halbach row are American scholar Klaus.Halbach magnet arrangements modes at a kind of novelty of magnet structure proposition, and accompanying drawing 1 shows the resultant magnetic field of Halbach row internal rotor permanent-magnetic body, and accompanying drawing 2 shows the resultant magnetic field of Halbach row external rotor permanent magnet bodies.The Halbach row are applied to motor and have following advantage: 1. the monolateral Distribution of Magnetic Field of Halbach row self-shielding effect generation no longer needs rotor yoke (to external magnetic field), stator casing (to internal magnetic field) to adopt magnetic material to provide path for it, reduced eddy current loss, reduce moment of inertia, improved the fast-response energy; 2. the Halbach row decompose the overlapped of back tangential magnetic field and radial magnetic field, make the magnetic field intensity of air gap one side increase substantially, and have reduced the volume weight of motor effectively, have improved the power density of motor.
Doubly salient permanent magnet motor (Doubly salient permanent magnet motor, be called for short DSPM) is a kind of novel Alternating Current Governor System that occurs the nineties in eighties of last century along with power electronics and microelectronic development.Form by double salient-pole electric machine, power inverter, position detector and controller four parts.Major advantage be simple in structure, control flexibly.Press the riding position difference of permanent magnet, can be divided into stator permanent magnetic type double salient-pole electric machine and rotor permanent-magnet type double salient-pole electric machine, stator permanent magnetic type is divided into cutting orientation structure and radial structure again.
Chinese patent application number is that 200510037634.5 publication document has proposed a kind of Halbach internal rotor double salient-pole electric machine, but, because it is bigger than conventional motor that external rotor electric machine has moment of inertia, and it is bigger that the armature core diameter can be done, thereby efficiency of motor and power output under swinging load have been improved, therefore has special advantages at some occasion external rotor electric machine, such as wheel hub of wind power generation and automobile etc., therefore it is few to propose leakage field, loss is low, and the novel external rotor electric machine of high power density becomes the research focus of this area.
Accompanying drawing 3 is depicted as the Chinese patent application number 200510094975.6 a kind of three phase external rotor double salient pole permanent magnet brushless electric generators that propose, and it has stator 11, rotor 12, rotating shaft 13, armature winding 14 and permanent magnet 15.Accompanying drawing 4 and accompanying drawing 5 are depicted as the Chinese patent application number 200720050797.1 a kind of bisalient-pole permanent-magnet wheel hub motors that propose, Fig. 4 shows that this electrode has stator 21, rotor 22, support 23, axle 24, bearing 26 and wheel hub 25, and Fig. 5 has shown that further this motor also has permanent magnet 27 and armature winding 28.More than two kinds of motor permanent magnetism all adopt tangential to magnetize, though power density increase since the tangential permanent magnetic body near the axial region leakage field serious, the permanent magnet support will adopt non-magnet material, has increased the manufacturing process and the cost of motor.Therefore, proposition axial region leakage field is few, technology simple, the novel external rotor double salient pole motor of low cost of manufacture becomes the problem of current primary solution.
Summary of the invention
The object of the present invention is to provide a kind of leakage field few, air gap flux density height, the simple Halbach external rotor double salient pole of power density height and technology motor.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Halbach external rotor double salient pole motor is characterized in that, comprises air gap and rotating shaft between stator, rotor, rotor; Described stator comprises: the stator permanent magnet body support frame that twisted rotary shaft is provided with, the permanent magnet that is provided with around the stator permanent magnet body support frame, and the stator core of being made up of the stator core assembly around the permanent magnet outer wall is provided with has air gap between the stator core assembly; Described rotor is outside stator core, and stator core and rotor core are salient pole teeth groove structure, and described permanent magnet is the Halbach array.
Described stator-rotor iron core is salient pole Alveolus type structure, is wound with centralized armature winding on the stator tooth, does not have winding on the rotor tooth, and the stator and rotor tooth all can be straight-tooth or helical teeth.
Described Halbach external rotor double salient pole motor also comprises the stator permanent magnet body support frame that twisted rotary shaft is provided with.
Described stator permanent magnet body support frame is designed to different sizes according to the design and the process requirements of Halbach external rotor double salient pole motor.
There is not winding on the rotor core of described rotor.
Described stator core maybe can be straight-tooth maybe can be helical teeth, and described rotor core maybe can be straight-tooth maybe can be helical teeth.
Described stator permanent magnet body support frame adopts a kind of in permeability magnetic material and the non-magnet material.
Described Halbach external rotor double salient pole motor satisfies when for three phase electric machine: the 6K/4K structure, and K is an integer, K=1,2,3 ...
Described Halbach external rotor double salient pole motor when for three phase electric machine or polyphase machine, stator poles
NsWith the rotor number of teeth
NrSatisfy:
Wherein
mBe the number of phases of motor,
KBe positive integer.
Described stator core inter-module air gap can adopt other non-magnet materials to fill and also can not fill according to the needs of design of electrical motor and technology.
The advantage of the technical solution adopted in the present invention is:
Halbach external rotor double salient pole motor of the present invention is compared with existing double salient-pole electric machine, major technique characteristics and good effect are: adopt external magnetic field Halbach display as magnetic source, motor gas-gap magnetic is close greatly, power-mass ratio is high, air gap is big, armature reaction is little, overload capacity is strong.
Below in conjunction with accompanying drawing the embodiment and advantages of the present invention are further explained.
Description of drawings
Accompanying drawing 1 shows the resultant magnetic field of Halbach row internal rotor permanent-magnetic body;
Accompanying drawing 2 shows the resultant magnetic field of Halbach row external rotor permanent magnet body
Accompanying drawing 3 is structural representations of a kind of three phase external rotor double salient pole permanent magnet brushless electric generator of the prior art;
Accompanying drawing 4 is structural representations of a kind of bisalient-pole permanent-magnet wheel hub motor of the prior art;
Another structural representation of accompanying drawing 5 a kind of bisalient-pole permanent-magnet wheel hub motors of the prior art;
Accompanying drawing 6 shows the structural representation of Halbach external rotor double salient pole motor of the present invention.
Symbol description in the accompanying drawing:
11,21 stators, 12,22 rotors
13 rotating shafts, 14,28 armature winding
15 permanent magnets, 23 supports
24 25 wheel hubs
26 bearings, 27 permanent magnets
62 rotating shafts of 61 stator core inter-module air gaps
63 stator permanent magnet body support frames, 64 stator core assemblies
65 stator salient poles, 66 external magnetic field Halbach arrays
67 rotor cores, 68 rotor with salient pole
69 centralized armature winding.
Embodiment
Referring to accompanying drawing 6,, comprise air gap and rotating shaft 62 between stator, rotor, rotor according to a kind of Halbach external rotor double salient pole motor of the present invention; Described stator comprises: the stator permanent magnet body support frame 63 that twisted rotary shaft 62 is provided with, the permanent magnet 66 that is provided with around stator permanent magnet body support frame 63, stator core around permanent magnet 66 settings, described stator core is made up of stator core assembly 64, has air gap 61 between the stator core assembly 64; Rotor is arranged on outside the stator core, and stator core and rotor core are salient pole teeth groove structure, and described permanent magnet 66 is the Halbach array.Although the motor that this figure shows has stator permanent magnet body support frame 63, but in fact, needs according to design of electrical motor and technology, stator permanent magnet body support frame 63 can be designed to different sizes, perhaps, Halbach row permanent magnet 66 directly is fixed on stator core assembly 64 inwalls without stator permanent magnet body support frame 63.This stator permanent magnet body support frame 63 can be designed to different sizes according to the design and the process requirements of Halbach external rotor double salient pole motor.
Continuation is referring to Fig. 6.Described stator and rotor iron core is salient pole Alveolus type structure, is wound with centralized armature winding on the stator tooth, does not have winding on the rotor core; Described stator core and rotor core be straight-tooth or helical teeth all.
Halbach external rotor double salient pole motor of the present invention, can be that three phase electric machine also can be a polyphase machine, when for three phase electric machine, satisfy: the 6K/4K structure, K is a positive integer, stator core is made up of 2K identical core assembly, three teeth are arranged on each assembly, and 6K tooth evenly distributes along circumference altogether, and rotor is a 4K tooth.Be 6/4 structure when K=1, promptly stator core is 6 teeth, and rotor core is 4 teeth; Be 12/8 structure during K=2, promptly stator core is 12 teeth, and rotor core is 8 teeth; Situation when accompanying drawing of the present invention is depicted as K=4 is 24/16 structure, and stator core is 24 teeth, and rotor core is 16 teeth.
Halbach external rotor double salient pole motor of the present invention, when being three phase electric machine or polyphase machine, except satisfying above-mentioned stator and rotor number of teeth relation, same satisfied:
, in the formula:
NsBe stator poles,
NrBe the rotor number of poles,
mBe the number of phases,
KBe positive integer.
Halbach external rotor double salient pole motor of the present invention, because the monolateral magnetic field that the Halbach row produce, promptly the external magnetic field is very strong, and internal magnetic field is very weak, and stator permanent magnet body support frame 63 can adopt permeability magnetic material also can adopt non-magnet material.
Halbach external rotor double salient pole motor of the present invention, 64 of each assemblies of stator core have air gap 61, and according to the needs of design of electrical motor and technology, each inter-module air gap 61 of stator core also can select for use other non-magnet materials to fill flexibly.
Halbach external rotor double salient pole motor of the present invention, when motor is three-phase 6K/4K structure, the number of poles of external magnetic field Halbach row magnet steel 6 is K, as three-phase 6/4 structure number of pole-pairs is 1, its number of poles of three-phase 12/8 structure is 2, accompanying drawing 5 is depicted as K and equals 4, and promptly the number of pole-pairs of external magnetic field Halbach row magnet steel is 4.
Halbach external rotor double salient pole motor of the present invention can be made motor and also can make generator operation, can be widely used in fields such as wind power generation, automotive hub.
Certainly, more than only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the present invention's scope required for protection.
Claims (10)
1. radial structure external rotor double salient pole motor that magnetizes is characterized in that, comprises air gap and rotating shaft between stator, rotor, rotor; Described stator comprises: the stator permanent magnet body support frame that twisted rotary shaft is provided with, the permanent magnet that is provided with around the stator permanent magnet body support frame and the stator core that is provided with around permanent magnet, described stator core is made up of the stator core assembly, the stator core inter-module has air gap, and permanent magnet is identical with the stator core package count with contact of stator core assembly and permanent magnet number.
2. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes, it is characterized in that stator-rotor iron core is salient pole Alveolus type structure, is wound with centralized armature winding on the stator tooth, do not have winding on the rotor, stator-rotor iron core all can be straight-tooth or helical teeth.
3. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that, described permanent magnet is a kind of in radial magnetizing and the parallel magnetization.
4. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that when satisfy the 6K/4K structure for three phase electric machine, K is an integer, K=1,2,3 ...
5. according to claim 1 or the 4 described radial structures external rotor double salient pole motor that magnetizes, it is characterized in that the piece number of described permanent magnet is identical with the stator core package count, stator core is made up of 2K identical core assembly, and K is an integer.
6. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that not having winding on the rotor core of described rotor.
7. the radial structure according to claim 5 external rotor double salient pole motor that magnetizes is characterized in that described stator core maybe can be straight-tooth maybe can be helical teeth, and described rotor core maybe can be straight-tooth maybe can be helical teeth.
8. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that, described stator permanent magnet body support frame adopts permeability magnetic material.
9. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that, when being three phase electric machine or polyphase machine, and stator poles
NsWith the rotor number of teeth
NrSatisfy:
Wherein m is the number of phases of motor, and K is a positive integer.
10. the radial structure according to claim 1 external rotor double salient pole motor that magnetizes is characterized in that, can be filled with non-magnet material in the described stator core inter-module air gap and also can not fill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010582481 CN102005835A (en) | 2010-12-10 | 2010-12-10 | Halbach outer rotor doubly salient motor |
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| CN 201010582481 CN102005835A (en) | 2010-12-10 | 2010-12-10 | Halbach outer rotor doubly salient motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035274A (en) * | 2010-12-10 | 2011-04-27 | 上海电机学院 | Radial-structure magnetized outer rotor double-salient motor |
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN102751831A (en) * | 2011-04-18 | 2012-10-24 | 西门子公司 | A synchronous permanent magnet machine |
| CN104201854A (en) * | 2014-09-18 | 2014-12-10 | 同济大学 | Electromagnetic structure of vehicular external-rotor radial-magnetic-field permanent magnet synchronous in-wheel motor |
| CN104767357A (en) * | 2014-07-30 | 2015-07-08 | 江苏磁谷科技股份有限公司 | Winding type permanent magnet coupling transmission device |
| CN104917310A (en) * | 2015-06-29 | 2015-09-16 | 中国船舶重工集团公司第七一二研究所 | Low-speed reluctance motor and manufacturing method thereof |
| CN106230211A (en) * | 2016-09-09 | 2016-12-14 | 哈尔滨工程大学 | H type monolateral concentrated magnetic Hot Spare flywheel energy storage sends out all-in-one with dynamic |
| CN110048569A (en) * | 2019-04-10 | 2019-07-23 | 蚁人(苏州)机械科技有限公司 | The stator non iron-core servo motor of robot bilayer halbach array |
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| CN1767316A (en) * | 2005-09-26 | 2006-05-03 | 南京航空航天大学 | Mixed excitation synchronous motor with radial structure |
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN1913290A (en) * | 2006-08-23 | 2007-02-14 | 南京航空航天大学 | Radial magnet steel double salient-pole mixed excitation electric machine |
| CN201118414Y (en) * | 2007-10-29 | 2008-09-17 | 深圳航天科技创新研究院 | Square wave three-phase brushless permanent magnetic DC electromotor |
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| CN201910679U (en) * | 2010-12-10 | 2011-07-27 | 上海电机学院 | Permanent magnetic outer rotor double-salient-pole motor |
| CN201947073U (en) * | 2010-12-10 | 2011-08-24 | 上海电机学院 | Radial structure outer-rotor biconvex pole motor |
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2010
- 2010-12-10 CN CN 201010582481 patent/CN102005835A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767316A (en) * | 2005-09-26 | 2006-05-03 | 南京航空航天大学 | Mixed excitation synchronous motor with radial structure |
| CN1773817A (en) * | 2005-11-11 | 2006-05-17 | 沈阳工业大学 | AC plate type non-core permasyn motor based on Halbach array |
| CN1913290A (en) * | 2006-08-23 | 2007-02-14 | 南京航空航天大学 | Radial magnet steel double salient-pole mixed excitation electric machine |
| CN201118414Y (en) * | 2007-10-29 | 2008-09-17 | 深圳航天科技创新研究院 | Square wave three-phase brushless permanent magnetic DC electromotor |
| CN101572464A (en) * | 2009-06-02 | 2009-11-04 | 上海电机学院 | Halbach array parallel rotor composite excitation brushless synchronous motor |
| CN201910679U (en) * | 2010-12-10 | 2011-07-27 | 上海电机学院 | Permanent magnetic outer rotor double-salient-pole motor |
| CN201947073U (en) * | 2010-12-10 | 2011-08-24 | 上海电机学院 | Radial structure outer-rotor biconvex pole motor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035274A (en) * | 2010-12-10 | 2011-04-27 | 上海电机学院 | Radial-structure magnetized outer rotor double-salient motor |
| CN102751831A (en) * | 2011-04-18 | 2012-10-24 | 西门子公司 | A synchronous permanent magnet machine |
| CN102751831B (en) * | 2011-04-18 | 2016-12-14 | 西门子公司 | A kind of synchronous magnetoelectric machine |
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN102324821B (en) * | 2011-08-30 | 2013-10-09 | 东南大学 | Coaxial magnetic gear |
| CN104767357A (en) * | 2014-07-30 | 2015-07-08 | 江苏磁谷科技股份有限公司 | Winding type permanent magnet coupling transmission device |
| CN104201854A (en) * | 2014-09-18 | 2014-12-10 | 同济大学 | Electromagnetic structure of vehicular external-rotor radial-magnetic-field permanent magnet synchronous in-wheel motor |
| CN104917310A (en) * | 2015-06-29 | 2015-09-16 | 中国船舶重工集团公司第七一二研究所 | Low-speed reluctance motor and manufacturing method thereof |
| CN106230211A (en) * | 2016-09-09 | 2016-12-14 | 哈尔滨工程大学 | H type monolateral concentrated magnetic Hot Spare flywheel energy storage sends out all-in-one with dynamic |
| CN110048569A (en) * | 2019-04-10 | 2019-07-23 | 蚁人(苏州)机械科技有限公司 | The stator non iron-core servo motor of robot bilayer halbach array |
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Application publication date: 20110406 |