CN102035274A - Radial-structure magnetized outer rotor double-salient motor - Google Patents
Radial-structure magnetized outer rotor double-salient motor Download PDFInfo
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- CN102035274A CN102035274A CN 201010582485 CN201010582485A CN102035274A CN 102035274 A CN102035274 A CN 102035274A CN 201010582485 CN201010582485 CN 201010582485 CN 201010582485 A CN201010582485 A CN 201010582485A CN 102035274 A CN102035274 A CN 102035274A
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Abstract
The invention provides a radial-structure magnetized outer rotor double-salient motor, which is characterized by comprising a stator, a rotor, an air gap between the stator and the rotor, a rotating shaft and the like. The stator comprises a stator permanent magnet bracket arranged around the rotating shaft, permanent magnets arranged around the stator permanent magnet bracket, and a stator core arranged around the permanent magnets, wherein the permanent magnets adopt a radial magnetization or parallel magnetization mode; the stator core consists of stator core assemblies; air gaps are formed among the stator core assemblies; and the permanent magnets are contacted with the stator core assemblies and the number of the permanent magnets is the same as that of the stator core assemblies. By adopting radial/parallel structure magnetized magnets as a magnetic source, the motor manufacturing process is simple, magnetic leakage at end parts is a little, and the motor can be widely applied to the fields of wind power generation, automotive hubs and the like.
Description
Technical field
The present invention relates to a kind of double salient-pole electric machine, particularly relate to a kind of radial structure external rotor double salient pole motor that magnetizes.
Background technology
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.
Because to have moment of inertia bigger than conventional motor for external rotor electric machine, and the armature core diameter can do bigger, thereby improved efficiency of motor and power output under swinging load.Therefore, have special advantages at some occasion external rotor electric machine, such as the fields such as wheel hub of wind power generation and automobile, it is few therefore to propose leakage field, and loss is low, and the novel external rotor electric machine of high power density becomes this area researcher's top priority.
Accompanying drawing 1 is depicted as a kind of three phase external rotor double salient pole permanent magnet brushless electric generator that the publication document of Chinese patent application numbers 200510094975.6 proposes, and it has stator 11, rotor 12, rotating shaft 13, armature winding 14 and permanent magnet 15.It number is the 200720050797.1 a kind of bisalient-pole permanent-magnet wheel hub motors that propose that accompanying drawing 2 is depicted as Chinese patent application, and it has stator 21, rotor 22, support 23, axle 24, wheel hub 25 and bearing 26.Accompanying drawing 3 has shown that further this motor also has permanent magnet 27 and armature winding 28.More than two kinds of magnetoes all adopt tangential to magnetize, though air gap flux 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, provide that the axial region leakage field is few, technology is simple, novel external rotor double salient pole motor low cost of manufacture becomes the problem of current primary solution.
Summary of the invention
The object of the present invention is to provide that a kind of leakage field is few, efficient is high, low cost of manufacture, the simple radial structure of manufacturing process magnetize the external rotor double salient pole motor.
For achieving the above object, the present invention adopts following technical scheme:
A kind of radial structure external rotor double salient pole motor that magnetizes 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, stator core around the permanent magnet setting, described permanent magnetism adopts radial magnetizing or parallel magnetization mode, described stator core is made up of the stator core assembly, the stator core inter-module has air gap, and permanent magnetism is identical with the stator core package count with contact of stator core assembly and permanent magnet number.
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, and stator-rotor iron core all can be straight-tooth or helical teeth.
Described permanent magnet is a kind of in radial magnetizing and the parallel magnetization.
The described radial structure external rotor double salient pole motor that magnetizes is a three phase electric machine, satisfies the 6K/4K structure when for three phase electric machine, and K is an integer, K=1,2,3 ...
The piece number of described permanent magnet is identical with the stator core package count, and stator core is made up of 2K identical core assembly, and K is an integer.
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 permeability magnetic material.
When being three phase electric machine or polyphase machine, the magnetize stator poles of external rotor double salient pole motor of described radial structure
NsWith the rotor number of teeth
NrSatisfy:
Wherein
mBe the number of phases of motor,
KBe positive integer.
According to the needs of design of electrical motor and technology, stator core inter-module air gap can be filled with other non-magnet materials and also can not filled.
The radial structure of the present invention external rotor double salient pole motor that magnetizes is compared with existing double salient-pole electric machine, and major technique characteristics and good effect are: adopt the radial structure charged magnet as magnetic source, motor manufacturing technology is simple, brow leakage is few.
Below in conjunction with accompanying drawing the embodiment and advantages of the present invention are further explained.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of three phase external rotor double salient pole permanent magnet brushless electric generator of the prior art;
Accompanying drawing 2 is structural representations of a kind of bisalient-pole permanent-magnet wheel hub motor of the prior art;
Accompanying drawing 3 is another structural representations of accompanying drawing 2;
Accompanying drawing 4 is that a kind of permanent magnet of the present invention adopts the radial structure of the radial magnetizing mode external rotor double salient pole motor that magnetizes;
Accompanying drawing 5 is that a kind of permanent magnet of the present invention adopts the radial structure of the parallel magnetization mode external rotor double salient pole motor that magnetizes.
The reference numeral explanation:
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
41,51 radially/42,52 rotating shafts of parallel magnetization permanent magnet
43,53 stator permanent magnet body support frames, 44,54 stator core assemblies
45,55 stator salient poles, 46,56 stator core inter-module air gaps
47,57 rotor cores, 48,58 rotor with salient pole
49,59 centralized armature winding.
Embodiment
The external rotor double salient pole electric machine structure is similar because the radial structure of the different numbers of phases magnetizes, and is example with the radial structure of three-phase 24/16 structure shown in the accompanying drawing 4 external rotor double salient pole motor that magnetizes only below, elaborates the specific embodiment of the present invention.
Referring to accompanying drawing 4,, comprise air gap and rotating shaft 42 etc. between stator, rotor, rotor according to a kind of radial structure of the present invention external rotor double salient pole motor that magnetizes.Stator comprises: the stator permanent magnet body support frame 43 that twisted rotary shaft 42 is provided with, the permanent magnet 41 that is provided with around stator permanent magnet body support frame 43, stator core around permanent magnet 41 settings, described stator core is made up of stator core assembly 44, has air gap 46 between the stator core assembly 44, permanent magnet 41 adopts the radial magnetizing mode, and rotor is arranged on outside the stator.In addition, this kind radial structure external rotor double salient pole motor that magnetizes can also further comprise rotor-position sensor and other annexes.
Described stator and rotor iron core is salient pole Alveolus type structure, is wound with centralized armature winding 49 on the stator tooth, does not have winding on the rotor, and stator-rotor iron core all can be straight-tooth or helical teeth.
Described stator permanent magnet body support frame 43 adopts permeability magnetic material, the present invention can be a three phase electric machine, it also can be polyphase machine, three phase electric machine is the 6K/4K structure, K=1,2,3 ... Deng integer, the piece number of permanent magnet 42 is identical with the quantity of stator core assembly 44, stator core is made up of 2K identical stator core assembly 44, three teeth are arranged on each stator core assembly 44, 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 47 is 16 teeth.
The radial structure of the present invention external rotor double salient pole motor that magnetizes, except satisfying above-mentioned stator and rotor number of teeth relation, satisfy equally:
, in the formula:
NsBe stator poles,
NrBe the rotor number of poles,
mBe the number of phases,
KBe positive integer.
Stator permanent magnet body support frame 43 adopts permeability magnetic material; According to the needs of design of electrical motor and technology, air gap 46 can select for use other non-magnet materials to fill flexibly between stator module.Be tied with centralized armature winding 49 on the stator iron core tooth.
Accompanying drawing 5 is that a kind of permanent magnet of the present invention adopts the radial structure of the parallel magnetization mode external rotor double salient pole motor that magnetizes, and comprises air gap and rotating shaft 52 etc. between stator, rotor, rotor.Stator comprises: the stator permanent magnet body support frame 53 that twisted rotary shaft 52 is provided with, the permanent magnet 51 that is provided with around stator permanent magnet body support frame 53, around the stator of permanent magnet 51 settings and the rotor that is provided with along the stator excircle, described stator core is made up of stator core assembly 54, have air gap 56 between the stator core assembly 54, rotor is arranged on outside the stator.Its structure and embodiment shown in Figure 4 are basic identical, and different is that the permanent magnet 51 among this embodiment adopts the parallel magnetization modes.
The radial structure of the present invention external rotor double salient pole motor that magnetizes 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 |
|---|---|---|---|
| CN 201010582485 CN102035274A (en) | 2010-12-10 | 2010-12-10 | Radial-structure magnetized outer rotor double-salient motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010582485 CN102035274A (en) | 2010-12-10 | 2010-12-10 | Radial-structure magnetized outer rotor double-salient motor |
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| CN102035274A true CN102035274A (en) | 2011-04-27 |
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| CN 201010582485 Pending CN102035274A (en) | 2010-12-10 | 2010-12-10 | Radial-structure magnetized outer rotor double-salient motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840586A (en) * | 2014-02-27 | 2014-06-04 | 上海中科深江电动车辆有限公司 | Permanent magnetic outer rotor hub motor |
| CN110798040A (en) * | 2019-12-11 | 2020-02-14 | 山东理工大学 | Outer rotor doubly salient permanent magnet motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102005835A (en) * | 2010-12-10 | 2011-04-06 | 上海电机学院 | Halbach outer rotor doubly salient motor |
| CN201947073U (en) * | 2010-12-10 | 2011-08-24 | 上海电机学院 | Radial structure outer-rotor biconvex pole motor |
-
2010
- 2010-12-10 CN CN 201010582485 patent/CN102035274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102005835A (en) * | 2010-12-10 | 2011-04-06 | 上海电机学院 | Halbach outer rotor doubly salient motor |
| CN201947073U (en) * | 2010-12-10 | 2011-08-24 | 上海电机学院 | Radial structure outer-rotor biconvex pole motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840586A (en) * | 2014-02-27 | 2014-06-04 | 上海中科深江电动车辆有限公司 | Permanent magnetic outer rotor hub motor |
| CN110798040A (en) * | 2019-12-11 | 2020-02-14 | 山东理工大学 | Outer rotor doubly salient permanent magnet motor |
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Application publication date: 20110427 |