CN1299413C - Halbach double-salient pole electrical motor - Google Patents
Halbach double-salient pole electrical motor Download PDFInfo
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- CN1299413C CN1299413C CNB2005100376345A CN200510037634A CN1299413C CN 1299413 C CN1299413 C CN 1299413C CN B2005100376345 A CNB2005100376345 A CN B2005100376345A CN 200510037634 A CN200510037634 A CN 200510037634A CN 1299413 C CN1299413 C CN 1299413C
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Abstract
The present invention relates to a halbach double salient-pole machine of which the stator core assemblies (1), (2) and the rotor (3) are respectively formed by that silicon steel sheets are laminated. A three-phase machine is in a 6K/4K structure, namely that the number of a stator tooth is 6K, and the number of the rotor tooth is 4K, wherein K=1, 2, 3, etc. The stator core is composed of 2K same iron core assemblies, wherein each assembly has three teeth, and 6K teeth are uniformly distributed along the circumference; the width at tooth tip is phi/6K radian. The rotor has 4K teeth, the width at tooth tip is phi/6K radian and can be slightly larger than phi/6K radian; the rotor can be in a straight tooth type and can also be in a skewed tooth type. The present invention is characterized in that the surface of the stator core is adhered with a layer of halbach array magnetic steel 4 of an internal magnetic field. A three-phase winding inputs direct current by a power tube according to the control strategy of the double salient-pole machine. The double salient-pole machine of the present invention has the advantages of high air gap magnetic density, high power weight ratio, big air gap, small armature reaction and high overload capacity.
Description
Technical field
Halbach double salient-pole electric machine of the present invention belongs to the AC/DC motor of electric machinery.
Background technology
1979, the U.S. famous scholar Klaus Halbach was listed as at design-Halbach that the structure of permanent magnet has proposed a kind of novelty, as shown in Figure 1.The various countries scholar is to Halbach row and use and carried out big quantity research subsequently: the arrangement of the scholar Z.Q.Zhu of Chinese origin system of Britain Sheffield university the various theories of Halbach motor, set up the complete Halbach design of electrical motor method of a cover; The Ohio state university of the U.S. utilizes finite element that the Halbach motor has been carried out optimal design; Massachusetts Cambridge technical college has been analyzed the similarities and differences of Halbach row with common magnet structure, has pointed out that Halbach is listed in the superiority in the surface-adhered type magneto, has elaborated the generation of Halbach motor torque; Deep research has all been done to the Halbach motor by Osaka province university of the Chungnam university of the University of Zurich of Sweden, Korea S, Japan, the CAPE Town university in South Africa etc.Comprehensive above-mentioned research, the Halbach motor has following advantage: (1) power density is big.With respect to common magnet structure, because the tangential magnetic field after the decomposition of Halbach row and the overlapped magnetic flux density of air gap that makes of radial magnetic field increase substantially, can effectively reduce the volume of motor, improve the power density of motor.(2) stator and rotor no longer need skewed slot.In the Halbach motor, because the air-gap field Sine distribution, harmonic content is little, and stator and rotor need not skewed slot.(3) Halbach row self-shielding effect, for the Halbach motor of external magnetic field, rotor can adopt non-core material; To the Halbach motor of internal magnetic field, housing does not need permeability magnetic material, even can not need shell, to alleviate the volume weight of motor.And make motor that lower moment of inertia be arranged.(4) permanent magnet utilance height.Because the Halbach row divide to magnetized result, cause its permanent magnet working point higher, generally all above 0.9, have improved the utilance of permanent magnet.(5) can use centralized winding.Owing to its magnetic field Sine distribution, harmonic field is less in the Halbach motor, can adopt centralized winding to improve the electric conducting material utilance.
Doubly salient permanent magnet motor (Doubly salient permanent magnet motor is called for short DSPM) is a kind of novel electromechanical integration ac adjustable speed motor that occurs in the nineties along with power electronics and microelectronic develop rapidly.Form by doubly salient permanent magnet motor, power inverter, position transducer and controller four parts.Major advantage be simple in structure, control flexibly.Press permanent magnet riding position difference, doubly salient permanent magnet motor can be divided into stator permanent magnetic type and rotor permanent-magnet type, and stator permanent magnetic type has two kinds of cutting orientation structure and radial structures again, as shown in Figure 2.
At present, using more is the stator permanent magnetic type doubly salient permanent magnet motor, and it is compared with internal magnetic field Halbach motor, and obviously have two point defects on the structure: the outside leakage field of (1) cutting orientation structure permanent magnet is bigger; (2) radial structure must have the stator magnetic conduction casing.The air gap flux density that has limited motor improves, and power-weight ratio is lower.Utilize the advantage of internal magnetic field Halbach annular array to solve two defectives purpose of the present invention just of stator permanent magnetic type doubly salient permanent magnet motor.
Summary of the invention
The objective of the invention is to propose the new construction double salient-pole electric machine of a kind of high air gap flux density and high power of motor density.
Halbach double salient-pole electric machine of the present invention comprises that internal magnetic field halbach array, stator core, rotor, rotor-position sensor and other annexes constitute.Stator core is a salient-pole structure, is changed by silicon steel sheet, and three phase windings of concentrating are arranged in the iron core slot.Annular internal magnetic field halbach array is posted in its outside.Rotor core is a salient-pole structure, is formed by silicon steel plate stacking, no winding; But the rotor straight-tooth also can be a helical teeth.
Halbach double salient-pole electric machine of the present invention does not need housing to make the path in magnetic field, and the magnetic field of motor internal is stronger, and the magnetic field of motor outside relatively a little less than.Can be that 3 phase motors also can be polyphase machines.Three phase electric machine is the 6K/4K structure, and K is a natural number, can be 1～20 or more, equals 1 as K, is 6/4 structure, i.e. 6 teeth of stator core, 4 teeth of rotor core; K equals 2, is 12/8 structure, i.e. 12 teeth of stator core, 8 teeth of rotor core.
Halbach double salient-pole electric machine of the present invention is compared with existing double salient-pole electric machine, the major technique characteristics are: adopt internal magnetic field halbach array as magnetic source, motor has advantages such as air gap flux density is big, power-weight ratio is high, air gap is big, armature reaction is little, overload capacity is strong.
Description of drawings
Fig. 1 is the form schematic diagram of halbach row;
Fig. 2 is the doubly salient permanent magnet motor schematic diagram
Fig. 3 is three-phase 6/4 a structural profile schematic diagram of the present invention;
Armature winding connected mode schematic diagram when Fig. 4 is a three-phase 6K/4K structure electric operation of the present invention;
Armature winding connected mode schematic diagram when Fig. 5 is a three-phase 6K/4K structure generator operation of the present invention.
Designation among the above-mentioned figure:
A-X, B-Y, C-Z---Halbach double salient-pole electric machine three phase windings.
Embodiment
Because the Halbach double salient-pole electric machine structural similarity of the different numbers of phases is an example with three-phase 6/4 structure Halbach double salient-pole electric machine shown in Figure 3 only below, sets forth electric machine structure of the present invention.
The stator core assembly 1,2 of Halbach double salient-pole electric machine of the present invention and rotor 3 form by silicon steel plate stacking.Three phase electric machine is the 6K/4K structure, i.e. stator number of teeth 6K, and the rotor number of teeth is 4K, K=1,2,3 ... 20.Stator core is made up of 2K identical core assembly, and each assembly has three teeth, and 6K tooth evenly distributes along circumference altogether, and tooth top width is π/6K orphan's degree.A rotor 4K tooth, tooth top width also are π/6K orphan's degree, also can be a bit larger tham π/6K orphan's degree; Rotor can be a straight-tooth, also can be helical teeth.As three-phase 6/4 structure is that two identical stator core assembly symmetries are placed, and each assembly has three teeth, and totally 6 teeth evenly distribute along circumference, and tooth top width is the lonely degree in π/6.4 teeth of rotor, tooth top width also are the lonely degree in π/6, also can be a bit larger tham the lonely degree in π/6.
Halbach double salient-pole electric machine stator core outer surface of the present invention posts one deck internal magnetic field Halbach array magnet steel 4, and its number of pole-pairs should be K mutually, is 1 as its number of pole-pairs of three-phase 6/4 structure, and its number of pole-pairs of three-phase 12/8 structure is 2.Its N, the S utmost point align with the center line of this N, the S stator core under extremely respectively.
Suit is concentrated armature winding 5,6,7 on the Halbach double salient-pole electric machine stator tooth of the present invention.Do the motor time spent, the connected mode of stator armature winding as shown in Figure 4, promptly the armature winding on the same phase stator tooth is in series or in parallel to form a phase, forms A-X, B-Y and C-Z three phase windings, three phase windings pass through power tube biconvex pole motor control strategy input dc power routinely again.
Halbach double salient-pole electric machine of the present invention is done the generator time spent, does not need rotor-position sensor, and the connected mode of stator armature winding as shown in Figure 5.Three phase windings are through the diode rectification output DC.The rational helical teeth of rotor, exportable three-phase alternating current near dextrorotation.
Claims (1)
1. halbach double salient-pole electric machine, comprise stator core assembly and rotor, described stator core and rotor form by silicon steel plate stacking, and salient-pole structure arranged all, in stator coring groove, be wound with the stator armature winding, rotor can be a straight-tooth, it also can be helical teeth, it is characterized in that: the stator core outer surface posts one deck internal magnetic field Halbach array magnet steel (4), number of pole-pairs is K, wherein K is 1～20 natural number, and the stator core package count is 2K, and N, the S utmost point align with the center line of this N, the S stator core under extremely respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100376345A CN1299413C (en) | 2005-01-07 | 2005-01-07 | Halbach double-salient pole electrical motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100376345A CN1299413C (en) | 2005-01-07 | 2005-01-07 | Halbach double-salient pole electrical motor |
Publications (2)
| Publication Number | Publication Date |
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| CN1645713A CN1645713A (en) | 2005-07-27 |
| CN1299413C true CN1299413C (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100376345A Expired - Fee Related CN1299413C (en) | 2005-01-07 | 2005-01-07 | Halbach double-salient pole electrical motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100480386C (en) * | 2001-11-21 | 2009-04-22 | 海康生命科技有限公司 | DNA extracting method and use thereof in detecting transgene component in food |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585987C (en) * | 2008-03-26 | 2010-01-27 | 南京航空航天大学 | Direct-driving electric excitation double-salient pole fault-tolerance aerogenerator |
| CN101719709B (en) * | 2009-12-29 | 2012-02-01 | 卧龙电气集团股份有限公司 | Switched reluctance motor for capacitance split circuit |
| CN101771320A (en) * | 2010-02-10 | 2010-07-07 | 无锡东南车辆科技有限公司 | DC brushless electric machine for photovoltaic water pump |
| DE102011121174B4 (en) * | 2011-12-16 | 2014-04-03 | Eads Deutschland Gmbh | Electric machine, in particular for aircraft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160945A (en) * | 1996-04-01 | 1997-10-01 | 史玲 | Self-commutating DC electric machine, monophase AC motor and AC-DC motor |
| JP2004072820A (en) * | 2002-08-01 | 2004-03-04 | Yaskawa Electric Corp | Magnetizing jig for rotor of ac motor, and manufacturing method using it |
| CN1545189A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Double salient pole mixed excitation motor |
-
2005
- 2005-01-07 CN CNB2005100376345A patent/CN1299413C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1160945A (en) * | 1996-04-01 | 1997-10-01 | 史玲 | Self-commutating DC electric machine, monophase AC motor and AC-DC motor |
| JP2004072820A (en) * | 2002-08-01 | 2004-03-04 | Yaskawa Electric Corp | Magnetizing jig for rotor of ac motor, and manufacturing method using it |
| CN1545189A (en) * | 2003-11-19 | 2004-11-10 | 南京航空航天大学 | Double salient pole mixed excitation motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100480386C (en) * | 2001-11-21 | 2009-04-22 | 海康生命科技有限公司 | DNA extracting method and use thereof in detecting transgene component in food |
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| CN1645713A (en) | 2005-07-27 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Runhe Lamina Manufacturing Co., Ltd. Assignor: Nanjing University of Aeronautics and Astronautics Contract fulfillment period: 2009.6.30 to 2025.1.6 contract change Contract record no.: 2009320001066 Denomination of invention: Halbach double-salient pole electrical motor Granted publication date: 20070207 License type: Exclusive license Record date: 2009.7.7 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.6.30 TO 2025.1.6; CHANGE OF CONTRACT Name of requester: WUXI RUNHE BLADE MANUFACTURING CO., LTD. Effective date: 20090707 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20110107 |