CN201466928U - Halbach parallel-rotor composite excitation synchronous motor - Google Patents
Halbach parallel-rotor composite excitation synchronous motor Download PDFInfo
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- CN201466928U CN201466928U CN2009200732907U CN200920073290U CN201466928U CN 201466928 U CN201466928 U CN 201466928U CN 2009200732907 U CN2009200732907 U CN 2009200732907U CN 200920073290 U CN200920073290 U CN 200920073290U CN 201466928 U CN201466928 U CN 201466928U
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Abstract
An Halbach parallel-rotor composite excitation synchronous motor comprises a rotor and a stator for accommodating the rotor; the stator comprises a stator core, armature teeth arranged on the stator core, and an armature winding encircling the armature teeth; the rotor comprises a rotating shaft, and a Halbach p-m rotor and an electric excitation rotor supported by the rotating shaft, wherein the Halbach p-m rotor comprises a non- magnetic-conductive rotor encircling the rotating shaft and a Halbach permanent magnet stuck to the surface of the non-magnetic-conductive rotor, and the electric excitation rotor comprises a rotor core encircling the rotating shaft, an excitation winding arranged on the rotor core, an electric brush and a slip ring; and both the Halbach p-m rotor and the electric excitation rotor are fixed on the rotating shaft in parallel. The synchronous motor can improve the sinusoidal property of the magnetic flux in the motor airgap, enlarge the adjustable range of the magnetic field, increase the power density of the motor, effectively reduce the eddy loss of the p-m rotor part, and enhance the energy saving effect of the motor.
Description
Technical field
The utility model relates to a kind of ac synchronous motor, particularly relates to a kind of parallel rotor composite excitation ac synchronous motor.
Background technology
The Halbach array is the magnet arrangements mode of American scholar Klaus.Halbach at a kind of novelty of magnet structure proposition.The resultant magnetic field of Halbach array internal rotor permanent-magnetic body as shown in Figure 1, its air-gap field is unique distribution, is monolateral magnetic field, suitable magnetizing direction can make the air-gap flux of motor obtain sine preferably.Adopt the motor of Halbach array when running up, can make iron loss obtain fine control, improve efficiency of motor and power density greatly; And in the Halbach motor, because the Sine distribution degree of air-gap field is higher, harmonic content is little, so does not need on the stator and rotor structure to adopt skewed slot to come the influence in reduced harmonic magnetic field, and stator and rotor do not need skewed slot.
Another permanent magnetism in the prior art-electric excitation parallel rotor composite excitation synchronous machine, it is the rare earth permanent magnet-electric excitation parallel rotor composite excitation synchronous machine of brushless form, its permanent magnetism main generator part and armature winding of auxiliary electrical magnetic part partial common, the armature winding induced potential has two parts, produce by permanent magnetic field and electricity excitation magnetic field induction respectively, corresponding excitation magnetic potential is respectively: main generator partly is the magnetic potential that permanent magnetic steel produces, the required auxiliary magnetic field of regulation voltage is set up by the magnetic potential that the auxiliary electrical magnetic part winding produces, two parts magnetic potential acts on magnetic circuit separately basically individually, forms air-gap field separately.Though this motor has removed brush and slip ring, the effective length of electric excitation part is less, makes that the magnetic field adjustable range is less, influences the performance of motor overall performance.
Also has a kind of parallel rotor composite excitation synchronous machine structure in the prior art, its permanent magnet flux and " weak magnetic " magnetic flux, has the magnetic circuit circulation (radially) of different separately physics magnetic circuit-permanent magnet fluxes in permanent magnet segments, " weak magnetic " magnetic flux is only in magnetic resistance section circulation (radially), " weak magnetic " shows as a kind of synthetic effect, in the silicon steel sheet of stator core, there is not real field weakening. therefore, when low cruise, the magnetic resistance part does not produce torque basically, thereby caused lower motor torque density, and at a high speed during " weak magnetic " operation, the magnetic flux of permanent magnet segments is constant substantially, the magnetic flux of magnetic resistance section then increases with the increase of " weak magnetic " degree, thereby cause ferromagnetic loss to increase with the speed geometric progression, permanent magnet is directly exposed under the armature, makes it produce expendable degaussing easily.
In brief, parallel rotor composite excitation synchronous machine of the prior art or permanent magnet adopt traditional radial magnetizing mode, compare with the Halbach motor, desirable sinusoidal wave air-gap flux and the monolateral magnetic field of difficult formation, the p-m rotor part will provide magnetic circuit with iron core, the weight of motor big and when running up the rotor eddy current bigger, reduced the power density of motor; Though the magnetic field of motor can be regulated, but the live part of Halbach magnet is less, less by the power that the Halbach magnet provides, exciting current that will be bigger when normally moving cooperates could satisfy the stable of output voltage, has increased electric exciting power and time constant of excitation.
The utility model content
For addressing the above problem, the utility model provides a kind of Halbach parallel rotor composite excitation synchronous machine, and this motor can improve the power density of motor and the excitation regulation scope of motor.
The technical scheme that the utility model is taked is:
A kind of Halbach parallel rotor composite excitation synchronous machine comprises rotor and is used to accommodate the stator of this rotor, and described stator comprises stator core, be arranged at the armature tooth on this stator core and be surrounded on the armature winding of this armature tooth; Described rotor comprises rotating shaft and the Halbach p-m rotor and the electric excitation rotor that are supported by rotating shaft, described Halbach p-m rotor comprises the non-magnetic conduction rotor and the Halbach permanent magnet that sticks on this non-magnetic conduction rotor surface of twisted rotary shaft setting, described electric excitation rotor comprise the twisted rotary shaft setting rotor core, be arranged at excitation winding on the rotor core, and brush and slip ring, described Halbach p-m rotor and electric excitation rotor are fixed in the rotating shaft side by side.
Described Halbach permanent magnet adopts the Halbach array structure.
Described Halbach permanent magnet is pasted on described non-magnetic conduction (as aluminum) rotor surface.
Described Halbach permanent magnet can directly be pasted on described non-magnetic conduction rotor surface, also can continue to be fixed in described non-magnetic conduction rotor surface by stainless steel sleeve again.
The excitation field that described Halbach permanent magnet produces is main magnetic field, and the magnetic field that excitation winding produces is as auxiliary magnetic field.
Good effect of the present utility model is:
(1) by utilizing the monolateral air-gap field of Halbach permanent magnet generation, improve the sine of the air-gap flux of motor, motor adopts no core structure, has effectively reduced the eddy current loss of rotor portion, the electric efficiency height;
(2) by Halbach p-m rotor and electric excitation rotor are placed side by side, the excitation field that the Halbach permanent magnet is produced is as major part, the magnetic field that excitation winding produces is as auxiliary adjusting device, exciting current during the motor operate as normal in the excitation winding is zero, excitation winding is consumed power not, only when load variations, just suitable adding exciting current is regulated air-gap field, electrical machine energy-saving;
(3) by utilizing the magnetism-isolating loop of air gap composition to separate Halbach p-m rotor and electric excitation rotor, make the Halbach permanent magnet can not produce the risk of degaussing, two-part air-gap flux can be mutually promoted and offset in air gap, therefore can when not reducing power density, realize the bidirectional modulation of exciting current.
(4) by adopting parallel-connection structure that Halbach permanent magnet and two kinds of magnetic potential sources of electric excitation are set, enlarged the adjustable range in magnetic field.
(5) by the Halbach row are combined with electric excitation, utilize the monolateral property (being magnetic screening effect) in the magnetic field of Halbach permanent magnet generation, make air-gap flux have preferably sine and the rotor yoke magnetic flux approaches zero, and then the rotor yoke of Halbach row part of the present invention uses the non-magnet material (as aluminium) of light weight, also reduce the moment of inertia of motor when having reduced the eddy current loss of rotor yoke, improved motor properties.
Description of drawings
Accompanying drawing 2 is structural representation accompanying drawings of a kind of Halbach motor of the prior art;
Accompanying drawing 3 is structural representation accompanying drawings of a kind of permanent magnetism of the prior art-electric excitation parallel rotor composite excitation synchronous machine;
Accompanying drawing 4 is the structural representation accompanying drawings according to a kind of Halbach parallel rotor composite excitation synchronous machine of the present utility model.
Mark shown in the figure is respectively:
1. stator core 2. air gaps
3. the magnet steel of rotor core 4.Halbach array structure
5. salient pole teeth groove structure
1 ' stator, 2 ' rotor
3 ' DC excitation winding, 4 ' p-m rotor
5 ' electric excitation rotor 6 ' brush and the slip ring
10. stator 20. rotors
21. rotating shaft 22.Halbach p-m rotor
221. non-magnetic conduction rotor 222.Halbach permanent magnet
223. stainless steel sleeve 23. electric excitation rotors
231. electric excitation rotor iron core 232. excitation winding
24,25. air gaps
Embodiment
Below in conjunction with accompanying drawing explained in detail embodiment of the present utility model.
Referring to accompanying drawing 4, Halbach parallel rotor composite excitation synchronous machine comprises rotor 20 and is used to accommodate the stator 10 of this rotor 20.Stator 10 comprises stator core, is arranged at the armature tooth on this stator core and is surrounded on armature winding on this armature tooth.Rotor 20 has rotating shaft 21 and the Halbach p-m rotor 22 and the electric excitation rotor 23 that are set up in parallel in rotating shaft 21; This Halbach p-m rotor 22 comprises by the non-magnetic conduction rotor 221 of Halbach part of rotating shaft 21 supports, sticks on this non-magnetic conduction rotor 221 lip-deep Halbach permanent magnets 222, and in order to further described Halbach permanent magnet 222 is fixed in described non-magnetic conduction rotor 221 lip-deep stainless steel sleeves 223; This electricity excitation rotor 23 comprises electric excitation rotor iron core 231 that twisted rotary shaft 21 is provided with, is arranged at the excitation winding 232 on the electric excitation rotor iron core 231, and brush and slip ring (figure does not show).Described Halbach p-m rotor 22 is arranged at the left side (also can be arranged at the right side) of rotating shaft 21, electricity excitation rotor 23 is arranged at the right side (also can be arranged at the left side) of rotating shaft 21, and described Halbach p-m rotor 22 and electric excitation rotor 23 are fixed in the rotating shaft 21 side by side.Have air gap 24 between described Halbach p-m rotor 22 and the stator 10, have air gap 25 between described electric excitation rotor 23 and the stator 10.
Stator core and electric excitation rotor iron core 231 form by silicon steel plate stacking, and the stator core inboard is a salient pole teeth groove structure, forms the armature teeth groove.The non-magnetic conduction rotor 221 of Halbach part is cylindric, and the center has perforation, is used for passing for rotating shaft 21.The mode of magnetizing of described Halbach permanent magnet 222 is the distinctive mode that magnetizes of Halbach, and the number of pole-pairs of Halbach permanent magnet 222 is identical with the number of pole-pairs in the magnetic field that electric excitation winding 232 is produced.The magnetic potential source parallel connection that magnetic potential source that described electric excitation winding 232 constitutes and described Halbach permanent magnet 222 constitute.
Exciting current during Halbach parallel rotor composite excitation synchronous machine operate as normal provided by the utility model in the excitation winding is zero, excitation winding is consumed power not, only when load variations, just suitably add exciting current and regulate air-gap field, electrical machine energy-saving; And air-gap flux is made up of two parts when unloaded:
(1) electric excitation part magnetic flux: the magnetic flux that the ring current in the described excitation winding 232 produces is through electric excitation rotor iron core 231, air gap 25, armature tooth, stator core, again the armature tooth under another magnetic pole, air gap 25, get back to electric excitation rotor iron core 231, form a flux circuit.
(2) Halbach permanent magnetism part: the N utmost point of Halbach permanent magnet 222 produces radial flux, flow through air gap 24, armature tooth, stator core, arrive another utmost point in magnetic field, again through another armature tooth, air gap 24 under extremely in magnetic field, get back to the S utmost point of Halbach permanent magnet 222, form a flux circuit.
When the magnetic direction that produces when exciting current in the excitation winding 232 was identical with the direction of magnetization of Halbach permanent magnet 222, air-gap field increased in the motor; Otherwise the air-gap field in the motor reduces.Therefore just can regulate air-gap field easily by the size and Orientation of regulating exciting current.
In the technical solution of the utility model, permanent magnet adopts the Halbach permanent magnet, and the Halbach permanent magnet produces monolateral air-gap field, makes the sine of air-gap flux of motor better, has effectively reduced the eddy current loss of rotor portion.Halbach p-m rotor and electric excitation rotor are placed side by side, the major part of excitation field is produced by the Halbach permanent magnet, excitation winding is as just auxiliary adjusting device, exciting current during the motor operate as normal in the excitation winding is zero, excitation winding is consumed power not, only when load variations, just suitably add exciting current and regulate air-gap field, so the utility model is a kind of energy-saving synchronous machine.The magnetism-isolating loop of forming with air gap in the middle of Halbach p-m rotor and the electric excitation rotor separates, make the Halbach permanent magnet can not produce the risk of degaussing, two-part air-gap field can be mutually promoted and offset in air gap, therefore power density can not reduce yet, and can realize the exciting current bidirectional modulation.The utility model Halbach parallel rotor composite excitation synchronous machine adopts Halbach permanent magnet and two kinds of magnetic potential sources of electric excitation parallel-connection structure, has enlarged the adjustable range in magnetic field.Excitation unit adopts the Halbach array to combine with electric excitation, because the monolateral property (being magnetic screening effect) in the magnetic field that the Halbach permanent magnet produces, make air-gap flux have preferably sine and the rotor yoke magnetic flux approaches zero, and then the utility model Halbach p-m rotor yoke portion uses the non-magnet material (as aluminium) of light weight, in the eddy current loss that reduces rotor yoke, also reduced the moment of inertia of motor, improve motor properties, can be widely used in fields such as power industry, transportation.
Should be noted that; the above only is a preferred implementation of the present utility model; for those skilled in the art; under the prerequisite that does not break away from the utility model design; can also make some changes, improvements and modifications; the material of for example described non-magnetic conduction rotor can be aluminium or engineering plastics etc., and these improvement, improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. a Halbach parallel rotor composite excitation synchronous machine comprises rotor and the stator that is used to accommodate this rotor, it is characterized in that,
Described stator comprises stator core, be arranged at the armature tooth on this stator core and be surrounded on the armature winding of this armature tooth;
Described rotor comprises rotating shaft and the Halbach p-m rotor and the electric excitation rotor that are supported by rotating shaft, described Halbach p-m rotor comprises the non-magnetic conduction rotor and the Halbach permanent magnet that sticks on this non-magnetic conduction rotor surface of twisted rotary shaft setting, described electric excitation rotor comprise the twisted rotary shaft setting rotor core, be arranged at excitation winding on the rotor core, and brush and slip ring, described Halbach p-m rotor and electric excitation rotor are fixed in the rotating shaft side by side.
2. Halbach parallel rotor composite excitation synchronous machine according to claim 1 is characterized in that, described Halbach permanent magnet adopts the Halbach array structure.
3. Halbach parallel rotor composite excitation synchronous machine according to claim 1 is characterized in that, described Halbach permanent magnet is pasted on described non-magnetic conduction rotor surface.
4. Halbach parallel rotor composite excitation synchronous machine according to claim 3 is characterized in that, described Halbach permanent magnet continues to be fixed in described non-magnetic conduction rotor surface by metallic sheath.
5. Halbach parallel rotor composite excitation synchronous machine according to claim 1 is characterized in that, the excitation field that described Halbach permanent magnet produces is main magnetic field, and the magnetic field that excitation winding produces is as auxiliary magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200732907U CN201466928U (en) | 2009-06-02 | 2009-06-02 | Halbach parallel-rotor composite excitation synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200732907U CN201466928U (en) | 2009-06-02 | 2009-06-02 | Halbach parallel-rotor composite excitation synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN201466928U true CN201466928U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200732907U Expired - Fee Related CN201466928U (en) | 2009-06-02 | 2009-06-02 | Halbach parallel-rotor composite excitation synchronous motor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255452A (en) * | 2011-07-08 | 2011-11-23 | 广东工业大学 | Hybrid excitation motor device |
| EP2503683A1 (en) * | 2011-03-23 | 2012-09-26 | L-3 Communications Magnet-Motor GmbH | Drive system for a land craft |
| CN102801233A (en) * | 2011-05-25 | 2012-11-28 | 马加良 | Permanent magnet and electrical excitation mixed direct-current motor |
| WO2013087056A2 (en) * | 2011-12-16 | 2013-06-20 | Eads Deutschland Gmbh | Electric machine, in particular for aircraft |
| CN103595212A (en) * | 2013-10-17 | 2014-02-19 | 泰豪科技股份有限公司 | Mixed magnetic power frequency power generator |
| CN104321954A (en) * | 2012-04-20 | 2015-01-28 | 路易斯·芬克尔 | Hybrid induction motor with self aligning permanent magnet inner rotor |
| CN105006933A (en) * | 2015-08-12 | 2015-10-28 | 哈尔滨理工大学 | External stator magnetic pole parallel type hybrid excitation composite motor |
| CN106451964A (en) * | 2016-10-27 | 2017-02-22 | 江苏大学 | Parallel type double-stator hybrid excitation permanent magnet motor |
| CN104868670B (en) * | 2015-06-10 | 2017-03-22 | 哈尔滨理工大学 | Magnetic flux modulated composite motor in parallel hybrid excitation structure |
| WO2018224091A1 (en) * | 2017-06-06 | 2018-12-13 | Schaeffler Technologies AG & Co. KG | Rotor for an electric motor, electric motor and method for producing an electric motor |
| CN109936264A (en) * | 2018-11-23 | 2019-06-25 | 南京航空航天大学 | Aircraft block form composite excitation emergency generator and its application and control method |
| CN110601476A (en) * | 2019-09-17 | 2019-12-20 | 淮阴工学院 | Radial magnetic field axial parallel composite motor |
| CN112671193A (en) * | 2020-11-25 | 2021-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Mixed excitation type motor |
-
2009
- 2009-06-02 CN CN2009200732907U patent/CN201466928U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2503683A1 (en) * | 2011-03-23 | 2012-09-26 | L-3 Communications Magnet-Motor GmbH | Drive system for a land craft |
| WO2012126785A1 (en) * | 2011-03-23 | 2012-09-27 | L-3 Communications Magnet-Motor Gmbh | Drive system for a land craft |
| CN103493360A (en) * | 2011-03-23 | 2014-01-01 | L-3通信磁电机股份有限公司 | Drive system for a land craft |
| US9221326B2 (en) * | 2011-03-23 | 2015-12-29 | L-3 Communications Magnet-Motor Gmbh | Drive system for a land craft |
| US20140051544A1 (en) * | 2011-03-23 | 2014-02-20 | L-3 Communications Magnet-Motor Gmbh | Drive system for a land craft |
| CN102801233A (en) * | 2011-05-25 | 2012-11-28 | 马加良 | Permanent magnet and electrical excitation mixed direct-current motor |
| CN102255452A (en) * | 2011-07-08 | 2011-11-23 | 广东工业大学 | Hybrid excitation motor device |
| WO2013087056A2 (en) * | 2011-12-16 | 2013-06-20 | Eads Deutschland Gmbh | Electric machine, in particular for aircraft |
| WO2013087056A3 (en) * | 2011-12-16 | 2014-09-04 | Eads Deutschland Gmbh | Electric machine, in particular for aircraft |
| CN104321954A (en) * | 2012-04-20 | 2015-01-28 | 路易斯·芬克尔 | Hybrid induction motor with self aligning permanent magnet inner rotor |
| CN104321954B (en) * | 2012-04-20 | 2017-11-07 | 路易斯·芬克尔 | Hybrid induction motor with autoregistration permanent magnet internal rotor |
| CN103595212A (en) * | 2013-10-17 | 2014-02-19 | 泰豪科技股份有限公司 | Mixed magnetic power frequency power generator |
| CN104868670B (en) * | 2015-06-10 | 2017-03-22 | 哈尔滨理工大学 | Magnetic flux modulated composite motor in parallel hybrid excitation structure |
| CN105006933A (en) * | 2015-08-12 | 2015-10-28 | 哈尔滨理工大学 | External stator magnetic pole parallel type hybrid excitation composite motor |
| CN106451964A (en) * | 2016-10-27 | 2017-02-22 | 江苏大学 | Parallel type double-stator hybrid excitation permanent magnet motor |
| CN106451964B (en) * | 2016-10-27 | 2018-12-21 | 江苏大学 | A kind of block form bimorph transducer hybrid excitation permanent magnet motor |
| WO2018224091A1 (en) * | 2017-06-06 | 2018-12-13 | Schaeffler Technologies AG & Co. KG | Rotor for an electric motor, electric motor and method for producing an electric motor |
| CN109936264A (en) * | 2018-11-23 | 2019-06-25 | 南京航空航天大学 | Aircraft block form composite excitation emergency generator and its application and control method |
| CN110601476A (en) * | 2019-09-17 | 2019-12-20 | 淮阴工学院 | Radial magnetic field axial parallel composite motor |
| CN112671193A (en) * | 2020-11-25 | 2021-04-16 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Mixed excitation type motor |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20120602 |