CN203278585U - Halbach parallel rotor hybrid excitation synchronous motor - Google Patents
Halbach parallel rotor hybrid excitation synchronous motor Download PDFInfo
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- CN203278585U CN203278585U CN 201320331803 CN201320331803U CN203278585U CN 203278585 U CN203278585 U CN 203278585U CN 201320331803 CN201320331803 CN 201320331803 CN 201320331803 U CN201320331803 U CN 201320331803U CN 203278585 U CN203278585 U CN 203278585U
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Abstract
The utility model relates to the technical field of motors and discloses a Halbach parallel rotor hybrid excitation synchronous motor. The Halbach parallel rotor-hybrid excitation synchronous motor includes a stator and a rotor, wherein the rotor is arranged inside the stator. The inner side of the stator is provided with a first armature tooth and a second armature tooth respectively; the first armature tooth is wound with a first armature winding; the second armature tooth is wound with a second armature winding; the first armature tooth is wound with an excitation winding; the rotor comprises a rotating shaft; the rotating shaft is provided with a Halbach permanent magnet and a salient-pole-structure rotor; a magnetic separation ring is formed between the Halbach permanent magnet and the salient-pole-structure rotor; the Halbach permanent magnet is located at one side of the second armature tooth; the salient-pole-structure rotor is arranged at one side of the first armature tooth; and an air gap is formed between the rotor and the stator. According to the Halbach parallel rotor hybrid excitation synchronous motor of the utility model, the adjustment range of a magnetic field can be expanded, and devices such as an electric brush and a slip ring are omitted; and therefore, the Halbach parallel rotor hybrid excitation synchronous motor of the utility model is advantageous in simple structure, firmness and durability, suitability for wide rotation speed operation, high efficiency, and high power density.
Description
Technical field
The utility model relates to technical field of motors, particularly a kind of Halbach parallel rotor composite excitation synchronous machine.
Background technology
Halbach parallel rotor composite excitation motor utilizes the magnetic screening effect of Halbach array, makes motor that higher air gap flux density be arranged, and it combines again the advantage of magneto and electro-magnetic motor simultaneously, becomes the focus of Recent study.
Common Halbach parallel rotor composite excitation motor following several structure arranged.
The first is Halbach parallel rotor composite excitation synchronous machine, referring to accompanying drawing 1, comprise rotor and be used for accommodating the stator of this rotor, stator comprises stator core, is arranged at the armature tooth on this stator core, and is surrounded on the distributed armature winding of this armature tooth; Rotor comprises rotating shaft and by Halbach p-m rotor and the electric excitation rotor of rotating shaft support, the Halbach p-m rotor comprises the non-magnetic rotor and the Halbach p-m rotor that sticks on this non-magnetic rotor surface of twisted rotary shaft setting, the electricity excitation rotor comprise the twisted rotary shaft setting rotor core, be arranged at excitation winding on rotor core, and brush and slip ring, Halbach p-m rotor and electric excitation rotor are fixed in rotating shaft side by side.Wherein the excitation field of Halbach permanent magnet generation is main magnetic field, and the magnetic field that excitation winding produces is as auxiliary magnetic field.Although the magnetic field of this motor is adjustable.But on rotor, so motor exists brush and slip ring, make the motor reliability reduce due to excitation winding; Because electric excitation section air gap flux density sine is poor, therefore motor stator winding must adopt distributed winding, make coiling and setting-in difficulty again.
The second is Halbach row parallel rotor composite excitation brushless synchronous motors, referring to accompanying drawing 2, comprise rotor and the stator of accommodating this rotor, the distributed armature winding that described stator comprises stator core, is arranged at the armature tooth in this stator core and is surrounded on armature tooth, and magnetic conduction groove sleeve, circular excitation winding, described magnetic conduction groove sleeve is bolted on electric motor end cap, and contactless with armature spindle, described circular excitation winding is fixed in the groove of magnetic conduction groove sleeve.Described rotor is comprised of rotating shaft and the Halbach rotor and the electric excitation rotor that are set up in parallel in this rotating shaft: described Halbach rotor comprises by the non-magnetic rotor of described rotating shaft support and is arranged at the Halbach array permanent magnet of this non-magnetic rotor surface; Described electric excitation rotor comprises the claw-pole structure that is connected with rotating shaft; Described Halbach rotor and described electric excitation rotor separate by the magnetism-isolating loop that air gap forms.This motor has been realized brushless structure owing to having used magnetic conduction groove sleeve (being fixed on electric motor end cap).But also make whole electric machine structure complicated, magnetic conduction groove sleeve has taken very large volume, has increased the useless volume and weight of motor, has reduced power density.And its stator winding remains distributed winding, complex process.
The third is electro-magnetic flux switching motor, and referring to accompanying drawing 3, in recent years, electro-magnetic flux switching motor is simple in structure due to it, wide speed regulating range, has also caused scholar's great attention.This motor is comprised of stator and rotor two parts, both is salient-pole structure, and centralized armature winding and excitation winding are housed on stator, and on rotor, without winding, the stator and rotor iron core forms by silicon steel plate stacking.What pass through in excitation winding is direct current, and what pass through in centralized armature winding is the alternating current of three-phase symmetrical, and the sense of current of winding alternation has determined the flow direction in the motor.When the polarity of armature winding electric current changes, the resultant magnetic field is the axis direction of two stator tooths of next-door neighbour's excitation winding, produce clockwise or counterclockwise impulsive magnetic field, the flux polarity of stator armature winding linkage changes thus, therefore be called flux switch motor.The magnetic flux handoff procedure relies on rotor inertia and changes the polarity of armature supply on appropriate opportunity, and rotor just can obtain continuous torque, and the speed of rotor depends on the frequency of armature supply variation.Can find out, armature winding and excitation winding are housed on stator, armature winding is for concentrating winding, and when exciting current changed, the magnetic flux in air gap also can change thereupon, can effectively reach the purpose of regulating magnetic field.But due to the existence of excitation winding, make the motor copper loss larger, power density and Efficiency Decreasing.
The utility model content
The purpose of the utility model utility model is in order to solve the problems of the technologies described above, a kind of Halbach parallel rotor composite excitation synchronous machine is provided, to by electric excitation section is converted to electro-magnetic flux switching motor, improve structure and the air gap flux density of motor.
The technical scheme that the utility model is taked is:
A kind of Halbach parallel rotor composite excitation synchronous machine, comprise stator, rotor, described rotor is arranged on described stator interior, it is characterized in that, in the inboard of described stator, the first armature tooth and the second armature tooth are set respectively, are wound with the first armature winding on described the first armature tooth; Be wound with the second armature winding on described the second armature tooth, be wound with excitation winding on described the first armature tooth, described rotor comprises rotating shaft, Halbach permanent magnet and salient-pole structure rotor are set in described rotating shaft, form magnetism-isolating loop between described Halbach permanent magnet and described salient-pole structure rotor, described Halbach permanent magnet is positioned at described the second armature tooth one side, and described salient-pole structure rotor is positioned at described the first armature tooth one side, forms air gap between described rotor and described stator.
Further, described magnetism-isolating loop is formed by the air gap between described Halbach permanent magnet and described salient-pole structure rotor.
Further, be provided with non-magnetic rotor yoke between described Halbach permanent magnet and described rotating shaft.
Further, the material of described non-magnetic rotor yoke is aluminium alloy.
Further, the number of poles of described Halbach permanent magnet is identical with the number of poles of described stator.
Further, the number of the salient pole tooth of described rotor coordinates with the number of poles of described stator.
Further, the number of poles of described Halbach permanent magnet and described stator is 6, and the number of the salient pole tooth of described rotor is 7.
Further, at described rotor outside coating stainless steel sleeve.
The beneficial effects of the utility model are:
Novel Halbach parallel rotor composite excitation synchronous machine adopts two kinds of Halbach row permanent magnet and electric excitations magnetic potential source parallel-connection structure, has enlarged the adjustable range in magnetic field, has saved the devices such as brush and slip ring.Excitation unit adopts the Halbach row to combine with electric excitation, the monolateral property (being self-shielding effect) in the magnetic field that produces due to Halbach row magnet, make air-gap flux have preferably sine and rotor yoke magnetic flux close to zero, thereby make: 1. the rotor yoke of Halbach row part of the present utility model can use 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 the performance of motor.2. stator armature winding of the present utility model can adopt centralized, thereby coiling and setting-in facilitate, technique is simple.In addition, because electric excitation section rotor is the salient pole toothing, making electric excitation section is electro-magnetic flux switching motor, simple in structure, sturdy and durable, suitable wide speed range moves and high efficient high power density thereby whole motor has advantages of, can be widely used in the fields such as power industry, transportation.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of Halbach parallel rotor composite excitation synchronous machine in prior art;
Accompanying drawing 2 is the structural representation of another kind of Halbach row parallel rotor composite excitation brushless synchronous motor in prior art;
Accompanying drawing 3 is the structural representation of a kind of electro-magnetic flux switching motor in prior art;
Accompanying drawing 4 is structural representation of the present utility model;
Accompanying drawing 5 is the A-A cutaway view of accompanying drawing 4;
Accompanying drawing 6 is the B-B cutaway view of accompanying drawing 4.
Mark in accompanying drawing is respectively:
1. stator; 2. rotor;
3. the first armature tooth; 4. the second armature tooth;
5. the first armature winding; 6. the second armature winding;
7. excitation winding; 8. rotating shaft;
9.Halbach permanent magnet; 10. salient-pole structure rotor;
11. non-magnetic rotor yoke; 12. air gap;
13. air gap.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the utility model Halbach parallel rotor composite excitation synchronous machine.
Referring to accompanying drawing 4,5,6, Halbach parallel rotor composite excitation synchronous machine comprises annular stator 1, rotor 2 is set in the inner headed face of stator 1, the iron core of stator 1 is formed by silicon steel plate stacking, and the inboard unshakable in one's determination of stator 1 is the salient pole tooth slot structure, forms the armature teeth groove.The inside of stator 1 is fixedly installed respectively the inboard that the first armature tooth 3 and the second armature tooth 4, the first armature tooths 3 are arranged at stator 1, is wound with the first armature winding 5 on the first armature tooth 3; The second armature tooth 4 also is arranged at the inboard of stator 1, with the first armature tooth 3 side by side, the middle space that forms is wound with the second armature winding 6 on the second armature tooth 4; The position that also is wound with excitation winding 7, the first armature tooths 3 and the second armature tooth 4 on the first armature tooth 3 is interchangeable, and namely excitation winding 7 can be wound on the first armature tooth 3 and also can be wound on the second armature tooth 4.Rotor 2 comprises rotating shaft 8 and Halbach permanent magnet 9 and salient-pole structure rotor 10 is set in rotating shaft 8, the number of poles of Halbach permanent magnet 9 is identical with the number of poles of stator 1, and the number of the salient pole tooth of salient-pole structure rotor 10 to coordinate with the number of poles of stator 1 be appropriately also the prerequisite of motor high-efficiency operation.Halbach permanent magnet 9 is set up in parallel with salient-pole structure rotor 10, also can be provided with non-magnetic rotor yoke 11 between Halbach permanent magnet 9 and rotating shaft 8, and the material selection aluminium alloy of non-magnetic rotor yoke 11 is not only lightweight, and the resistance magnetic property is good.Non-magnetic rotor yoke 11 is cylindric, and the center has perforation, is used for passing for rotating shaft 8.The mode of magnetizing of Halbach permanent magnet 9 is the peculiar mode that magnetizes of Halbach row.Form magnetism-isolating loop between Halbach permanent magnet 9 and salient-pole structure rotor 10, magnetism-isolating loop is formed by the air gap 12 between Halbach permanent magnet 9 and salient-pole structure rotor 10, also can be by hindering the magnetic material in the interior filling of air gap 12.Halbach permanent magnet 9 is positioned at a side of the second armature tooth 4 that there is no the coiling excitation winding, salient-pole structure rotor 10 is positioned at a side of the first armature tooth 3 of coiling excitation winding, if the first armature tooth 3 and the second armature tooth 4 exchange, Halbach permanent magnet 9 also will exchange with salient-pole structure rotor 10, is positioned at a side of the armature tooth that is wound with excitation winding 7 to guarantee salient-pole structure rotor 10.Form air gap 13 between rotor 2 and stator 1.Also can coat stainless steel sleeve in rotor 2 outsides.
The below introduces operation principle of the present utility model and the course of work in detail, and Halbach parallel rotor composite excitation synchronous machine has two magnetic potential sources: one is permanent magnetic potential; Another is the electric excitation magnetic potential after energising in the DC excitation winding.Change the size and Orientation of electric current in excitation winding, the air gap resultant magnetic field will change, and comprises following three kinds of situations:
1) if in the stator excitation winding, the DC excitation electric current is zero, air-gap field is only produced by permanent magnet, is constant.
2) if in the stator excitation winding, the DC excitation electric current is greater than zero, the magnetic direction of exciting current generation is identical with the magnetic direction that same extreme Halbach row permanent magnet produces, and makes the air gap resultant magnetic field increase in synchronous machine, plays to increase magnetic action.
3) otherwise, if in the stator excitation winding, the DC excitation electric current is less than zero, the magnetic direction that produces of exciting current is opposite with the magnetic direction of same extreme Halbach row permanent magnet generation, makes the air gap resultant magnetic field in synchronous machine reduce, and plays weak magnetic action.Therefore the size and Orientation of regulating exciting current can be regulated the air gap resultant magnetic field easily, thereby reaches the purpose of adjustable magnetic.
When being connected with the adjusting of DC excitation electric current participation air-gap field in excitation winding, air-gap field is produced jointly by the exciting current in Halbach row permanent magnet, excitation winding, and the magnetic flux trend in air-gap field can be summarized as follows substantially at this moment:
(1) electric excitation part magnetic flux: the working gas gap of the radial flux that the exciting current in described excitation winding produces through between armature tooth, rotor arrives rotor with salient pole, this radial flux is converted to axial magnetic flux by rotor with salient pole, afterwards this axial magnetic flux again the rotor tooth under another magnetic pole, air gap, armature tooth, stator yoke section to the stator excitation winding, form a flux circuit.
(2) Halbach permanent magnet part: Halbach row N utmost point permanent magnet produces radial flux, and Halbach row S utmost point permanent magnet is got back to by the air gap of flowing through, armature tooth, stator yoke section, then the stator tooth under another magnetic pole, air gap, forms a flux circuit.When not participating in the adjusting of air-gap field when there is no the DC excitation electric current in excitation winding, the magnetic flux trend in air-gap field only comprises Halbach permanent magnetism part.
In addition, during load, to flow through the three-phase current of one group of symmetry in the three-phase symmetrical armature winding of this novel Halbach parallel rotor composite excitation synchronous machine, thereby armature winding will produce armature magnetomotive force and corresponding armature field, makes the resultant magnetic field in air gap be produced by the acting in conjunction of armature magnetomotive force and main pole magnetomotive force (generation of Halbach permanent magnet).During load, armature magnetomotive force just is called armature reaction to the impact in main pole magnetic field, and its character (increase magnetic, degaussing or hand over magnetic) depends on that armature magnetomotive force and main field are at the relative position in space.
Because the major part of the utility model excitation field is produced by Halbach row permanent magnet, excitation winding is as just auxiliary adjusting device, exciting current during the motor normal operation in excitation winding is zero, excitation winding is consumed power not, only when load variations, just the suitable exciting current that adds is regulated air-gap field, so the utility model is a kind of energy saving type synchronous motor.
Electric excitation part of the present utility model is by being arranged on excitation winding on stator salient poles structure tooth, on rotor without winding, realized brushless structure, the failure rate of described Halbach parallel rotor composite excitation synchronous machine is reduced, and because the sine of the air-gap flux of Halbach permanent magnet is better, make the noise of motor also less.
The number of pole-pairs of the utility model Halbach row permanent magnet is identical with the number of pole-pairs of stator salient poles teeth groove.The magnetic field of the magnetic potential source generation of the magnetic potential source that excitation winding consists of and Halbach permanent magnet formation is spatially too large related.
Halbach row parallel rotor composite excitation synchronous machine provided by the utility model, when being connected with the DC excitation electric current in excitation winding, the main flux in air gap is comprised of two parts:
(1) electric excitation part magnetic flux: the working gas gap of the radial flux that the exciting current in described excitation winding produces through between armature tooth, rotor arrives rotor with salient pole, this radial flux is converted to axial magnetic flux by rotor with salient pole, afterwards this axial magnetic flux again the rotor tooth under another magnetic pole, air gap, armature tooth, stator yoke section to excitation winding, form a flux circuit.
(2) Halbach row permanent magnetism part: Halbach row N utmost point permanent magnet produces radial flux, and Halbach row S utmost point permanent magnet is got back to by the air gap of flowing through, armature tooth, stator yoke section, then the stator tooth under another magnetic pole, air gap, forms a flux circuit.When in excitation winding during excitation-free current, the main flux in air gap only comprises this part.
When the magnetic direction that produces when exciting current in excitation winding was identical with the magnetic direction of Halbach permanent magnet, in motor, air-gap field increased; Otherwise the air-gap field in motor reduces.Therefore just can regulate easily air-gap field by the size and Orientation of regulating exciting current.
In the technical solution of the utility model, rotor is formed side by side by Halbach permanent magnet and salient-pole structure rotor.Permanent magnetism part is because the Halbach permanent magnet produces monolateral air-gap field, make the sine of air-gap flux of motor better, and the number of magnetic poles that the Halbach permanent magnet rotor forms is identical with stator poles, all is set to 6 utmost points.And magnetic flux switching part rotor section is 7 salient pole teeth, i.e. 7 electrode structures, thus this part is 6/7 utmost point electro-magnetic flux switching motor.Therefore the stator armature winding of this Halbach parallel rotor composite excitation synchronous machine can adopt centralized winding, thereby coiling and setting-in are convenient.And, by Halbach row rotor and electric excitation section salient-pole structure rotor being placed side by side and excitation winding is placed on the stator salient poles tooth, make on rotor without winding, saved brush and slip ring, thereby electric machine structure is simple, improved reliability.
Because Halbach row rotor and electric excitation section salient-pole structure rotor are placed side by side, the major part of excitation field is produced by Halbach row permanent magnet, excitation winding is as just auxiliary adjusting device, exciting current during the motor normal operation in excitation winding is zero, excitation winding is consumed power not, only when load variations, just the suitable exciting current that adds is regulated air-gap field, so the utility model is a kind of energy saving type synchronous motor; The magnetism-isolating loop that forms with air gap in the middle of Halbach row rotor and electric excitation section salient-pole structure rotor in addition separates, make Halbach row permanent magnet can not produce the risk of degaussing, and two-part air-gap field can superpose in air gap mutually, so power density can not reduce yet.
The above is only preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. Halbach parallel rotor composite excitation synchronous machine, comprise stator, rotor, described rotor is arranged on described stator interior, it is characterized in that: in the inboard of described stator, the first armature tooth and the second armature tooth are set respectively, are wound with the first armature winding on described the first armature tooth; Be wound with the second armature winding on described the second armature tooth, be wound with excitation winding on described the first armature tooth, described rotor comprises rotating shaft, Halbach permanent magnet and salient-pole structure rotor are set in described rotating shaft, form magnetism-isolating loop between described Halbach permanent magnet and described salient-pole structure rotor, described Halbach permanent magnet is positioned at described the second armature tooth one side, and described salient-pole structure rotor is positioned at described the first armature tooth one side, forms air gap between described rotor and described stator.
2. Halbach parallel rotor composite excitation synchronous machine according to claim 1, it is characterized in that: described magnetism-isolating loop is formed by the air gap between described Halbach permanent magnet and described salient-pole structure rotor.
3. Halbach parallel rotor composite excitation synchronous machine according to claim 1, is characterized in that: be provided with non-magnetic rotor yoke between described Halbach permanent magnet and described rotating shaft.
4. Halbach parallel rotor composite excitation synchronous machine according to claim 3, it is characterized in that: the material of described non-magnetic rotor yoke is aluminium alloy.
5. the described Halbach parallel rotor composite excitation of any one synchronous machine according to claim 1 to 4, it is characterized in that: the number of poles of described Halbach permanent magnet is identical with the number of poles of described stator.
6. Halbach parallel rotor composite excitation synchronous machine according to claim 5, it is characterized in that: the number of the salient pole tooth of described rotor coordinates with the number of poles of described stator.
7. Halbach parallel rotor composite excitation synchronous machine according to claim 6, it is characterized in that: the number of poles of described Halbach permanent magnet and described stator is 6, the number of the salient pole tooth of described rotor is 7.
8. the described Halbach parallel rotor composite excitation of any one synchronous machine according to claim 1 to 4, is characterized in that: at described rotor outside coating stainless steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320331803 CN203278585U (en) | 2013-06-09 | 2013-06-09 | Halbach parallel rotor hybrid excitation synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320331803 CN203278585U (en) | 2013-06-09 | 2013-06-09 | Halbach parallel rotor hybrid excitation synchronous motor |
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| CN203278585U true CN203278585U (en) | 2013-11-06 |
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| CN 201320331803 Expired - Lifetime CN203278585U (en) | 2013-06-09 | 2013-06-09 | Halbach parallel rotor hybrid excitation synchronous motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048740A (en) * | 2015-07-08 | 2015-11-11 | 南京航空航天大学 | Permanent magnet and variable reluctance parallel hybrid excitation brushless motor |
| CN106357078A (en) * | 2015-07-23 | 2017-01-25 | 哈尔滨电机厂有限责任公司 | Parallel rotor structured hybrid-excited motor brushless electro-excitation rotor pole |
| WO2018086586A1 (en) | 2016-11-11 | 2018-05-17 | 南方电机科技有限公司 | Motor comprising halbach array and apparatus comprising same |
| CN108462358A (en) * | 2018-05-10 | 2018-08-28 | 哈尔滨理工大学 | A kind of cylinder type bimorph transducer salient pole permanent-magnet linear motor based on halbach arrays |
| 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 |
-
2013
- 2013-06-09 CN CN 201320331803 patent/CN203278585U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048740A (en) * | 2015-07-08 | 2015-11-11 | 南京航空航天大学 | Permanent magnet and variable reluctance parallel hybrid excitation brushless motor |
| CN106357078A (en) * | 2015-07-23 | 2017-01-25 | 哈尔滨电机厂有限责任公司 | Parallel rotor structured hybrid-excited motor brushless electro-excitation rotor pole |
| CN106357078B (en) * | 2015-07-23 | 2018-07-13 | 哈尔滨电机厂有限责任公司 | Parallel rotor structure mixed excitation electric machine brush-less electrically exciting rotor magnetic pole |
| WO2018086586A1 (en) | 2016-11-11 | 2018-05-17 | 南方电机科技有限公司 | Motor comprising halbach array and apparatus comprising same |
| CN108462358A (en) * | 2018-05-10 | 2018-08-28 | 哈尔滨理工大学 | A kind of cylinder type bimorph transducer salient pole permanent-magnet linear motor based on halbach arrays |
| CN108462358B (en) * | 2018-05-10 | 2023-11-10 | 哈尔滨理工大学 | Cylindrical double-stator salient pole permanent magnet linear motor based on halbach array |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20131106 |