CN201536282U - Flux reversal motor with magnetic field regulating capabilities - Google Patents
Flux reversal motor with magnetic field regulating capabilities Download PDFInfo
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- CN201536282U CN201536282U CN2009202358769U CN200920235876U CN201536282U CN 201536282 U CN201536282 U CN 201536282U CN 2009202358769 U CN2009202358769 U CN 2009202358769U CN 200920235876 U CN200920235876 U CN 200920235876U CN 201536282 U CN201536282 U CN 201536282U
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Abstract
A flux reversal motor with magnetic field regulating capabilities comprises a stator (1), a single-phase centralized excitation winding (2), a permanent magnet (3), a three-phase centralized armature winding (4), a rotor (5) and a groove (6) arranged on a stator tooth, wherein the middle portion of each stator tooth is provided with a groove (6) for placing the single-phase centralized excitation winding (2) facing to an air gap, two permanent magnets (3) whose polarities are mutually reversed are mounted on each stator tooth facing to the surface of the air gap, polarities of four permanent magnets under two adjacent stator teeth are distributed in a crossing way, namely are distributed in a NS-SN way, each coil of the three-phase centralized armature winding (4) is connected over a stator tooth in turn, the magnetic fields of the permanent magnets can be adjusted through changing the size and direction of electric actuation electric current in the excitation winding, thereby overcoming the shortcoming of a pure permanent magnetic motor, enabling the mixed excitation flux reversal motor to get static characteristics of magnetic chains, reverse electromotive force and the like which are distributed close to ladder-shaped wave extremely under the condition of adopting a concentrated winding and a rotor straight groove.
Description
Technical field
The utility model is a kind of simple in structure, firm, has the stronger torque fan-out capability and the motor of higher power density, and the especially a kind of motor that can realize the composite excitation function belongs to the technical field that motor is made.
Background technology
Continuous aggravation along with energy crisis; adopt permanent magnet excitation to replace electric excitation and become global common recognition to save energy resource consumption; simultaneously because China is the abundantest country of rare earth resources in the world; developmental research and apply the rare-earth permanent-magnet electric machine of new structure has important significance for theories and practical value.The present hybrid vehicle of broad research particularly requires that wherein motor driven systems volume is little, in light weight, efficient is high, good reliability, and non-maintaining, torque is exerted oneself greatly, speed-regulating range width.Yet, because the bottleneck that magneto self exists air-gap field to regulate has limited its application in hybrid vehicle.The unloaded permanent magnetism magnetic linkage of most magnetoes is all greater than the product of d-axis inductance and rated current, magneto is a pair of contradiction that can't be in harmonious proportion between the highest running speed of the breakdown torque of Heng Zhuanjuqu and Heng Gongshuaiqu: on the one hand, increase the breakdown torque fan-out capability that the permanent magnetism magnetic linkage no doubt can improve motor, can limit the high-speed cruising (because continuous unloaded back electromotive force that increases) of motor simultaneously; On the other hand, when the d-axis inductance of the electric current limit of inverter and motor fixedly the time, reduce the permanent magnetism magnetic linkage and help improving the output-constant operation scope of motor but can exert oneself by torque-limiting.Therefore, the shortcoming of above-mentioned magneto has become to limit the bottleneck of its application.And what occur at present is that the mixed excitation electric machine major part of prototype is all placed stator with the DC excitation winding with the rotor permanent magnet-type motor.No matter in order to provide one to be radially or axially parallel with permanent magnet flux path to electro-magnetic flux, the electric machine structure that is proposed is unusual complexity all, no matter from manufacturing process or finished product large-scale production, all face great challenge.If the motor of composite excitation type needs to make great sacrifice for the adjusting that realizes magnetic field from structure complexity, its competitiveness will be had a greatly reduced quality.
On the other hand, from having occurred the stator permanent magnetic type electric of three kinds of new structures at the end of last century in the world successively, be doubly salient permanent magnet motor, flux switch permanent magnet motor and flux-reversal magneto, its structure general character is for all to place stator with permanent magnet and armature winding, and rotor only is made up of soft magnetic materials such as silicon steel sheets.Composite excitation organization plan at the above two all proposes, the present invention is just on flux-reversal permanent magnet motor structure basis, revised the magnet steel magnetizing direction, a kind of composite excitation type magnetic flux reverse motor of new structure has been proposed, to avoid occurring labyrinth, can realize the composite excitation function and try hard on the pure permanent-magnetic electric machine of maintenance basis, not do material alteration.
Summary of the invention
Technical problem: the purpose of this utility model is to propose a kind of compact conformation, simple, a kind of magnetic flux reverse motor with magnetic field regulating power that robustness is good, this motor can rationally be arranged electric excitation winding space, under the condition that does not additionally increase volume, can further improve the power density of motor, flexible by electric exciting current and armature supply improves every performance in all directions simultaneously, comprises the high efficiency in breakdown torque, the highest running speed of permanent power and the whole service district scope.
Technical scheme: the magnetic flux reverse motor with magnetic field regulating power of the present utility model comprises: slot on armature winding, rotor and the stator tooth in stator, single-phase central excitation winding, permanent magnet, the three-phase set; Each stator tooth middle part has a groove towards air gap and places single-phase central excitation winding; Be pasted with two mutually opposite permanent magnets of polarity at each stator tooth towards air gap surface, four permanent magnet polarities below adjacent two stator tooths are interspersed, and promptly are NS-SN and distribute; Each coil of armature winding all is across on the stator tooth successively in the three-phase set; Wherein, armature winding one has 6 concentrated armature coils in the three-phase set, and first concentrates armature coil and second to concentrate armature coil radially relative, oppositely polyphone or and connect back composition A phase armature winding; The 3rd concentrates armature coil and the 4th to concentrate armature coil radially relative, oppositely polyphone or and connect back composition B phase armature winding; The 5th concentrates armature coil and the 6th to concentrate armature coil radially relative, oppositely polyphone or and connect back composition C phase winding; Excitation winding has 6 central excitation coils when being double-deck, during for individual layer 3 central excitation coils, first excitation winding pole coil wherein, second excitation winding pole coil, the 3rd excitation winding pole coil, the 4th excitation winding pole coil, the 5th excitation winding pole coil, the 6th excitation winding pole coil is concentrated winding, be across in the groove that adjacent two stator tooths open, can be distributed with two coils in each groove is double-decker, and two coil electricity polarity unanimities in the same groove, or the coil that only distributes in each groove is a single layer structure, above-mentioned several central excitation coils order head and the tail polyphone successively connect, and form single-phase excitation winding.
Stator is that magnetic conductive iron and permanent magnet are assembled, and wherein permanent magnet is mounted on the tooth surface of stator.No permanent magnet and winding on the rotor; Rotor is a straight trough, is suitable for the brushless direct-current operation; Or be skewed slot, be suitable for the brushless ac operation.In slotting, settles stator tooth excitation winding; Excitation winding is for concentrating winding, is bilayer or individual layer is arranged.
As shown in Figure 1, when rotor during in this position, rotor has a tooth and first to concentrate armature coil and second to concentrate a permanent magnet of armature coil to align respectively, the direction of magnetization according to permanent magnet, permanent magnet flux direction in two armature coils is opposite but numerical value is identical, and this moment the numerical value maximum.Therefore, if apply the electric excitation magnetic potential identical respectively with the permanent magnetic potential direction by first excitation winding pole coil and the 4th excitation winding pole coil, then can increase linkage to the first and concentrate the armature coil and second magnetic flux of concentrating in the armature coil, thereby increase the electromotive force that induces in the winding.On the contrary,, make the electro-magnetic flux of generation opposite, then can reduce first and concentrate the armature coil and the second synthetic magnetic linkage of concentrating in the armature coil with the permanent magnet flux direction if change the exciting current direction, and then the electromotive force that reduces to respond in the armature winding.As seen, just can regulate by the electric exciting current size and Orientation that changes in the excitation winding permanent magnetic field, thereby can overcome the shortcoming in the above-mentioned pure permanent-magnetic electric machine, make this composite excitation type magnetic flux reverse motor adopt concentrate winding and rotor not under the condition of skewed slot, can obtain to be in close proximity to static characteristics such as magnetic linkage that trapezoidal wave distributes, back electromotive force, thereby make the present invention be more suitable for Alternating Current Governor System element as the brushless direct-current type of drive.In addition, also can pass through the rotor chute certain angle, obtain comparatively sinusoidal back electromotive force, make the present invention be suitable for Alternating Current Governor System element as the brushless ac type of drive.
In addition, the characteristics on this electric machine structure cause its unloaded air gap flux density bigger, and motor has stronger torque fan-out capability, and power density is higher; Simultaneously, armature winding and excitation winding all are to concentrate winding, and the end is short, and resistance is less, and efficient is higher.
Beneficial effect:
1. structurally kept magneto magnetic flux reverse motor compactness, simple, robustness is good, the advantage that is suitable for high-speed cruising;
2. on performance, kept the advantage that the permanent-magnetic electric machine torque is exerted oneself greatly, power density is high, efficient is high;
3. the electric excitation winding of a cover that increases need not to increase under the condition of motor volume and can lay;
4. armature in the motor and excitation two cover windings all adopt concentrated winding, and the end is shorter;
5. can with rotor straight trough or skewed slot, thereby obtain trapezoidal wave or sinusoidal wave back electromotive force according to the different performance demand;
6. simple with existing mixed excitation electric machine (comprising rotor permanent-magnet type and stator permanent magnetic type) structure compared, excitation winding can not take the groove area of armature winding, can reduce a part of stator core on the contrary, and development easily.
Description of drawings
Fig. 1 is stator of the present utility model, rotor, armature winding and double-deck excitation winding structural representation.Wherein have: stator 1, single-phase double-deck central excitation winding 2, the first central excitation coil 21, the second central excitation coil 22, the 3rd central excitation coil 23, the 4th central excitation coil 24, the 5th central excitation coil 25, the 6th central excitation coil 26, permanent magnet 3, armature winding 4, first concentrates armature coil 411, second to concentrate armature coil the 412, the 3rd to concentrate armature coil the 421, the 4th to concentrate armature coil the 422, the 5th to concentrate armature coil the 431, the 6th to concentrate armature coil 432 in the three-phase set, rotor 5, the groove 6 of arrangement stator excitation winding.
Fig. 2 is stator of the present utility model, rotor, armature winding and individual layer excitation winding structural representation.Wherein have: stator 1, single-phase individual layer central excitation winding 2, the first central excitation coil 21, the second central excitation coil 22, the 3rd central excitation coil 23, permanent magnet 3, armature winding 4, first concentrates armature coil 411, second to concentrate armature coil the 412, the 3rd to concentrate armature coil the 421, the 4th to concentrate armature coil the 422, the 5th to concentrate armature coil the 431, the 6th to concentrate armature coil 432 in the three-phase set, rotor 5, the groove 6 of arrangement stator excitation winding.
Embodiment
The utility model comprises stator, permanent magnet, armature winding in the three-phase set, single-phase central excitation winding and rotor; Each stator tooth has a sulculus at the crown middle part, stator tooth is divided into two tooth portions, at permanent magnet of each little tooth subordinate surface mount, two permanent magnet polarities under the same stator tooth are opposite, and the distribution of the magnet steel polarity under the adjacent stators tooth is staggered, if be permanent magnet polarity distribution N-S under first stator tooth, the permanent magnet polarity under two then adjacent with it stator tooths is S-N all, is interspersed in stator surface successively.Therefore, if the stator number of teeth is P
s, then one have 2P
sThe piece permanent magnet is mounted on the stator tooth surface.One total P
sIndividual stator tooth sulculus offers excitation winding, and excitation winding can adopt individual layer or double-decker.If individual layer excitation winding, then a total P
s/ 2 magnet exciting coils; If double-deck excitation winding, then a total P
sIndividual magnet exciting coil.Each coil of armature winding all is across on the stator tooth in the three-phase set, wherein, and armature winding one total P in the three-phase set
sIndividual concentrated armature coil is alternately distributed successively with the order of ABC three-phase, and is every by P
s/ 3 armature coils are formed, and each coil space that belongs to homophase differs 1080 °/P each other
s(space mechanism angle).If with 6 grooves of a stator, the mixed excited magnetic pass reverse motor of 4 utmost points of rotor is an example, then first concentrates armature coil to concentrate armature coil radially relative (space differs 180 °) with second, and A phase armature winding is formed in order polyphone (or and connecting) back; The 3rd concentrates armature coil to concentrate armature coil radially relative (space differs 180 °) with the 4th, and B phase armature winding is formed in order polyphone (or and connecting) back; The 5th concentrates armature coil to concentrate armature coil radially relative (space differs 180 °) with the 6th, and C phase armature winding is formed in order polyphone (or and connecting) back; For 2 armature winding coils forming the A phase, first concentrating coil and second concentrating coil are at any rotor-position, and the magnetic linkage quantity equidirectional of linkage is opposite in its winding, need oppositely polyphone composition A phase, and situation is similar mutually with C mutually to B.Armature winding is for concentrating winding, and excitation winding is also for concentrating winding.If adopt double-deck excitation winding, then the first central excitation coil to the, six central excitation coils join end to end successively, form single-phase excitation winding, and two magnet exciting coil sense of current unanimities in the same groove; If adopt the individual layer excitation winding, then the first central excitation coil to the, three central excitation coils join end to end successively, form single-phase excitation winding.Stator is that magnetic conductive iron and permanent magnet are assembled.Rotor is straight trough or skewed rotor, has not both had permanent magnet on the rotor and has not also had winding.Permanent magnet is other types permanent magnetic materials such as ferrite, SmCo or neodymium iron boron.
When the obstructed electric current of excitation winding, when rotor when the permanent magnet different with two polarity under the same stator tooth aligns respectively in rotary course, the permanent magnet flux linkage that permanent magnet produced will be opposite to the direction of the concentrated armature coil of each stator, thereby produce the flux-reversal effect, the permanent magnetism magnetic linkage that causes institute's linkage in every phase armature winding is a bipolarity.What the present invention was the most key is to leave a groove area at stator tooth towards the crown middle part of air gap and settle single-phase excitation winding, wherein double-deck (or individual layer) winding of placement in each excitation winding groove.
Is example as Fig. 1 with stator 6 grooves/rotor 4 utmost point motors, the magnetic flux reverse motor that the utlity model has the magnetic field regulating power comprises stator core 1 and rotor core 5, rotor 5 is positioned at the inside of stator 1, and (rotor 5 also can be positioned at the outside of stator 1, form outer-rotor structure), stator 1 and rotor 5 all are salient-pole structure, wherein the stator core part is made up of magnetic conductive iron, stator has 6 teeth, and on each stator tooth, having a sulculus 6 to settle single-phase double-deck excitation winding 2, stator 1 is provided with armature winding 4 and 12 permanent magnets 3 in the three-phase set;
First winding coil 421 is radially relative with second winding coil 422 mutually to concentrate the B of winding 4, and each winding coil is placed in two side channels of each tooth in the stator 1, and above-mentioned two concentrated winding coils oppositely polyphone or and connect and form the B phase;
Excitation winding 2 one has 6 concentrating coils, places each stator tooth towards the space 6 that air gap is slotted, and is double-deck discharging modes.Wherein first excitation winding pole coil 21, second excitation winding pole coil 22, the 3rd excitation winding pole coil 23, the 4th excitation winding pole coil 24, the 5th excitation winding pole coil 25, the 6th excitation winding pole coil 26 are concentrated winding, be across in the groove of adjacent two stator tooths, being distributed with two coils in each groove is double-decker, two coil electricity polarity unanimities in the same groove.Above-mentioned 6 coils order head and the tail successively are connected in series, and form single-phase double-deck excitation winding.
6 tooth surfaces at stator 1 mount 12 permanent magnets 3 successively, and two permanent magnet polarities under each stator tooth are opposite, and two permanent magnet polarities under adjacent two stator tooths distribute staggered, i.e. NS-SN-NS-SN-NS-SN.
When rotor during in position shown in Figure 1, rotor 5 has a tooth and first to concentrate armature coil 411 and second to concentrate a permanent magnet 3 under the armature coil 412 relative respectively, the direction of magnetization according to permanent magnet 3, permanent magnet flux direction in two coils is opposite but numerical value is identical, and this moment the numerical value maximum.Therefore, if apply the electric excitation magnetic potential identical respectively with the permanent magnetic potential direction by first excitation winding pole coil 21 and the 4th excitation winding pole coil 24, then can increase linkage to the first and concentrate the armature coil 411 and second magnetic flux of concentrating in the armature coil 412, thereby increase the electromotive force that induces.On the contrary,, make the electro-magnetic flux of generation opposite, then can reduce first and concentrate the armature coil 411 and the second synthetic magnetic linkage of concentrating in the armature coil 412 with the permanent magnet flux direction if change the sense of current, and then the electromotive force that reduces to respond to.Concentrate the B of armature winding 4 the same with the operation principle of C coil mutually mutually, can improve motor gas-gap magnetic field controllability greatly, thereby improve motor performance and operating efficiency.
The excitation winding of stator 6 grooves among Fig. 2/rotor 4 pole, mixed excitation type magnetic flux reverse motors adopts single layer structure, comprise stator core 1 and rotor core 5, rotor 5 is positioned at the inside of stator 1, and (rotor 5 also can be positioned at the outside of stator 1, form outer-rotor structure), stator 1 and rotor 5 all are salient-pole structure, wherein the stator core part is made up of magnetic conductive iron, stator has 6 teeth, and on each stator tooth, having a sulculus 6 to settle single-phase individual layer excitation winding 2, stator 1 is provided with armature winding 4 and 12 permanent magnets 3 in the three-phase set.With the unique difference of Fig. 1, excitation winding 2 one has 3 concentrating coils, places each stator tooth towards the space 6 that air gap is slotted, and is the individual layer discharging modes.Wherein first excitation winding pole coil 21, second excitation winding pole coil 22, the 3rd excitation winding pole coil 23 are concentrated winding, are across in the groove of adjacent two stator tooths, and being distributed with a coil in each groove is individual layer.Above-mentioned 3 coils order head and the tail successively are connected in series, and form single-phase individual layer excitation winding.Its method of regulating magnetic field is similar to double-deck excitation winding, repeats no more.
Claims (4)
1. the magnetic flux reverse motor with magnetic field regulating power is characterized in that this motor comprises: fluting (6) on armature winding (4), rotor (5) and the stator tooth in stator (1), single-phase central excitation winding (2), permanent magnet (3), the three-phase set; Each stator tooth middle part has a groove (6) towards air gap and places single-phase central excitation winding (2); Be pasted with two mutually opposite permanent magnets of polarity (3) at each stator tooth towards air gap surface, four permanent magnet polarities below adjacent two stator tooths are interspersed, and promptly are NS-SN and distribute; Each coil of armature winding in the three-phase set (4) all is across on the stator tooth successively; Wherein, armature winding (4) one has 6 concentrated armature coils in the three-phase set, and first concentrates armature coil (411) and second to concentrate armature coil (412) radially relative, oppositely polyphone or and connect back composition A phase armature winding; The 3rd concentrates armature coil (421) and the 4th to concentrate armature coil (422) radially relative, oppositely polyphone or and connect back composition B phase armature winding; The 5th concentrates armature coil (431) and the 6th to concentrate armature coil (432) radially relative, oppositely polyphone or and connect back composition C phase winding; Excitation winding (2) has 6 central excitation coils when being double-deck, during for individual layer 3 central excitation coils, first excitation winding pole coil (21) wherein, second excitation winding pole coil (22), the 3rd excitation winding pole coil (23), the 4th excitation winding pole coil (24), the 5th excitation winding pole coil (25), the 6th excitation winding pole coil (26) is concentrated winding, be across in the groove (6) that adjacent two stator tooths open, can be distributed with two coils in each groove is double-decker, and two coil electricity polarity unanimities in the same groove, or the coil that only distributes in each groove is a single layer structure, above-mentioned several central excitation coils order head and the tail polyphone successively connect, and form single-phase excitation winding.
2. a kind of magnetic flux reverse motor with magnetic field regulating power according to claim 1 is characterized in that stator (1) is that magnetic conductive iron and permanent magnet (3) are assembled, and wherein permanent magnet (3) is mounted on the tooth surface of stator (1).
3. a kind of magnetic flux reverse motor with magnetic field regulating power according to claim 1 is characterized in that rotor (5) upward no permanent magnet and winding; Rotor is a straight trough, is suitable for the brushless direct-current operation; Or be skewed slot, be suitable for the brushless ac operation.
4. a kind of magnetic flux reverse motor with magnetic field regulating power according to claim 1 is characterized in that settling excitation winding (2) in stator (1) tooth is slotted (6); Excitation winding (2) is for concentrating winding, is bilayer or individual layer is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202358769U CN201536282U (en) | 2009-09-25 | 2009-09-25 | Flux reversal motor with magnetic field regulating capabilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202358769U CN201536282U (en) | 2009-09-25 | 2009-09-25 | Flux reversal motor with magnetic field regulating capabilities |
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| CN201536282U true CN201536282U (en) | 2010-07-28 |
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| CN2009202358769U Expired - Fee Related CN201536282U (en) | 2009-09-25 | 2009-09-25 | Flux reversal motor with magnetic field regulating capabilities |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068956A2 (en) | 2011-11-10 | 2013-05-16 | Moteurs Leroy-Somer | Flux-switching electrical machine |
| CN106385153A (en) * | 2016-09-28 | 2017-02-08 | 华中科技大学 | Hybrid excitation Motor |
| CN111953167A (en) * | 2020-07-23 | 2020-11-17 | 江苏大学 | Novel switch magnetic flux hybrid excitation fault-tolerant motor |
| CN111969822A (en) * | 2019-09-26 | 2020-11-20 | 哈尔滨工业大学 | Mixed excitation multi-phase reluctance motor and power generation system |
| WO2023173567A1 (en) * | 2022-03-16 | 2023-09-21 | 江苏大学 | Single-winding double-excitation flux modulation motor and collaborative excitation design method therefor |
-
2009
- 2009-09-25 CN CN2009202358769U patent/CN201536282U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013068956A2 (en) | 2011-11-10 | 2013-05-16 | Moteurs Leroy-Somer | Flux-switching electrical machine |
| FR2982714A1 (en) * | 2011-11-10 | 2013-05-17 | Leroy Somer Moteurs | ELECTRIC FLOW-SWITCHING MACHINE |
| WO2013068956A3 (en) * | 2011-11-10 | 2013-08-15 | Moteurs Leroy-Somer | Flux-switching electrical machine |
| CN103931088A (en) * | 2011-11-10 | 2014-07-16 | 利莱森玛电机公司 | Flux-switching electrical machine |
| US9698659B2 (en) | 2011-11-10 | 2017-07-04 | Moteurs Leroy-Somer | Flux-switching electrical machine |
| CN106385153A (en) * | 2016-09-28 | 2017-02-08 | 华中科技大学 | Hybrid excitation Motor |
| CN106385153B (en) * | 2016-09-28 | 2019-03-05 | 华中科技大学 | A kind of mixed excitation electric machine |
| CN111969822A (en) * | 2019-09-26 | 2020-11-20 | 哈尔滨工业大学 | Mixed excitation multi-phase reluctance motor and power generation system |
| CN111969822B (en) * | 2019-09-26 | 2023-04-18 | 哈尔滨工业大学 | Mixed excitation multi-phase reluctance motor and power generation system |
| CN111953167A (en) * | 2020-07-23 | 2020-11-17 | 江苏大学 | Novel switch magnetic flux hybrid excitation fault-tolerant motor |
| CN111953167B (en) * | 2020-07-23 | 2023-06-09 | 江苏大学 | Switch magnetic flux hybrid excitation fault-tolerant motor |
| WO2023173567A1 (en) * | 2022-03-16 | 2023-09-21 | 江苏大学 | Single-winding double-excitation flux modulation motor and collaborative excitation design method therefor |
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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: 20100728 Termination date: 20130925 |