CN202374153U - Five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles - Google Patents
Five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles Download PDFInfo
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- CN202374153U CN202374153U CN2011204355175U CN201120435517U CN202374153U CN 202374153 U CN202374153 U CN 202374153U CN 2011204355175 U CN2011204355175 U CN 2011204355175U CN 201120435517 U CN201120435517 U CN 201120435517U CN 202374153 U CN202374153 U CN 202374153U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles, which solves the problems such as low motor efficiency, small torque, low motor power density, small speed regulation range and the like in the prior art. The motor comprises a stator and a rotor, wherein the stator has five-phase star connected windings, and the rotor rotates relative to the windings; the rotor is composed of an outer wheel hub, a magnetic ring, a permanent-magnet steel sheet, an end cover and a bearing; the stator is composed of a central support, a silicon steel sheet laminated structure, copper wire windings and five position sensors; and the position sensors are embedded on tooth grooves of the silicon steel sheet laminated structure. According to the structure, the five-phase windings are switched over continuously, so that at least four-phase windings work simultaneously, the revolving speed is not reduced significantly when the saturated condition is reached, the locating torque is large and the pulsation is low; and the reaction speed is fast, sufficient torque can be generated for stable operation without damaging the motor and a controller under the conditions of the locked rotor and the low speed, the start-up is smooth, and the power density is high.
Description
Technical field
The utility model relates to a kind of dc brushless motor, particularly is used for five phase permanent-magnet synchronous direct current brushless electric machines of electric motor car.
Background technology
Along with the development of market economy and industry technology, the consumer is also improving constantly the understanding and the requirement of product at present.Various places motor manufacturer is constantly attempting in all sorts of ways raising electric efficiency and torque, and being intended to provides performance more stable to market, the motor of the consumer demand of more fitting.As adopt increase magnet steel magnetic flux, and change stator thickness, change stator and hub diameter etc.Certainly above the whole bag of tricks also can solve the problem of certain aspect.But the factor that is restricted is also many, the control that magnet steel magnetizes, and the absolute value of moment of inertia was very big when the increase of stator thickness made electric motor starting, and the electric motor starting electric current is bigger, and the motor jitter amplitude is big, and the quality of position transducer and KZQ controller is bigger.Increase stator and hub diameter and can make that again production cost increases substantially.
Summary of the invention
In order to overcome above-mentioned defective, the purpose of the utility model is the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car that provide a kind of high rotating speed, high pulling torque, stable performance and cost relatively low.
In order to achieve the above object; The utility model is used for five phase permanent-magnet synchronous direct current brushless electric machines of electric motor car; Comprise stator and form with respect to said winding rotor rotated with five phase Y-connection windings; Said winding is in the commutation of the position of corresponding rotor: wherein, described rotor is made up of outer wheel hub, magnetic guiding loop, permanent magnetic steel sheet, end cap, bearing; In the said outer wheel hub magnetic guiding loop is arranged, some permanent magnetic steel sheet magnetic poles are arranged in the said magnetic guiding loop, said wheel hub both sides are connected with corresponding end cap respectively, bearing is housed in the said end cap, and said bearing inboard is fixed on the motor shaft; Described stator is made up of center bearing bracket, silicon steel sheet stepped construction, copper cash winding, five position transducers; Said position transducer is embedded on the teeth groove of silicon steel sheet stepped construction, and said copper cash winding is embedded in the groove of silicon steel sheet stepped construction, and said silicon steel sheet stepped construction is fixed on the center bearing bracket cylindrical, and said center bearing bracket is fixed on the motor shaft through the screens of flat key groove.
Wherein, said position transducer is separately fixed on the teeth groove of corresponding stator.
Wherein, Also comprise the electric machine controller that is connected respectively with five position transducers; Position transducer is transformed into decoded signal with the position of rotation of rotor and exports controller to; Said controller is according to each the phase winding predetermined order conducting of the said stator of signal controlling that receives, and the stator phase current is pressed predetermined order commutation with the rotating magnetic field of rotor.
Wherein, the diameter of said stator is 180mm-300mm.
Wherein, said stator is provided with 5-100 line embedding groove.
Above-mentioned structure is because the alternate continuous switching of winding when work is worked so can obtain four phase windings at least simultaneously; The obvious step-down of rotating speed meeting when common three motors get into saturation condition; And moment of torsion is also less, and this motor rotating speed when getting into saturation condition does not obviously descend, and moment of torsion also can be bigger by about 20% than common three motors; So winding utilization is improved, electric efficiency further improves; Because this motor adopts five phase windings; So whole spindle all adopts short square winding, three phase electric machine is when nominal torque, and rotor torque change amount on diverse location is very big; Especially when the slow-speed of revolution, more be easy to generate torque pulsation; Electric bicycle just belongs to Low speed electric motor with motor itself, and five-phase induction motor has adopted polyphase windings just, many torque pulsation problem is solved in magnetic field; Have wideer speed adjustable range, can be without deceleration across-the-line starting load, reaction speed is fast, and electro mechanic time constant is little; Be about tens seconds to a few tens of milliseconds, motor location moment of torsion is big, and it is little to pulse, and starting is level and smooth; Can under stall and low speed, move, can produce enough big torque under the stall situation and do not damage motor and controller, it is big well to have solved motor location moment of torsion; Big this conventional theoretical contradiction point of pulsation also can even running under very low rotating speed, and to be that per minute is several go to the tens speed fluctuations of walking around and only account for about 5% of total rotating speed rotating speed; Mostly common three phase electric machine is single-phase work, so motor is easy saturated, and five-phase induction motor is the double winding parallel operation; So extended the saturation depth of motor widely, the entire job platform widens 20% than general alternating current machine workbench, makes power of motor density improve greatly.
Description of drawings
Fig. 1 is five phase winding syndeton sketch mapes of the specific embodiment of the utility model.
Specific embodiments
Below in conjunction with accompanying drawing and embodiment to further explain of the present invention.
As shown in the figure, the utility model is used for five phase non-brush permanent-magnet DC motors of electric motor car, comprises stator with Y-connection winding 1 and forms with respect to said winding rotor rotated, and said winding is in the position of rotation commutation of response rotor.A, B, C, D, E are five phase windings of motor among the figure, are respectively A phase, B phase, C phase, D phase, E phase, and distribution mode is a star connection.HA, HB, HC, HD, HE are five position transducers of motor; HA, HB, HC, HD, HE can be Hall; Also can be light-sensitive element, it mainly act as: five position transducers are passed to five phase controllers with position signalling and are deciphered, thus the corresponding phase line work of decision motor.
The five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car of said structure; Because alternate continuous switching when work is worked so can obtain four phase windings at least simultaneously, the course of work does; Be that four phase windings are worked simultaneously at every turn; Last bridge two-phase, following bridge two-phase draws upper and lower bridge conducting truth table according to corresponding position transducer decoding.The course of work of comparing three phase electric machine be each two work mutually and upper and lower bridge each one be conducted.The situation of its margin of power and entering saturation region has raising by a relatively large margin.Rotating speed can obviously not descend when motor got into saturation condition, and moment of torsion also can be bigger by about 20% than common three phase electric machine, so winding utilization is improved, electric efficiency further improves;
Secondly because this motor adopts five phase windings; So whole spindle all adopts the short distance winding; Motor is when nominal torque, and rotor torque change amount on diverse location is very big, especially when the slow-speed of revolution, more is easy to generate torque pulsation; This motor has adopted polyphase windings just, many torque pulsation problem is solved in magnetic field; Moreover the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car can be loaded without the deceleration across-the-line starting; Because this machine operation principle is for being that four phase windings are worked simultaneously at every turn; And upper and lower bridge respectively has two groups of windings to work simultaneously; The location moment of torsion of the former three phase electric machine simplex winding of its location torque ratio work is wanted big nearly 10N.M, so but general electric motor car high-speed starting.Reaction speed is fast; Electro mechanic time constant is little, can reach tens seconds to a few tens of milliseconds, can under stall and low speed, move; Enough big torque be can produce under the stall situation and motor and controller do not damaged; Even also can even running under very low rotating speed, total to be per minute several goes to tens fluctuations of speed when changeing and only account for about 5% of rotating speed for rotating speed, starting performance be good.
Specific embodiment as the utility model; Also comprise five position transducers and the controller that is connected respectively with said position transducer; Position transducer is transformed into signal with the position of rotation of rotor and passes to controller; Said controller is according to each the phase winding predetermined order conducting of the said stator of signal controlling that receives, and the stator phase current is pressed predetermined order commutation with the rotating magnetic field of rotor.Simple in structure, reliable, easy to maintenance, operational efficiency is high.
The five phase permanent-magnet synchronous direct current brushless electric machines of the utility model; Permanent magnetic steel sheet number of poles on the magnetic guiding loop in the rotor is made up of the 2 pairs of utmost point-100 pair utmost points; Corresponding stator circumferentially is provided with 5-100 groove, and stator diameter is 180mm-300mm, and following advantage is arranged: 1, motor is the fractional-slot motor; Thereby starting torque is big the pulsation moment of torsion little and shake little, steadily.2, magnetic circuit is even, and Distribution of Magnetic Field is even, and the winding arrangement is reasonable, not only can boost productivity but also can improve system effectiveness.
Present domestic electric motor car industry generally adopts three-phase brushless dc motor, and five-phase induction motor will be higher than three phase electric machine in the frequency of circuit aspect adopting.The five-phase induction motor course of work is on two, twice windings are worked simultaneously, and the effective workbench of motor is compared common electric machine and widened 20%, and the work of three phase electric machine be singly go up, single winding work down, motor is prone to saturated; The five-phase induction motor winding adopts parallel operation, in running, just in case have one to damage mutually, also can not influence operating state, has an enormous advantage so five-phase induction motor is compared three phase electric machine.
The utility model is not limited to above-mentioned execution mode; No matter on its shape or structure, do any variation; Every to utilize the above-mentioned five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car all be a kind of distortion of the present invention, all should think in the utility model protection range.
Claims (5)
1. five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car; It is characterized in that; Comprise stator and form with respect to said winding rotor rotated with five phase Y-connection windings; Said winding is in the commutation of the position of corresponding rotor: wherein, described rotor is made up of outer wheel hub, magnetic guiding loop, permanent magnetic steel sheet, end cap, bearing; In the said outer wheel hub magnetic guiding loop is arranged, some permanent magnetic steel sheet magnetic poles are arranged in the said magnetic guiding loop, said wheel hub both sides are connected with corresponding end cap respectively, bearing is housed in the said end cap, and said bearing inboard is fixed on the motor shaft; Described stator is made up of center bearing bracket, silicon steel sheet stepped construction, copper cash winding, five position transducers; Said position transducer is embedded on the teeth groove of silicon steel sheet stepped construction, and said copper cash winding is embedded in the groove of silicon steel sheet stepped construction, and said silicon steel sheet stepped construction is fixed on the center bearing bracket cylindrical, and said center bearing bracket is fixed on the motor shaft through the screens of flat key groove.
2. the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car as claimed in claim 1 is characterized in that said position transducer is separately fixed on the teeth groove of corresponding stator.
3. the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car as claimed in claim 1; It is characterized in that; Also comprise the electric machine controller that is connected respectively with five position transducers; Position transducer is transformed into decoded signal with the position of rotation of rotor and exports controller to, and said controller is according to each the phase winding predetermined order conducting of the said stator of signal controlling that receives, the stator phase current with the rotating magnetic field of rotor by predetermined order commutation.
4. the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car as claimed in claim 1 is characterized in that the diameter of said stator is 180mm-300mm.
5. the five phase permanent-magnet synchronous direct current brushless electric machines that are used for electric motor car as claimed in claim 1 is characterized in that said stator is provided with 5-100 line embedding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204355175U CN202374153U (en) | 2011-11-04 | 2011-11-04 | Five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204355175U CN202374153U (en) | 2011-11-04 | 2011-11-04 | Five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles |
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| Publication Number | Publication Date |
|---|---|
| CN202374153U true CN202374153U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204355175U Expired - Lifetime CN202374153U (en) | 2011-11-04 | 2011-11-04 | Five-phase permanent-magnet synchronous direct-current brushless motor for electric vehicles |
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| CN (1) | CN202374153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929022A (en) * | 2014-04-30 | 2014-07-16 | 常州市裕成富通电机有限公司 | Assembling method for wheel hub motor rotor |
| US11646618B2 (en) | 2018-10-31 | 2023-05-09 | Optiphase Drive Systems, Inc. | Electric machine with permanent magnet rotor |
-
2011
- 2011-11-04 CN CN2011204355175U patent/CN202374153U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929022A (en) * | 2014-04-30 | 2014-07-16 | 常州市裕成富通电机有限公司 | Assembling method for wheel hub motor rotor |
| US11646618B2 (en) | 2018-10-31 | 2023-05-09 | Optiphase Drive Systems, Inc. | Electric machine with permanent magnet rotor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |