CN104135099A - Motor for electromobile - Google Patents
Motor for electromobile Download PDFInfo
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- CN104135099A CN104135099A CN201410382796.1A CN201410382796A CN104135099A CN 104135099 A CN104135099 A CN 104135099A CN 201410382796 A CN201410382796 A CN 201410382796A CN 104135099 A CN104135099 A CN 104135099A
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- magnetic
- motor
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- square
- electric motor
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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 invention relates to a motor for an electromobile. An opening slot of the motor for the electromobile is provided of a magnetic structure, and the reluctancy Kr of the magnetic structure ranges from 0.7 to 0.8. The reluctancy Kr, which is equal to one, of a conventional PWM square wave brushless direct current motor is changed to range from 0.7 to 0.8, the motor is easily controlled in a field weakening control mode, the d axis and the q axis of the motor are coincident with the N axis and the S axis of a coordinate system, right angles are formed at any time when the magnetic lines are cut by a coil winding, the output torque is maximum, Hall starting is truly avoided, and the starting noise of the motor is reduced. It is thus clear that the motor for the electromobile can be controlled in a field weakening mode, the torque of the motor is maximum, and the noise of the motor is small.
Description
Technical field
The present invention relates to novel environment friendly vehicle technology field, relate in particular to a kind of motor of electric motor car.
Background technology
PWM design square wave direct current brushless electric machine is generally selected in existing electric motor car, controls the switching frequency of three-phase bridge by PWM frequency, with the flow through effective current of motor winding of Duty ratio control, controls motor speed.Now, along with neuron control technology in control technology, without maturation and the application of the technology such as the back electromotive force sampling control technology in Hall, fuzzy control technology, hardware controls chip is as a large amount of employings of 16,32 chips, computational speed is more and more faster, and vector S VPWM and control technology thereof also reach its maturity.But the design of existing PWM square-wave motor can not meet existing control technology, the electric motor car of controlling with PWM design square wave direct current brushless electric machine, motor magnetic circuit is in rich magnetic state, rare-earth permanent magnet large usage quantity, cost accounts for 1/4 left and right of whole motor.Meanwhile, after control unit mates with motor, motor noise is larger, motor torque ripple is still obvious, and after car load assembling, the comfort level of riding does not reach people's desired value far away, be only the walking-replacing tool that meets people's trip, visible, change existing PWM design of electrical motor extremely urgent.
Summary of the invention
The object of the invention is to propose a kind of motor of electric motor car, the mode of available weak magnetic is controlled, and motor torque maximization and motor noise are little.
For reaching this object, the present invention by the following technical solutions:
A motor of electric motor car, the open slot of described motor of electric motor car arranges magnetic texure, and the reluctancy Kr of this magnetic texure is 0.7-0.8.
Wherein, described motor of electric motor car is vector S VPWM sinusoidal wave motor.
Wherein, the motor gas-gap of described vector S VPWM sinusoidal wave motor is 0.8mm.
Wherein, described magnetic texure comprises square-section magnetic and trapezoid cross section magnetic, the cross section of described square-section magnetic comprises long limit and minor face, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, and described long limit was connected with the described upper long end, and described square-section magnetic and trapezoid cross section magnetic are one-body molded.
Wherein, described square-section magnetic is square magnetic, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
Wherein, described magnetic texure comprises the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic, the cross section of described the first square-section magnetic comprises long limit and minor face, the cross section of described the second square-section magnetic comprises bottom and upper segment, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, described top, below and the upper long end equal in length, described long limit is connected with described top, describedly be connected with the described upper long end below, described the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic are one-body molded.
Wherein, described the first square-section magnetic is square magnetic, and described the second square-section magnetic is cylindrical magnetic body, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
Wherein, described motor of electric motor car is 198 motors, and described 198 motors comprise 51 open slots, and each open slot arranges a described magnetic texure.
Wherein, described motor of electric motor car is 253 motors, and described 253 motors comprise 46 open slots, and each open slot arranges a described magnetic texure.
Wherein, described open slot and magnetic texure are for removably connecting.
Beneficial effect of the present invention is: a kind of motor of electric motor car, and the open slot of described motor of electric motor car arranges magnetic texure, and the reluctancy Kr of this magnetic texure is 0.7-0.8.The reluctancy Kr=1 of conventional PWM square wave direct current brushless electric machine is changed to Kr=0.7-0.8, be conducive to adopt weak magnetic control mode to control motor, motor d axle, q axle are overlapped with N axle, the S axle of coordinate system, allow coil windings when cutting magnetic line, form at any time right angle, reach output torque maximum, realize starting without Hall truly, reduce electric motor starting noise.Visible, this motor of electric motor car, the mode of available weak magnetic is controlled, and motor torque maximization and motor noise are little.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during the embodiment of the present invention is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to the content of the embodiment of the present invention and these accompanying drawings other accompanying drawing.
Fig. 1 is the partial structurtes schematic diagram of motor of electric motor car provided by the invention.
Fig. 2 is the sectional view of magnetic texure provided by the invention.
Embodiment
For the technical scheme of technical problem that the present invention is solved, employing and the technique effect that reaches clearer, below in conjunction with accompanying drawing, the technical scheme of the embodiment of the present invention is described in further detail, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those skilled in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is the partial structurtes schematic diagram of motor of electric motor car 1 provided by the invention.The motor of electric motor car 1 of the embodiment of the present invention, can be applicable to all kinds of electric motor cars.
A kind of motor of electric motor car 1, the open slot of described motor of electric motor car 1 arranges magnetic texure 2, and the reluctancy Kr of this magnetic texure 2 is 0.7-0.8.
This motor of electric motor car 1, the reluctancy Kr=1 of conventional PWM square wave direct current brushless electric machine is changed to Kr=0.7-0.8, be conducive to adopt weak magnetic control mode to control motor, motor d axle, q axle are overlapped with N axle, the S axle of coordinate system, allow coil windings when cutting magnetic line, form at any time right angle, reach output torque maximum, realize starting without Hall truly, motor reduces electric motor starting noise, even if also can really reach smooth starting at half hill-start.
Without Hall, start and adopt fixedly commutation frequency, the triggering signal pwm signal duty ratio that adds wonderful works power device, while test side voltage signal, in each triggering state, detect the corresponding position signalling of this state, as detecting corresponding position signalling, N continuous time is just switched to automatic synchronization mode, thereby guaranteed the smooth switching of motor, possessed good anti-interference, under light-load conditions, obtained good startup effect.
Visible, this motor of electric motor car 1, the mode of available weak magnetic is controlled, and motor torque maximization and motor noise are little.
Wherein, described motor of electric motor car 1 is vector S VPWM sinusoidal wave motor.
Adopt sinusoidal wave mode to control PWM square wave direct current brushless electric machine, when design of electrical motor, cannot really according to synchronous machine, design, thereby the complexity while having caused motor mathematical modeling, also directly caused control chip to be risen to after 32 machines by 8 machines, 16 machines, still can not fine control PWM square wave direct current brushless electric machine.The object that focuses on control of this problem---PWM square wave direct current brushless electric machine is to meet the motor that control technology requires.And vector S VPWM sinusoidal wave motor can adapt to this control technology requirement well.
Wherein, the motor gas-gap of described vector S VPWM sinusoidal wave motor is 0.8mm.
Please refer to Fig. 2, it is the sectional view of magnetic texure 2 provided by the invention.
Wherein, described magnetic texure 2 comprises square-section magnetic and trapezoid cross section magnetic, the cross section of described square-section magnetic comprises long limit and minor face, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, and described long limit was connected with the described upper long end, and described square-section magnetic and trapezoid cross section magnetic are one-body molded.
Preferably, described square-section magnetic is square magnetic, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
Wherein, described magnetic texure 2 comprises the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic, the cross section of described the first square-section magnetic comprises long limit and minor face, the cross section of described the second square-section magnetic comprises bottom and upper segment, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, described top, below and the upper long end equal in length, described long limit is connected with described top, describedly be connected with the described upper long end below, described the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic are one-body molded.
Preferably, described the first square-section magnetic is square magnetic, and described the second square-section magnetic is cylindrical magnetic body, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
Above two class formations, are all the embedding open slots in order to guarantee that magnetic texure 2 can be firm, and magnetic texure 2 drops out from open slot when preventing machine operation.As long as can reach this object, those skilled in the art can also design the magnetic texure 2 of other shapes, do not repeat herein.
Wherein, described motor of electric motor car 1 is 198 motors, and described 198 motors comprise 51 open slots, and each open slot arranges a described magnetic texure 2.
Wherein, described motor of electric motor car 1 is 253 motors, and described 253 motors comprise 46 open slots, and each open slot arranges a described magnetic texure 2.
198 motors and 253 motors are comparatively general lightweight motor model at present, and 198 motors are that motor diameter is the motor of 198mm, and 253 motors are that motor diameter is the motor of 253mm.The noise of this two classes motor is low, Stability Analysis of Structures, reliable, starting performance good and the life-span is long.
Wherein, described open slot and magnetic texure 2 are for removably connecting.
Magnetic texure 2 and open slot removably connect, and are convenient for changing the magnetic texure 2 of any one damage, are beneficial to the global optimization configuration of motor.
Motor of electric motor car 1 provided by the invention, the mode of available weak magnetic is controlled, and motor torque maximization and motor noise are little.
Above content is only preferred embodiment of the present invention, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (10)
1. a motor of electric motor car (1), is characterized in that, the open slot of described motor of electric motor car (1) arranges magnetic texure (2), and the reluctancy Kr of this magnetic texure (2) is 0.7-0.8.
2. motor of electric motor car according to claim 1 (1), is characterized in that, described motor of electric motor car (1) is vector S VPWM sinusoidal wave motor.
3. motor of electric motor car according to claim 2 (1), is characterized in that, the motor gas-gap of described vector S VPWM sinusoidal wave motor is 0.8mm.
4. motor of electric motor car according to claim 1 (1), it is characterized in that, described magnetic texure (2) comprises square-section magnetic and trapezoid cross section magnetic, the cross section of described square-section magnetic comprises long limit and minor face, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, described long limit was connected with the described upper long end, and described square-section magnetic and trapezoid cross section magnetic are one-body molded.
5. motor of electric motor car according to claim 4 (1), is characterized in that, described square-section magnetic is square magnetic, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
6. motor of electric motor car according to claim 1 (1), it is characterized in that, described magnetic texure (2) comprises the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic, the cross section of described the first square-section magnetic comprises long limit and minor face, the cross section of described the second square-section magnetic comprises bottom and upper segment, the cross section of described trapezoid cross section magnetic comprises the long end and the lower short end, the length on described long limit is greater than the length at the lower short end, the length on described long limit is less than the length at the long end, described top, below and the upper long end equal in length, described long limit is connected with described top, describedly be connected with the described upper long end below, described the first square-section magnetic, the second square-section magnetic and trapezoid cross section magnetic are one-body molded.
7. motor of electric motor car according to claim 6 (1), is characterized in that, described the first square-section magnetic is square magnetic, and described the second square-section magnetic is cylindrical magnetic body, and described trapezoid cross section magnetic is truncated cone-shaped magnetic.
8. motor of electric motor car according to claim 1 (1), is characterized in that, described motor of electric motor car (1) is 198 motors, and described 198 motors comprise 51 open slots, and each open slot arranges a described magnetic texure (2).
9. motor of electric motor car according to claim 1 (1), is characterized in that, described motor of electric motor car (1) is 253 motors, and described 253 motors comprise 46 open slots, and each open slot arranges a described magnetic texure (2).
10. motor of electric motor car according to claim 1 (1), is characterized in that, described open slot and magnetic texure (2) are for removably connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382796.1A CN104135099A (en) | 2014-08-05 | 2014-08-05 | Motor for electromobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382796.1A CN104135099A (en) | 2014-08-05 | 2014-08-05 | Motor for electromobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104135099A true CN104135099A (en) | 2014-11-05 |
Family
ID=51807673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410382796.1A Pending CN104135099A (en) | 2014-08-05 | 2014-08-05 | Motor for electromobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104135099A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05103453A (en) * | 1991-10-07 | 1993-04-23 | Toshiba Corp | Salient-pole brushless dc motor |
| CN1184358A (en) * | 1996-12-04 | 1998-06-10 | 株式会社三协精机制作所 | Motor |
| CN1787333A (en) * | 2004-12-08 | 2006-06-14 | 三星电子株式会社 | Motor with permanent magnet |
| US20110080931A1 (en) * | 2008-05-05 | 2011-04-07 | Scuola Normale Superiore | Circular semiconductor lasers having lattices for vertical emission |
| CN103580559A (en) * | 2012-07-25 | 2014-02-12 | 新安乃达驱动技术(上海)有限公司 | Motor controller of electric bicycle and control method thereof |
-
2014
- 2014-08-05 CN CN201410382796.1A patent/CN104135099A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05103453A (en) * | 1991-10-07 | 1993-04-23 | Toshiba Corp | Salient-pole brushless dc motor |
| CN1184358A (en) * | 1996-12-04 | 1998-06-10 | 株式会社三协精机制作所 | Motor |
| CN1787333A (en) * | 2004-12-08 | 2006-06-14 | 三星电子株式会社 | Motor with permanent magnet |
| US20110080931A1 (en) * | 2008-05-05 | 2011-04-07 | Scuola Normale Superiore | Circular semiconductor lasers having lattices for vertical emission |
| CN103580559A (en) * | 2012-07-25 | 2014-02-12 | 新安乃达驱动技术(上海)有限公司 | Motor controller of electric bicycle and control method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 克劳斯: "《电磁学》", 31 March 1979, 人民邮电出版社 * |
| 冈田隆夫等: "《电机学下》", 30 September 2003, 科学出版社 * |
| 林大道: "《电工基础》", 31 January 1964, 中国工业出版社 * |
| 王以真: "《实用磁路设计》", 30 November 1992, 天津科学技术出版社 * |
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| PB01 | Publication | ||
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Application publication date: 20141105 |