CN103580323A - Rotor improvement structure of wide-range-timing permanent magnet synchronous motor - Google Patents
Rotor improvement structure of wide-range-timing permanent magnet synchronous motor Download PDFInfo
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- CN103580323A CN103580323A CN201210269487.4A CN201210269487A CN103580323A CN 103580323 A CN103580323 A CN 103580323A CN 201210269487 A CN201210269487 A CN 201210269487A CN 103580323 A CN103580323 A CN 103580323A
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Abstract
The invention discloses a rotor improvement structure of a wide-range-timing permanent magnet synchronous motor. The rotor improvement structure comprises a rotor core. The rotor core is formed by overlapping and fixing silicon steel sheets through rivets, an assembling hole in shaft connection with a rotor is formed in the axis of the rotor core, a plurality of through holes parallel to the axis of the rotor core are formed in the rotor core, and magnetic steel bodies are arranged in the through holes. The structure of the motor rotor and the magnetic structure are optimized, air-gap field strength is lowered, permanent magnetic resistance is reduced, the aims of improving the highest rotating speed of the motor and improving the timing range of the motor are achieved at last, and the constant power range of the permanent magnet synchronous motor is greatly widened.
Description
Technical field
The present invention relates to a kind of rotor structure of synchronous machine, specifically refer to that the rotor of wide speed-regulation permanent-magnet synchronous motor improves structure.
Background technology
The existing motor being applied on electric automobile is divided into two kinds substantially, and the first is for adopting asynchronous machine frequency conversion drive mode: the rotating speed of motor (rotor speed) is less than the rotating speed of rotating magnetic field, thereby cries as asynchronous machine.It and induction machine are identical substantially.s=(ns-n)/ns。S is revolutional slip, and ns is rotational speed of magnetic field, and n is rotor speed.Asynchronous machine is to be interacted and produced electromagnetic torque by air-gap rotating magnetic field and rotor winding induced current, thereby realize energy converting between mechanical, be a kind of alternating current machine of mechanical energy, asynchronous motor is divided into two kinds of forms according to rotor structure: have squirrel-cage, wire wound asynchronous motor; Make the asynchronous machine of motor operation, because its rotor winding current is that induction produces, claim again induction motor.While adopting asynchronous machine frequency conversion drive mode to have low speed, torque is not enough, control precision is poor, frequency control scope is less, has larger difference, simultaneously with electric automobile low-speed big, high-revolving demand, asynchronous machine operating efficiency is lower, can greatly reduce the continual mileage of car load; And asynchronous machine volume and weight is larger, on vehicle, install more difficultly, adopt the mode of variable frequency speed modulation of asynchronous motor, the rated speed of asynchronous machine is generally in 3000rpm left and right, and maximum speed, in 5000 left and right, adopts the cooling mode of nature.During due to the asynchronous machine slow-speed of revolution, moment of torsion is not enough, can not meet the instructions for use of vehicle low-speed big (starting, acceleration, climbing), and maximum speed can not meet the requirement of the max. speed of vehicle, therefore, asynchronous machine need to be used in conjunction with multi-speed gear box, could meet the demand of car load.When vehicle is when starting to walk, accelerate, climbing, gearbox is placed in low grade, and now gearbox speed reducing ratio is large, and the output of motor passes to wheel after gearbox slows down, and meets the high pulling torque demand of vehicle; When vehicle is when running at high speed, gearbox is placed in top grade (speed ratio is less than 1), and now the output speed of motor passes to wheel after gearbox promotes, and meets the high speed demand of vehicle.
The second is for adopting permagnetic synchronous motor: synchronous generator, in order to realize the conversion of energy, need to have a D.C. magnetic field.And produce the direct current in this magnetic field, be called the exciting current of generator.According to the supply mode of exciting current, every generator that obtains exciting current from other power supply, is called separately excited dynamo, from generator acquisition field power supply itself, be called self-exciter.The permagnetic synchronous motor adopting exists speed adjustable range narrower, can not meet the high-speed requirement of electric automobile, need to install the deficiency that gearbox meets the performance requirement of car load additional, install additional after gearbox, overall structure is more complicated, volume is larger, install inconvenient, and cost is higher, adopt the mode of permagnetic synchronous motor, the rated speed of permagnetic synchronous motor is generally in 3000rpm left and right, maximum speed is in 6000 left and right, need to install gearbox additional equally, by adjusting the gear of gearbox, meet the demand under the different operating modes of car load.
Summary of the invention
The object of the present invention is to provide the rotor of wide speed-regulation permanent-magnet synchronous motor to improve structure, be arranged in synchronous machine, solve at present for problem more than the motor existence of electric automobile.
Object of the present invention is achieved through the following technical solutions:
The rotor of wide speed-regulation permanent-magnet synchronous motor improves structure, comprise rotor core, rotor core is formed by silicon steel plate stacking and fixes with rivet, on the axis of rotor core, be provided with the pilot hole for being connected with armature spindle, on described rotor core, be provided with the parallel through hole of axis a plurality of and rotor core, in through hole inside, magnet steel be installed.Rotor core is combined by silicon steel sheet stack, by rivet, the silicon steel sheet of stack is compressed, fixing, on rotor core, be provided with the parallel through hole of axis a plurality of and rotor core, in through hole inside, magnet steel is installed, with respect to traditional permanent magnet machine rotor integral body, it is the mode of permanent magnet, not only can improve the intensity of rotor core, and magnetic circuit is more rigorous, realistic application, that is: air-gap field, magnetic flux, magnetic field intensity etc. parameter can better be controlled and adjust, by optimizing structure and the magnetic structure of rotor, reduce air-gap field intensity, weaken permanent-magnet magnetic resistance, finally reach the maximum speed that improves motor, improve the object of the speed adjustable range of motor, the permanent power bracket of permagnetic synchronous motor is widened greatly, speed adjustable range can reach four times of base speed, thereby become advantages such as integrating the interior speed governing of low rotation speed large torque He compare Daheng power bracket, overcome the many disadvantages of current existing motor.
Between the outside of described magnet steel and through-hole side wall, be filled with epoxy resin.
On described pilot hole sidewall, be provided with the assembling bar that the keyway with armature spindle matches.Further, by assembling bar is set on pilot hole, assembling bar matches with the keyway on armature spindle, has overcome rotor core in the course of the work with respect to the rotation of armature spindle circumferencial direction, has further increased moment of torsion.
The present invention compared with prior art, has following advantage and beneficial effect:
The rotor of 1 wide speed-regulation permanent-magnet synchronous motor of the present invention improves structure, on rotor core, be provided with the parallel through hole of axis a plurality of and rotor core, in through hole inside, magnet steel is installed, with respect to traditional permanent magnet machine rotor integral body, it is the mode of permanent magnet, not only can improve the intensity of rotor core, and magnetic circuit is more rigorous, realistic application, the passage of magnetic circuit, magnetic flux, magnetic field intensity etc. parameter can better be controlled and adjust, by optimizing structure and the magnetic structure of rotor, reduce air-gap field intensity, weaken permanent-magnet magnetic resistance, finally reach the maximum speed that improves motor, improve the object of the speed adjustable range of motor, the permanent power bracket of permagnetic synchronous motor is widened greatly, speed adjustable range can reach four times of base speed, thereby become advantages such as integrating the interior speed governing of low rotation speed large torque He compare Daheng power bracket, overcome the many disadvantages of current existing motor,
The rotor of 2 wide speed-regulation permanent-magnet synchronous motors of the present invention improves structure, by assembling bar is set on pilot hole, assembling bar matches with the keyway on armature spindle, has overcome rotor core in the course of the work with respect to the rotation of armature spindle circumferencial direction, has further increased moment of torsion.
Accompanying drawing explanation
Fig. 1 is that the present invention assembles schematic diagram.
Mark and corresponding parts title in accompanying drawing:
12-rivet, 13-rotor core, 14-magnet steel, 15-through hole, 16-assembles bar.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the rotor of wide speed-regulation permanent-magnet synchronous motor of the present invention improves structure, comprise rotor core 13, rotor core 13 is formed and is used rivet 12 fixing by silicon steel plate stacking, on the axis of rotor core 13, be provided with the pilot hole for being connected with armature spindle, on pilot hole sidewall, be provided with the assembling bar 16 that the keyway with armature spindle matches; On rotor core 13, be provided with the parallel through hole 15 of axis a plurality of and rotor core 13, in through hole 15 inside, magnet steel 14 be installed, between the outside of magnet steel 14 and through hole 15 sidewalls, be filled with epoxy resin.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, and any simple modification, the equivalent variations in every foundation technical spirit of the present invention, above embodiment done, within all falling into protection scope of the present invention.
Claims (3)
1. the rotor of wide speed-regulation permanent-magnet synchronous motor improves structure, comprise rotor core (13), rotor core (13) is formed and is used rivet (12) fixing by silicon steel plate stacking, on the axis of rotor core (13), be provided with the pilot hole for being connected with armature spindle, it is characterized in that: on described rotor core (13), be provided with the parallel through hole (15) of axis a plurality of and rotor core (13), in through hole (15) inside, magnet steel (14) be installed.
2. the rotor of wide speed-regulation permanent-magnet synchronous motor according to claim 1 improves structure, it is characterized in that: between the outside of described magnet steel (14) and through hole (15) sidewall, be filled with epoxy resin.
3. the rotor of wide speed-regulation permanent-magnet synchronous motor according to claim 1 and 2 improves structure, it is characterized in that: on described pilot hole sidewall, be provided with the assembling bar (16) that the keyway with armature spindle matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210269487.4A CN103580323A (en) | 2012-07-31 | 2012-07-31 | Rotor improvement structure of wide-range-timing permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210269487.4A CN103580323A (en) | 2012-07-31 | 2012-07-31 | Rotor improvement structure of wide-range-timing permanent magnet synchronous motor |
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| Publication Number | Publication Date |
|---|---|
| CN103580323A true CN103580323A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210269487.4A Pending CN103580323A (en) | 2012-07-31 | 2012-07-31 | Rotor improvement structure of wide-range-timing permanent magnet synchronous motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065189A (en) * | 2014-06-06 | 2014-09-24 | 杭州微光电子股份有限公司 | Tile-shaped magnetic steel magnetism division fixing frame used for permanent magnet motor |
| CN104124847A (en) * | 2014-07-24 | 2014-10-29 | 西安交通大学 | Momentum wheel based on moving coil motor |
| WO2018008417A1 (en) * | 2016-07-06 | 2018-01-11 | パナソニック株式会社 | Magnetic plate laminate, manufacturing method therefor, and motor using this laminate |
| CN108092427A (en) * | 2017-12-19 | 2018-05-29 | 宁波安信数控技术有限公司 | A kind of rotor punching of magneto |
-
2012
- 2012-07-31 CN CN201210269487.4A patent/CN103580323A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104065189A (en) * | 2014-06-06 | 2014-09-24 | 杭州微光电子股份有限公司 | Tile-shaped magnetic steel magnetism division fixing frame used for permanent magnet motor |
| CN104065189B (en) * | 2014-06-06 | 2016-07-06 | 杭州微光电子股份有限公司 | A kind of tile-shaped magnet steel for magneto divides magnetically fixed frame |
| CN104124847A (en) * | 2014-07-24 | 2014-10-29 | 西安交通大学 | Momentum wheel based on moving coil motor |
| WO2018008417A1 (en) * | 2016-07-06 | 2018-01-11 | パナソニック株式会社 | Magnetic plate laminate, manufacturing method therefor, and motor using this laminate |
| JPWO2018008417A1 (en) * | 2016-07-06 | 2018-12-20 | パナソニック株式会社 | LAMINATE OF MAGNETIC PLATE, MANUFACTURING METHOD THEREOF, AND MOTOR USING THE LAMINATE |
| CN108092427A (en) * | 2017-12-19 | 2018-05-29 | 宁波安信数控技术有限公司 | A kind of rotor punching of magneto |
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Application publication date: 20140212 |