CN2064129U - Rare-earth permanent-magnetism synchronous motor - Google Patents
Rare-earth permanent-magnetism synchronous motor Download PDFInfo
- Publication number
- CN2064129U CN2064129U CN 90204588 CN90204588U CN2064129U CN 2064129 U CN2064129 U CN 2064129U CN 90204588 CN90204588 CN 90204588 CN 90204588 U CN90204588 U CN 90204588U CN 2064129 U CN2064129 U CN 2064129U
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- synchronous motor
- rare
- rotor
- earth permanent
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Abstract
The utility model relates to a rare-earth permanent-magnetism synchronous motor which is provided with a self-starting ability, belonging to the field of electrotechnics. The utility model is characterized in that a rotor is composed of cheap rare-earth permanent-magnetism materials, a rotor cage which has a deep groove structure and a laminated core which has an integral structure. The motor with load starts quickly and operates stably undersynchronized state. The utility model has the advantages of high efficiency, energy conservation, etc., which is suitable for textile industries, etc.
Description
The utility model relates to a kind of rare-earth permanent-magnet synchronous motor, belongs to electrical technology field.
Shortcomings such as a large amount of at present threephase asynchronouses that use have advantages such as simple in structure, cheap, and still, ubiquity efficient is low, and power factor is low.CN2031979u once disclosed a kind of " starter mechanism of self-starting permanent magnet synchronous micromotor ", but was only applicable to single-phase permanent-magnet synchronous motor, power in 10 watts, was of limited application, and did not relate to driving permanent magnet synchronous motor starting problem.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of rare-earth permanent-magnet synchronous motor with self-starting ability is provided.
The purpose of this utility model can realize by following measure:
The rare-earth permanent-magnet synchronous motor that is provided is made up of stator, rotor etc., and its stator and common threephase asynchronous stator are similar, and rotor then is made of axle (1), laminate patch iron core (2), permanent magnet poles (3) and conduction mouse cage (4).This rotor can be two utmost points, four utmost points or sextupole.The laminate patch iron core has overall structure, and permanent magnet poles is used cheap rare earth permanent-magnetic material, and the conduction mouse cage of rotor has deep groove structure, constitutes by cast aluminium or by the red copper welding.
During starting, the symmetrical fundamental current in the stator three-phase symmetric winding forms rotation speed n in air gap
1Rotating magnetic field, this rotating magnetic field is responded to Sf in the rotor mouse cage
1The electric current of frequency also is n thereby produce with respect to stator
1The magnetic field of rotating speed rotation, two magnetic fields rotate synchronously, produce asynchronous moment.Meanwhile, in stator winding, respond to (1-S) f with rotor with the permanent magnetic field of rotation speed n rotation
1The electric current of frequency forms the dynamic brake torque, because asymmetric and other harmonic effects of ac-dc axis magnetic circuit produces salient pole torque and harmonic torque, plays braking action.
During starting, asynchronous moment must overcome the braking action of above three kinds of moments of resistance, and motor is pulled in, enter synchronously after, rotor permanent magnet and stator current generation synchronising torque make motor stabilizing operate in synchronous regime.
Compared with prior art, the utlity model has following advantage:
1, efficient height can save energy about 10%;
2, power factor height is an example with 0.8 kilowatt motor, saves idle input more than 1 kilovar for every,
3, input current is little, thereby can save net capacity and reduce grid loss.
4, starting is smooth, and overload capacity is strong, and running is steady, and rotating speed is not subjected to the influence of voltage ripple of power network and loading moment fluctuation.
5, temperature rise is low, thereby is appropriate to long-term operation continuously, and saves the air-conditioning expense that is used to improve the workshop condition temperature.
Be specially adapted to industries such as weaving.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1, be rotor structure schematic diagram of the present utility model
Fig. 2, be the A-A cutaway view of rotor of the present utility model
1 ┈ axle, 2 ┈ laminate patch iron cores, 3 ┈ permanent magnet poles among the figure
4 ┈ conduct electricity mouse cage
Accompanying drawing is the schematic diagram of FXT53-6 type rare-earth permanent-magnet synchronous motor rotor, and the specified index of this motor is 0.8 kilowatt of a power, and 380 volts of voltages, efficient is greater than 91%, power factor greater than 0.95,1000 rev/mins of rotating speeds.This motor is selected sextupole version for use, permanent magnet poles (3) is used Nd-Fe-Bo permanent magnet material, laminate patch iron core (2) has overall structure, conduction mouse cage (4) is welded by cast aluminium or red copper bar, its geometric figure is through finite element analysis and Shape optimization designs, obtain optimal case, it uses 0.4 kilogram of Nd-Fe-Bo permanent magnet material.Rotor support and overall dimension are identical with FOX53-6 type threephase asynchronous machine, the actual measurement index of every performance all adheres to specification, and energy-conservation reaching more than 10% during actual the use compared with old motor, every year economize on electricity 440 degree have very big meaning to textile industry.
The all-round popularization of this type of motor with saving a large amount of energy, has far-reaching social effect.
Claims (6)
1, a kind of rare-earth permanent-magnet synchronous motor is made up of stator, rotor etc., it is characterized in that rotor is made of axle (1), chip select iron core (2), permanent magnet poles (3) and conduction mouse cage (4).
2, synchronous motor as claimed in claim 1 is characterized in that laminate patch iron core (2) has overall structure.
3, synchronous motor as claimed in claim 1 is characterized in that permanent magnet poles (3) selects Nd-Fe-B rare earth permanent magnetic material for use.
4, synchronous motor as claimed in claim 1 is characterized in that its conduction mouse cage (4) is made of cast aluminium or red copper.
5, synchronous motor as claimed in claim 1 is characterized in that its conduction mouse cage has deep groove structure.
6, synchronous motor as claimed in claim 1 is characterized in that rotor has two, four, six level structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204588 CN2064129U (en) | 1990-04-11 | 1990-04-11 | Rare-earth permanent-magnetism synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204588 CN2064129U (en) | 1990-04-11 | 1990-04-11 | Rare-earth permanent-magnetism synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2064129U true CN2064129U (en) | 1990-10-17 |
Family
ID=4885518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90204588 Withdrawn CN2064129U (en) | 1990-04-11 | 1990-04-11 | Rare-earth permanent-magnetism synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2064129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443830C (en) * | 2000-02-14 | 2008-12-17 | 日立空调系统株式会社 | Air-conditioner, outdoor unit and refrigeration unit |
| CN109742875A (en) * | 2019-03-26 | 2019-05-10 | 邯郸市润田泵业有限公司 | A kind of praseodymium neodymium permanent magnet submersible pump motor Special rotor |
-
1990
- 1990-04-11 CN CN 90204588 patent/CN2064129U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443830C (en) * | 2000-02-14 | 2008-12-17 | 日立空调系统株式会社 | Air-conditioner, outdoor unit and refrigeration unit |
| CN109742875A (en) * | 2019-03-26 | 2019-05-10 | 邯郸市润田泵业有限公司 | A kind of praseodymium neodymium permanent magnet submersible pump motor Special rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |