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Four polar three-phase asynchronous motor

A three-phase asynchronous motor technology, applied in the direction of asynchronous induction motors, electrical components, electromechanical devices, etc., can solve the problems of large electromagnetic vibration and electromagnetic noise, radial electromagnetic force wave rotor harmonics, magnetic field harmonics, etc. Electromagnetic Noise Reduction Effect

Inactive Publication Date: 2004-02-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Some 4-pole three-phase asynchronous motors that use these slots can generate first-order, second-order, and third-order radial electromagnetic force waves in the air gap of the three-phase asynchronous motor; although some can eliminate the electromagnetic wave in the air gap of the three-phase asynchronous motor 1st order, 2nd order, 3rd order radial electromagnetic force waves, but there are 0th order and 4th order radial electromagnetic force waves, and the harmonic orders of the stator and rotor harmonic magnetic fields that produce 0th order and 4th order radial electromagnetic force waves relatively low, therefore, generate large electromagnetic vibration and electromagnetic noise

Method used

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Examples

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Embodiment Construction

[0006] In the present invention, a 4-pole three-phase asynchronous motor has 36 slots in the stator core and 40 slots in the rotor core, that is, 36 / 40 slot coordination is adopted.

[0007] Taking a 4-pole three-phase asynchronous motor with 36 / 32 slots as an example, the stator core has 36 slots and the rotor core is changed from 32 slots to 40 slots, and the electromagnetic noise of the motor is significantly reduced. The invention is a 4-pole three-phase asynchronous motor with low cost and significant benefit.

[0008] Since the present invention only changes the slot matching of the existing 4-pole three-phase asynchronous motor, in the process of implementing the present invention, sometimes only the number of slots of the motor rotor needs to be changed, which is very convenient to use.

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Abstract

The current invention opens a kind of 4 poles 3 phase asynchronous motor's slots coordination, namely, the numbers of stator iron core slots and the numbers of rotor iron core slots, can be applied in 4 poles 3 phase asynchronous motors. The current invention eliminates the step 1\step 2\step 3 radial-lead electric magnetic force wave existed in 3 phase synchronous motor, weakens the 0 step and 4 step radial-electric magnetic force wave, decreases the electromagnetism vibration, reduces the electromagnetism noise.

Description

1. Technical Field [0001] The invention relates to a three-phase asynchronous motor, in particular to a 4-pole three-phase asynchronous motor. 2. Background technology [0002] In the existing 4-pole three-phase asynchronous motor with 36 slots in the stator core, the rotor core generally has 26 slots, or 32 slots, or 28 slots, that is, generally 36 / 26 slots or 36 / 32 slots are used, or 36 / 28 slot fit. The 4-pole three-phase asynchronous motors that use these slots can generate 1, 2, and 3 radial electromagnetic force waves in the air gap of the three-phase asynchronous motor; some can eliminate the air gap of the three-phase asynchronous motor. 1, 2, and 3 radial electromagnetic force waves, but there are 0 and 4 radial electromagnetic force waves, and the harmonic orders of the stator and rotor harmonic magnetic fields that produce 0 and 4 radial electromagnetic force waves Relatively low, therefore, produce larger electromagnetic vibration and electromagnetic noise. 3. Summary...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K1/26H02K17/02
Inventor 黄开胜李红
Owner GUANGDONG UNIV OF TECH
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