Control method for inhibiting single-phase capacitor run motor vibration noise

A control method and technology of vibration and noise, which are applied in the direction of suppressing motor vibration control, AC motor control, control system, etc., can solve the problems of limiting the application range and place of single-phase capacitor operation motor, poor operation performance, etc., and achieve the purpose of suppressing vibration noise, Small vibration noise, the effect of expanding the space

Inactive Publication Date: 2015-08-19
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the three-phase asynchronous motor with the same capacity, its operati

Method used

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  • Control method for inhibiting single-phase capacitor run motor vibration noise
  • Control method for inhibiting single-phase capacitor run motor vibration noise
  • Control method for inhibiting single-phase capacitor run motor vibration noise

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Example Embodiment

[0024] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0025] figure 1 It is the wiring diagram of the main and auxiliary windings and capacitors when the single-phase capacitor motor is running, including: the main winding 1 and the first control switch 2, the auxiliary winding 3, the rotor 4, the starting capacitor 5 and the second control switch 6, and the adjustable running capacitor 7 and the third control switch 8 . After the secondary winding 3 is connected in series with the starting capacitor 5, the second control switch 6 is closed, and then connected in parallel with the main winding 1, the first control switch 2 is closed, the third control switch 8 is opened, and the rated voltage U is applied to the single-phase motor winding. 1N , the rotor 4 of the motor is started with no load. After the rotor 4 runs stably, the second control switch 6 is turned off, that is, the secondary winding 3 and the...

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Abstract

The present invention provides a control method for inhibiting single-phase capacitor run motor vibration noise. The circuit of the method comprises a primary winding, a secondary winding, a start capacitor and an adjustable run capacitor. The induction electromotive force of the secondary winding when the primary winding is powered and the secondary winding is disconnected and the induction electromotive force of the primary winding when the secondary winding is powered and the primary winding is disconnected are detected when a motor is in a no-load operation, and the effective turn ratio of the primary winding and the secondary winding is obtained. Rated voltage is applied to the motor to allow the motor to drive a load to run, a start capacitor is disconnected after normal running, the adjustable run capacitor is connected, the voltage of the primary winding, the secondary winding and the adjustable run capacitor at that time are detected, the ovality information of a gap magnetic field is obtained, the capacitance value of the adjustable run capacitor is changed according to the information, the vibration noise in common single-phase capacitor run motor load running can be effectively inhibited, the adjustable run capacitor can be changed according to different loads dragged by the motor, and the vibration noise is small when multiple types of loads are dragged by the motor.

Description

technical field [0001] The invention relates to a control method of a motor, in particular to a control method for suppressing the vibration noise of a single-phase capacitor running motor. Background technique [0002] Single-phase capacitor-operated motors have the advantages of simple structure, low price, and convenient maintenance. They are often used as power sources for micro-machines in industrial and agricultural production. They are also widely used in household appliances and small electric tools, such as air-conditioning compressors. Use single-phase motors, single-phase motors for range hoods, single-phase motors for electric shutter doors, etc. However, compared with the three-phase asynchronous motor with the same capacity, its operating performance is poor, mainly manifested in the obvious vibration noise during the operation of the motor, and the vibration noise changes with the mechanical load driven by the single-phase motor, thus limiting The scope and p...

Claims

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Application Information

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IPC IPC(8): H02P25/04H02P23/04
Inventor 赵浩冯浩吴晓阳
Owner JIAXING UNIV
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