Compressor torque control method and torque control device

A control method and technology of a control device, applied in the field of torque control and torque control devices of compressors, can solve problems such as compressor vibration, and achieve the effect of simple implementation

Inactive Publication Date: 2014-05-07
ZHEJIANG DUNAN MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a torque control method and

Method used

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  • Compressor torque control method and torque control device
  • Compressor torque control method and torque control device
  • Compressor torque control method and torque control device

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[0023] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.

[0024] As a first aspect of the present invention, a torque control method of a compressor is provided. Please refer to figure 1 The torque control method includes: obtaining the target control torque current of the compressor according to the target speed and actual speed of the compressor; compensating the target control torque current according to the load characteristics of the compressor and the actual position of the rotor of the compressor to obtain the reference torque current ; Use Clark / Park inverse transformation to transform the reference torque current into the target control torque voltage; use the target control torque voltage to control the operation of the compressor.

[0025] In the torque control method of the present invention...

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Abstract

The invention relates to a compressor torque control method and torque control device. The torque control method comprises the following steps: the compressor target control torque current is obtained according to the compressor target rotating speed and actual rotating speed; compensation is performed on the target control torque current according to the compressor load characteristic and the compressor rotor actual position to obtain a reference torque current; the reference torque current is transformed into a target control torque voltage through the Clark/Park inverse transformation; and the operation of the compressor is controlled through the target control torque voltage. According to the torque control method in the invention, according to the compressor rotor inherent load characteristic and the detected rotor actual position, compensation is performed on the target control torque current in a feedforward manner, so the vibration problem of the compressor in the low-frequency operation can be solved, and the implementation is simple and effective.

Description

technical field [0001] The invention relates to the field of compressor control, in particular to a torque control method and a torque control device for a compressor. Background technique [0002] At present, DC inverter air conditioners are more and more popular among consumers because of their good energy-saving effect, good comfort and low noise. Therefore, improving the performance of the variable frequency drive is the focus of improving the performance of the DC inverter air conditioner. [0003] Since the rotor of the compressor of the air conditioner has a special mechanical structure, when the compressor rotates, the load moment of the rotor is inconsistent in each mechanical cycle. However, the fuzzy control such as PID with a given torque cannot effectively track the change of the load torque in real time, which will cause the angular velocity of the rotor to be unstable, and finally cause the compressor to vibrate. Especially in the low frequency band, coupled...

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Application Information

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IPC IPC(8): H02P21/05H02P21/14
Inventor 汪建海柴原华徐专
Owner ZHEJIANG DUNAN MASCH CO LTD
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