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Motor drive control method, control device and parking air conditioner controller

A technology of motor drive control and motor drive circuit, which is applied in the fields of control devices, motor drive control methods, and parking air-conditioning controllers, and can solve problems such as overcurrent protection and large low-order harmonic current

Active Publication Date: 2020-10-27
广东希塔变频技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a motor drive control method, a control device and a parking air-conditioning controller, the purpose of which is to solve the problems caused by the control of low-order harmonic The large current leads to the problem of over-current protection

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  • Motor drive control method, control device and parking air conditioner controller
  • Motor drive control method, control device and parking air conditioner controller
  • Motor drive control method, control device and parking air conditioner controller

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Embodiment Construction

[0061] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0062]It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance o...

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Abstract

The invention relates to a motor drive control method, a control device and a parking air conditioner controller. The method comprises steps of obtaining a q-axis current and a motor speed estimationvalue generated by a controller; determining a back electromotive force harmonic compensation value; determining q-axis given voltage according to the q-axis given voltage initial value and the counter electromotive force harmonic compensation value generated by the controller; and finally, carrying out voltage space vector pulse width modulation according to the voltage sum of the two-phase static coordinate system and the direct-current bus voltage, and generating a modulation signal used for driving an inverter so as to control the motor to operate. Counter electromotive force harmonic extraction and compensation in the control process are added; therefore, the phase current waveform peak of the winding of the motor in the operation process is reduced, the current is closer to sine, theloss and heating of the motor are reduced, the overcurrent fault in the rated load operation process is avoided, and the stability and reliability of the whole motor in the driving operation processare enhanced.

Description

technical field [0001] The invention relates to the field of motor drive control, in particular to a motor drive control method, a control device and a parking air conditioner controller. Background technique [0002] At present, some differentiated air conditioners such as portable air conditioners and parking air conditioners are increasingly using high-power low-voltage (12-24V) dual-rotor compressors. The compressors are adapted to the corresponding DC inverter controllers. The battery is used as the power source and does not require any other transfer equipment. During the use of this scheme, due to the low-voltage power supply of the battery, the current of the compressor is large during operation, which causes the inductance of the winding of the compressor to be easily saturated. The wave current is large, and the current waveform produces a peak, which increases the motor loss of the entire compressor and easily causes overcurrent protection. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): H02P21/18H02P21/22H02P25/026H02P27/08
CPCH02P21/18H02P21/22H02P25/026H02P27/08H02P2203/03
Inventor 盛爽郑长春黄勇王甫敬
Owner 广东希塔变频技术有限公司
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