机电工程技术2024，Vol.53Issue(7)：221-224,4.DOI:10.3969/j.issn.1009-9492.2024.07.047
矿用异步电机变频调速系统的振荡抑制策略
Oscillation Suppression Method for Mine Induction Motor Drive System
孙树根 1张志波 2任浩2
作者信息
- 1. 山西潞安矿业集团慈林山煤业有限公司李村煤矿,山西长治 046600
- 2. 山西伟奇电器技术有限公司,山西长治 046000
- 折叠
摘要
Abstract
Due to the advantages of simple control and not affected by parameter changes,in many cases,the mine induction motor is controlled by variable voltage and variable frequency(VVVF)mode.But oscillations are often experienced under light loaded or no loaded lead to the frequency converters trip,even destroy the motor.In order to deal with the trouble,a new oscillation suppression strategy is proposed based on VVVF model by analyzing the equivalent model and control mechanism of induction motors and deriving the transfer function between motor and output voltage.The control strategy is to design a second-order bandpass filter to extract the harmonic components of the motor without changing the speed,and thus the air flux to suppress the oscillation is changed and the system operation is stabilized by PI regulator.Then the parameters of PI regulator are adjusted to a type I system.Finaly,by building a motor control model with MATLAB and building a inverter to test the control strategy,the results show that the oscillating motor can quickly tend to stable after the control strategy function is enabled,and the THD of motor stator current is reduced from 61% to 8% .关键词
变频器/振荡抑制/VVVF/异步电机Key words
frequency converters/oscillation suppression/VVVF/induction motor分类
信息技术与安全科学引用本文复制引用
孙树根,张志波,任浩..矿用异步电机变频调速系统的振荡抑制策略[J].机电工程技术,2024,53(7):221-224,4.
