电工技术学报  2022, Vol. 37 Issue (8): 1959-1971    DOI: 10.19595/j.cnki.1000-6753.tces.201291
电机及其系统 |
中低频轻载工况下引入虚拟电抗的感应电机变频调速系统稳定控制
易山1, 卢子广1, 袁凯南2, 吴公平3, 黄守道3
1.广西大学电气工程学院 南宁 530004;
2.湖南省电机测试系统工程技术研究中心 长沙 410007;
3.湖南大学电气与信息工程学院 长沙 410082
The Stability Control of Induction Motor Variable Frequency Speed Regulation System Injected with Virtual Reactance under Low Frequency and Light Load Condition
Yi Shan1, Lu Ziguang1, Yuan Kainan2, Wu Gongping3, Huang Shoudao3
1. College of Electrical Engineering Guangxi University Nanning 530004 China;
2. Hunan Province Electrical Machinery Test System Engineering Technology Research Center Changsha 410007 China;
3. College of Electrical and Information Engineering Hunan University Changsha 410082 China
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摘要 针对中低频轻载工况下感应电机变频调速系统存在的转速与电流振荡问题,该文提出一种引入虚拟电抗的感应电机变频调速系统V/f控制方法。首先,建立感应电机变频调速系统的数学模型,在此基础上分析V/f控制下感应电机变频调速系统的稳态性能。然后,分析引入虚拟电抗的感应电机变频调速系统的根轨迹,证明了引入虚拟电抗可提升感应电机变频调速的稳定性,达到抑制感应电机变频调速在轻载中低频工况下振荡的目的。最后,通过Matlab/Simulink仿真和大功率感应电机变频调速系统的实验平台,验证了采用该文所提的引入虚拟电抗的V/f控制方法,可实现感应电机变频调速系统在中低频轻载工况下低转速脉动和低电流振荡运行。
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黄守道
关键词 感应电机变频调速系统V/f控制虚拟电抗轻载低频工况下    
Abstract:In order to solve the oscillation of speed and current in the induction motor variable frequency speed control system under low frequency and light load conditions, this paper proposes a V/f control method with virtual reactance of induction motor variable frequency speed control system. First, the mathematical model of induction motor variable frequency speed control system is established, and the steady-state performance of the system under V/f control has been analyzed. The root locus of the system with virtual reactance is then analyzed. It is shown that the virtual reactance injection can further improve the stability and suppress the oscillation of the system under low frequency and light load conditions. Finally, the simulation and high-power induction motor variable frequency speed control system experiment verify that the proposed V/f control method with virtual reactance injection can realize low speed ripple and low current oscillation operation under low-frequency and light load conditions.
Key wordsInduction motor variable frequency speed control system    V/f control    virtual reactance    low frequency and light load conditions   
收稿日期: 2020-09-25     
PACS: TM346+.2  
基金资助:广西自然科学基金资助项目(2018GXNSFDA138008)
通讯作者: 卢子广 男,1963年生,教授,博士生导师,研究方向为微电网、电力电子变流系统、电机系统控制等。E-mail: luzg@gxu.edu.cn   
作者简介: 易 山 男,1996年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: cesareyi@163.com
引用本文:   
易山, 卢子广, 袁凯南, 吴公平, 黄守道. 中低频轻载工况下引入虚拟电抗的感应电机变频调速系统稳定控制[J]. 电工技术学报, 2022, 37(8): 1959-1971. Yi Shan, Lu Ziguang, Yuan Kainan, Wu Gongping, Huang Shoudao. The Stability Control of Induction Motor Variable Frequency Speed Regulation System Injected with Virtual Reactance under Low Frequency and Light Load Condition. Transactions of China Electrotechnical Society, 2022, 37(8): 1959-1971.
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