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
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.
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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2022, Vol. 37 
