Adaptive soft starter for a three‐phase induction‐motor driving device using a multifunctional series compensator. Issue 7 (9th May 2019)

• Record Type: Journal Article
• Authors: Jiang, Fei; Tu, Chunming; Guo, Qi; Wu, Zhengyu; Li, Yinyi
• Is Part Of: IET electric power applications. Volume 13:Issue 7(2019)
• Page Start: 977
• Page End: 983
• Publication Date: 2019-05-09
• Subjects: starting -- voltage control -- power distribution faults -- induction motor drives -- induction motors -- invertors -- power supply quality -- machine control; terminal voltage -- soft‐starter mode -- adjustable virtual impedance -- soft‐starter control scheme -- MFSC -- adaptive soft starter -- three‐phase induction motor driving device -- induction motors -- multifunctional series compensator -- different modes -- virtual impedance mode -- soft starting -- series inverter -- voltage sag compensation mode; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2018.5079
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : This study proposes an adaptive soft starter control for induction motors using a multifunctional series compensator (MFSC). The proposed MFSC can operate in two modes: (i) the compensation mode for voltage sags and (ii) the virtual impedance mode for soft starting. Various MFSC functions are obtained by controlling the output characteristics of the series inverter. In the voltage sag compensation mode, a voltage is injected in series with the fault phase; as a result, the terminal voltage of the motor remains constant. In the soft‐starter mode, the proposed converter injects adjustable virtual impedance in each phase; as a result, the starting current can be limited to the desired value. A novel control scheme and the optimal parameter selection of the MFSC are also presented. The design methodology of the proposed MFSC is verified using simulations conducted in MATLAB/Simulink software. Experimental results prove the capability and effectiveness of the proposed MFSC.