Common-Mode Reduction SVPWM for Three-Phase Motor Fed by Two-Level Voltage Source Inverter

Jian Zheng, Mingcheng Lyu, Shengqing Li, Qiwu Luo and Keyuan Huang
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Jian Zheng: College of Electrical & Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
Mingcheng Lyu: College of Electrical & Information Engineering, Hunan University, Changsha 410082, China
Shengqing Li: College of Electrical & Information Engineering, Hunan University of Technology, Zhuzhou 412007, China
Qiwu Luo: School of Automation, Central South University, Changsha 410083, China
Keyuan Huang: College of Electrical & Information Engineering, Hunan University, Changsha 410082, China

Energies, 2020, vol. 13, issue 15, 1-13

Abstract: Aiming at the problem of large magnitude and high frequency of common-mode voltage (CMV) when space vector pulse width modulation (SVPWM) is used in a three-phase motor fed by a two-level voltage source inverter, a common-mode reduction SVPWM (CMRSVPWM) is studied. In this method, six new sectors are obtained by rotating six sectors of conventional SVPWM by 30°. In odd-numbered sectors, only three non-zero vectors with odd subscripts are used for synthesis, while in even-numbered sectors, only three non-zero vectors with even subscripts are used for synthesis. The actuation durations of three non-zero vectors in each switching period in each sector are given. Simulation and experimental results show that, compared with the conventional SVPWM, the CMV magnitude of CMRSVPWM is reduced by 66.67% and the CMV frequency of CMRSVPWM is reduced from the original switching frequency to the triple fundamental frequency. At the same time, the current, torque and speed of the motor are still good.

Keywords: common-mode voltage (CMV); space vector pulse width modulation (SVPWM); three-phase motor; two-level voltage source inverter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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