A Switching Frequency Optimized Space Vector Pulse Width Modulation (SVPWM) Scheme for Cascaded Multilevel Inverters

Xiongmin Tang, Junhui Zhang, Zheng Liu and Miao Zhang
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Xiongmin Tang: School of Automation, Guangdong University of Technology, Guangzhou 510006, China
Junhui Zhang: School of Automation, Guangdong University of Technology, Guangzhou 510006, China
Zheng Liu: School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410004, China
Miao Zhang: School of Automation, Guangdong University of Technology, Guangzhou 510006, China

Energies, 2017, vol. 10, issue 5, 1-18

Abstract: This paper presents a novel switching frequency optimized space vector pulse width modulation (SVPWM) scheme for cascaded multilevel inverters. The proposed SVPWM is developed in a ???? coordinate system, in which the voltage vectors have only integer entries and the absolute increment of coordinate values between adjacent vectors is equal to dc-bus voltage of power cells (1 pu). The new SVPWM scheme is built with three categories of switching paths. During each switching path, the change of one phase voltage is limited in 1 pu. This contributes to decrease the number of commutations of switches. The proposed SVPWM scheme is validated on a 7-level cascaded inverter and the results show that it significantly outperforms traditional SVPWM schemes in terms of decreasing the number of switch commutations.

Keywords: space vector pulse width modulation (SVPWM); switching frequency optimized; cascaded multilevel inverter; switching path planning (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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