A novel method for reducing common mode voltage base on improved SVPWM in three-phase PV inverter

Author

Li, Qun ; Sun, Yaojie ; Lin, Yandan ; Guo, Wenwu ; Wu, Zhaomi ; Bai, Zhifeng

Author_Institution

Shanghai ZOF New Energy Co., Shanghai, China

Volume

1

fYear

2011

fDate

20-22 May 2011

Firstpage

204

Lastpage

208

Abstract

The present paper proposed an improved space vector pulse width modulation (SVPWM) method for reducing common mode voltage. Non-zero vectors which were generated by exchanging the specific two arms´ switching patterns were applied to reduce the common mode voltage instead of zero vectors. On contrast with the conventional SVPWM strategy which brings in the common mode voltage in typical three-phase inverters, the proposed method can reduce the peak-to-peak amplitude of the common mode voltage to 1/3, without any additional volume, weight or cost, implemented totally by software. Furthermore, the method can also be applied conveniently in the inverters controlled by SVPWM with deadband compensation. Simulation on a 10kW three-phase photovoltaic inverter was performed to verify the validity effectiveness of this method.

Keywords

PWM invertors; SVPWM strategy; common mode voltage reduction; deadband compensation; improved space vector pulse width modulation method; nonzero vectors; power 10 kW; three-phase photovoltaic inverter; Arrays; Insulated gate bipolar transistors; Inverters; Silicon; Space vector pulse width modulation; Switches; Voltage control; Common mode Voltage; PV Inverter; SVPWM;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-61284-749-8

Type

conf

DOI

10.1109/ICMREE.2011.5930796

Filename

5930796