A Simple Capacitor Voltage Balancing Method for Nested Neutral Point Clamped Inverter

被引：0

作者：

Tian, Kai ^{[1
]}

Wu, Bin ^{[1
]}

Narimani, Mehdi ^{[1
]}

Xu, Dewei ^{[1
]}

Cheng, Zhongyuan ^{[2
]}

Zargari, Navid Reza ^{[2
]}

机构：

[1] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON, Canada

[2] Rockwell Automat Canada, Medium Voltage R&D Dept, Cambridge, ON, Canada

来源：

2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2014年

关键词：

MULTILEVEL CONVERTERS; MOTOR DRIVE; PWM; SCHEME; VECTOR;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A simple flying-capacitor voltage balancing method for nested neutral point clamped (NNPC) inverter is proposed in this paper. The NNPC inverter is a newly developed four-level voltage source inverter (VSI) with new topology. There are two flying-capacitors in series in each leg in the NNPC inverter. The voltage across each capacitor should be controlled to balance at one-third of DC bus voltage to make the inverter operate normally and all switching devices share the same voltage stress. The proposed capacitor voltage balancing method, which employs proper redundant phase switching states to control capacitor voltages and uses simple control tables to implement the procedure, requiring very few computations, is simple, effective and easy to integrate with any PWM schemes. The proposed method is verified by simulation results.

引用

下载

页码：2133 / 2139

页数：7

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