电力系统保护与控制Issue(1)：183-189,7.
Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach
Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach
Jie ZHANG 1Ryuichi YOKOYAMA 1Jinhua SHE 2Win WU3
作者信息
- 1. Waseda University, Tokyo 169-8050, Japan
- 2. Tokyo University of Technology, Tokyo 192-0982, Japan
- 3. Central South University, Changsha 410083
- 折叠
摘要
Abstract
One problem with a single source three-level inverter is the drafting of its neutral-point voltage. This may occur during transition or when unbalanced loads are connected to the inverter system. Variation of neutral-point voltage may greatly deteriorate the power quality. In this paper, we employ an equivalent-input-disturbance approach to deal with this problem. By adding an extra neutral leg, the control problem of neutral-point voltage is converted to a disturbance rejection problem. This method suppresses the variation of the neutral-point voltage to a low level and reduces the capacity of DC-link capacitors. Simulation results show the effectiveness of the method.关键词
inverter/multi-level/neutral-point voltage/EID/disturbanceKey words
inverter/multi-level/neutral-point voltage/EID/disturbance分类
信息技术与安全科学引用本文复制引用
Jie ZHANG,Ryuichi YOKOYAMA,Jinhua SHE,Win WU..Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach[J].电力系统保护与控制,2013,(1):183-189,7.
