| 基于等价输入干扰的三电平AC－DC逆变器中点电压控制(英文) |
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| 引用本文： | Jie ZHANG,Ryuichi YOKOYAMA,Jinhua SHE,Win WU. 基于等价输入干扰的三电平AC－DC逆变器中点电压控制(英文)[J]. 电力系统保护与控制, 2013, 0(1): 183-189 |
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| 作者姓名： | Jie ZHANG Ryuichi YOKOYAMA Jinhua SHE Win WU |
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| 作者单位： | Waseda University;Tokyo University of Technology;Central South University |
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| 摘 要： | 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.
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| 关 键 词： | inverter multi-level neutral-point voltage EID disturbance |
Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach |
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| Affiliation: | Jie ZHANG1, Ryuichi YOKOYAMA1, Jinhua SHE2, Win WU3 (1.Waseda University, Tokyo 169-8050, Japan; 2. Tokyo University of Technology, Tokyo 192-0982, Japan; 3. Central South University, Changsha 410083) |
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