A neutral-point potential balancing algorithm for three-level NPC inverters using analytically injected zero-sequence voltage

被引：87
|
作者：
Qiang, S [1 ]
Liu, WH [1 ]
Yu, QG [1 ]
Xie, XR [1 ]
Wang, ZH [1 ]
机构：
[1] Tsing Hua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
来源：
APEC 2003: EIGHTEENTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, VOLS 1 AND 2 | 2003年
关键词：
D O I：
10.1109/apec.2003.1179220
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Based on the zero-sequence component of the reference voltages, this paper comprehensively analyzes the neutral-point variation and balancing control for three-level neutral-point-clamped inverter. An analytical method is proposed to accurately calculate the injected zero-sequence voltage for NP balancing. Based on the analytical analysis, the limitation of NP balancing control is revealed and the NP-fully-controllable region is presented. A real-time NP balancing algorithm is proposed as well. The feasibility of the proposed method is verified using simulation results for a 6kV/1800kVA medium voltage drive.
引用
收藏
页码：228 / 233
页数：6
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