摘要
辅助谐振换流逆变器拓扑结构中存在着诸如由辅助换流回路损耗引起的转换效率低、由负荷电流变化引起的变辅助换流周期和稳定性差等问题,为此提出了一种基于变压器辅助换流的新型ZVS-ZCS逆变器。该新型逆变器通过引入(1-k)Vdc参与谐振、固定换流时间控制策略和辅助换流开关的保护等措施,大大提高该拓扑结构的运行性能和应用范围。文中在通过分析、仿真和实验的基础上得到了该新型ZVS-ZCS逆变器的可行性方案,并指出了其在DFACTS技术领域的应用场合。
A new ZVS-ZCS ARCPI （auxiliary resonant- commutated pole inverter） is proposed to solve the problems, such as extra loss from auxiliary circuit, variable commutation duration, and delicate reliability etc., which exist in other ARCPIs. In this enhanced ARCPI, the introduction of forcing voltage-（ 1-k）Vdc, fixed commutation duration, and protection for auxiliary switches, enhances the performance, and also extremely extends its application. Based on the analysis, simulation, and experiment, this new ARCPI is proved reasonable, and it is also applied in DFACTS.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第6期61-67,共7页
Proceedings of the CSEE
基金
高等学校博士学科点专项科研基金项目(20030248043)
关键词
电力电子
辅助谐振换流逆变器
零电压开关
零电流开关
配网级柔性交流输电系统
power electronics
auxiliary resonant-commutated pole inverter
zero-voltage switching
Zero-current switching
distribution flexible ac transmission system
