中国电机工程学报Issue(27)：4584-4593,10.DOI:10.13334/j.0258-8013.pcsee.2014.27.005
具有对称辅助电路的谐振直流环节三电平软开关逆变器
Resonant DC Link Three-level Soft-switching Inverter With Symmetrical Auxiliary Circuits
摘要
Abstract
A resonant DC link three-level soft-switching inverter with symmetrical auxiliary circuits was proposed to reduce switching loss in the three-level inverter under high switching frequency. Symmetrical auxiliary circuits were arranged in the DC link of three-level inverter. The voltage across resonant capacitors between DC buses decreased to zero periodically via the resonation of auxiliary circuits. Main switching devices in the three-level inverter were operated when the voltage across resonant capacitors between DC buses was zero to realize zero-voltage switching. The operation principle of the soft-switching inverter was analyzed in detail on the basis of equivalent circuits at different operation modes. A 3 kW laboratory prototype of resonant DC link three-phase three-level soft-switching inverter had been built. Experimental results were demonstrated to confirm validity of soft-switching and improve efficiency compared with hard-switching inverters. Therefore, the proposed topology with engineering practicability in the paper can effectively reduce switching loss.关键词
谐振/三电平/软开关/逆变器/直流环节/对称Key words
resonant/three-level/soft-switching/inverter/DC link/symmetrical分类
信息技术与安全科学引用本文复制引用
王强,刘岩松,陈祥雪,邢岩..具有对称辅助电路的谐振直流环节三电平软开关逆变器[J].中国电机工程学报,2014,(27):4584-4593,10.基金项目
国家自然科学基金项目(51207069)；中国博士后科学基金项目(2013M531349)；辽宁省教育厅科研项目(L2013146)；江苏省博士后科研资助计划项目(1301105C)。Project Supported by National Natural Science Foundation of China (51207069) （51207069）
Project Supported by China Postdoctoral Science Foundation (2013M531349) （2013M531349）
Project Supported by Foundation of Liaoning Educational Committee (L2013146) （L2013146）
Jiangsu Planned Projects for Postdoctoral Research Funds (1301105C) （1301105C）
