摘要
研究了由两路双向反激直流变换器输入并联输出串联构成的反激逆变器。在连续工作模式的反激逆变器的基础上,提出同步整流控制方案,即输出功率较大时实现同步整流,较小时实现零电压开通,大大简化了传统电流源高频链逆变器的控制方案,从而有效地降低了整流二极管导通损耗,将整机效率提高到85.8%。研究内容包括工作模式、控制策略、关键参数设计准则、同步整流或零电压开通的实现和边界问题。原理试验样机验证了该逆变器及其控制策略的正确性和先进性,证实其适合于低压大电流变换场合。
A novel flyback inverter is presented in this paper. It is composed of two bi-directional flyback converters, which is connected in parallel at the input-end and in series at the output-end. Based on the continuous conduction mode （CCM） operation of the flyback inverter, synchronous rectification control scheme is established, which is simple than that of convention current mode high-frequency link inverter. Synchronous rectification in large power stage and soft switching in small power stage reduces the conduction losses of the rectifier diodes and improves the efficiency of the inverter up to 85.8%. The basic operational principles, the design of the main circuit parameters and synchronous rectification control characteristic are presented in this paper. A correction and advance of the inverter are verified by the test results, special in the low voltage and large current converter condition.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第6期95-99,共5页
Proceedings of the CSEE
关键词
单级逆变器
隔离
反激变换器
同步整流
single stage inverter
isolated
flyback converter
synchronous rectification
