摘要
提出了一类双极性移相控制电压源高频交流环节AC/AC变换器,以半桥全波式电路拓扑为例,深入研究了这类变换器的稳态工作原理,获得了变换器功率器件实现软开关的设计准则。借助输出周波变换器换流重叠、输入电网电压极性选择和输出滤波电感电流极性选择,实现了变压 器漏感能量和输出滤波电感电流的自然换流,解决了周波变换器固有的电压过冲和环流问题,实现了输入周波变换器功率器件的ZVS开关和输出周波变换器功率器件的ZCS开关,为获得新型正弦交流稳压器和电子变压器奠定了关键技术基础。仿真与原理试验结果均证实了这类变换器的正确性与先进性。
The bi-polarity phase-shifted controlled voltage mode AC/AC converters with high frequency ac link are proposed. Steady operation principle of the converters is deeply investigated, and the design criterion for power devices of the converters to realize soft-switching is obtained, as the half bridge-full wave mode circuit topology is exampled.By using commutation overlap of the output cycloconverter and polarity selection of the input voltage and output filtering inductance current,the leakage inductance energy and the output filtering inductance current are naturally commutated, the surge voltage and surge current of the cycloconverters are overcome, and ZVS switching of power devices in the input cycloconverter and ZCS switching of power devices in the output cyclocon-verter are realized. Farthemore the converters lay the key technical foundation on new-type regulated sinusoidal ac power supply and electronic transformer. The correction and advance-ment of the converters are verified by the simulation and principle test.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第9期69-73,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(59977010)
江苏省自然科学基金项目(BK99121)
航空基础科学基金项目(02F52027)。~~
关键词
双极性移相控制
电压源
高频交流环节
AC/AC变换器
AC/AC converters
cycloconverter
high frequency ac link
bi-polarity phase-shifted control
soft-switching
