Boost型高频环节AC-AC变换器研究

Boost型高频环节AC-AC变换器研究:首次提出了Boost 型高频环节AC-AC 变换器电路结构与拓扑族，它是由储能电感、输入周波变换器、高频变压器、输出周波变换器以及输入、输出滤波器构成。深入分析研究了这类变换器的稳态原理特性与移相控制策略，提出并有效地解决了变换器的若干关键问题。以全桥桥式电路拓扑为例，进行了这类变换器的仿真和原理试验。研究结果表明，这类变换器具有高频电气隔离、电路拓扑简洁、两级功率变换(LFAC-HFAC-LFAC)、双向功率流、变换效率高、网侧功率因数高、负载适应能力强、负载短路时可靠性高等优点，为优良性能的正弦交流稳压器、调压器、电力电子变压器和同频波形变换器奠定了关键技术基础。
Abstract: A circuit configuration and circuit topological family of the Boost mode AC-AC converter with high
frequency link are first proposed. This kind of circuit topology is constituted of storage inductor, input cycloconverter, high
frequency transformer, output cycloconverter, as well as input and output filter. The steady principles and phase-shifting
control strategy are deeply investigated and several key problem of this kind of converter are proposed and solved. Taking
the full bridge-full bridge mode circuit topology as an example, the simulation and principle test of the kind of converter are
made. The research results have demonstrated that this kind of converter has the advantages such as high frequency
electrical isolation, simple topology, two-stage power conversions (LFAC-HFAC-LFAC), bi-directional power flow, high
conversion efficiency, high line power factor, strong load adapting ability and high reliability during short load. This converter lay the key technical foundation on new type excellent performance regulated sinusoidal ac power supply, ac regulator, power electronics transformer, and same frequency waveform’s converter etc.
关键词：Boost 型； AC-AC 变换器； 高频环节； 周波变换器；移相控制策略
Keywords: boost mode; AC-AC converter; High frequency link; Cycloconverter; Phase-shifting control strategy