三类高频链AC-AC变换器比较研究

Comparison study of three kinds of AC-AC converters with high frequency link

摘要：本文对Buck、Boost、Buck-Boost型三类高频链AC．AC变换器的电路结构与拓扑、控制策略、网侧功率因数、负载短路时的可靠性、输出容量、高频变压器磁化状态和原理试验结果等进行了深入的比较研究，获得了重要结论。高频链AC—AC变换器电路结构，是由输入滤波器、储能电感（Boost型）、

The circuit configuration and topology, control strategy, line power factor, reliability under load shortcircuit, output capacity, magnetizing state of the high frequency transformer are proposed, and principle test results of Buck, Boost and Buck-Boost mode AC-AC converters with high frequency link are comparatively investigated in this paper, and important conclusions are obtained. The circuit configurations of AC-AC converters with high frequency link are constituted in the order of input filter, storage inductance （ Boost mode）, input cycloconverter, high frequency transformer or high frequency storage transformer, output cycloconverter, and output filter respectively. Research results have demonstrated that the three kinds of AC-AC converters with high frequency link have different technological performance, difficulty of engineering realization, and application fields, and lay the key technical foundation on new type regulated sinusoidal AC power supply, AC regulators, electronic transformer and same frequency waveform conversion.