結合交錯式昇壓型與推挽式高功因轉換器之研製

A Study of High Power Factor AC/DC Converter with Interleaved Boost and Push-pull Conversion Topologies

本文提出一高功因交流／直流轉換器。電路之架構以整合交錯式昇壓型與推挽式轉換器成為一高功因轉換器。交錯式昇壓型轉換器操作於不連續電流模式，推挽式直流／直流轉換器則操作於連續與不連續電流模式。控制方式採用單一迴路之輸出電壓回授，以簡化控制電路，並達成此高功因轉換器。文中分析此高功因轉換器之工作原理，並經由一150W之實作雛形來證實此高功因轉換器之操作與性能。

A high power factor AC/DC converter is proposed in this paper. The construction is combination interleaved boost with a push-pull DC/DC converter to provide the high power needed. The interleaved boost converter is operated in discontinuous conduction mode and the push-pull converter is designed to operate in both continuous and discontinuous conduction modes. To simplify the controller, a single loop of the voltage mode controller is adapted to control this proposed converter and reach the necessary high power. The operation mode of the proposed high power factor AC/DC converter is illustrated in this paper. The operation and performance of the proposed high power factor AC/DC converter has been verified on a 150 W prototype.