CAJ | 학술논문

此文讨论适合中等功率，较高输入电压场合的改进型不对称半桥变换器，主要研究其工作原理和特性分析。与传统的半桥电路相比，改进型不对称半桥变换器增加了一个由辅助开关管和二极管构成的支路。所增加的支路在两个主开关管均关断期间为变压器原边提供续流通道，当辅助管关闭肘续流电流对主开关管的结电容进行充放电，为主开关管实现零点压开通创造了条件。最后对变换器功率电路的参数进行了设计，并以此为基础进行了仿真实验，由实验结果可得本文提出的改进型不对称半桥变换器较现有的控制方法具有更好的效果。
차문토론괄합중등공솔，교고수입전압장합적개진형불대칭반교변환기，주요연구기공작원리화특성분석。여전통적반교전로상비，개진형불대칭반교변환기증가료일개유보조개관관화이겁관구성적지로。소증가적지로재량개주개관관균관단기간위변압기원변제공속류통도，당보조관관폐주속류전류대주개관관적결전용진행충방전，위주개관관실현영점압개통창조료조건。최후대변환기공솔전로적삼수진행료설계，병이차위기출진행료방진실험，유실험결과가득본문제출적개진형불대칭반교변환기교현유적공제방법구유경호적효과。
A modified asymmetric half-bridge converter is proposed which is suitable for medium power, high input vohage occasions and the control method problem is mainly studied in this paper. Compared with the traditional half-bridge circuit, the modified converter circuit increased by auxiliary switch tube and diode constitute the branch that provide renewal circulation way for transformer original edge during the two main switch were shut off. When the auxiliary tube is closed, the free-wheeling current charged and discharged for the main switch tube capacitance, and created a condition for the main switch to be opened in the zero voltage. After the parameters of the converter circuit was designed, the simulated experiment show the better performance than the traditional way.