一种宽范围零电压开关移相全桥变换器的研究  

Research on a Wide Range ZVS Phase Shifted Full Bridge Converter

作　　者：陈桂涛[1] 郭辉 孙强[1] 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《电气传动》2017年第12期44-47,共4页Electric Drive

基　　金：陕西省教育厅产业化培育项目(2011JG08);陕西省科技厅科技攻关项目(2011K09-05)

摘　　要：研究一种可实现宽范围零电压开关的移相全桥变换器,采用双变压器结构,可在宽负载范围内实现软开关。首先,详细分析了该电路工作过程;其次,讨论软开关实现条件、是否存在初级侧环流及无损钳位吸收等问题;最后,搭建了一台10 k W样机进行实验研究。结果表明,该变换器具有软开关范围大、变压器初级侧无环流、次级侧电压尖峰被钳位于输出电压的优点,在高压大功率应用场合具有良好的应用前景。A phase shifted full bridge converter with a wide range of zero voltage switching was studied,which could be used to achieve soft switching in a wide load range. First,a detailed analysis of the working process of the phase shifted full bridge converter was given;secondly,the soft switching condition,the existence of the primary side circulation and lossless clamp absorption problems were in-depth discussed;finally,a prototype of 10 kW was built.The experimental research results show that the converter has more advantages,such as,it has a wide soft switching range,the primary side of the transformer without circulation,and the transformer secondary side voltage is clamped at the output voltage spikes,which will has a good application prospect in high power application.

关 键 词：零电压开关 移相全桥变换器 占空比丢失 环流 效率 

分 类 号：TM461[电气工程—电器]