25kW全桥移相变换器系统设计  

Design of a 25 kW Phase-shift Full Bridge Conversion System

作　　者：夏泽中[1] 李军[1] 李远正[1] 

机构地区：[1]武汉理工大学自动化学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2008年第2期232-235,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：湖北省科技攻关资助项目(2006AA10127B27)

摘　　要：针对大功率高频开关电源的应用,设计出了25 kW大功率的全桥移相变换器系统。该系统主电路采用全桥移相变换器,开关控制采用UCC3895控制器。介绍了主电路结构、控制方式选择和控制电路设计,并针对大功率变换器中抑制开关管尖峰电压和实现软开关问题,提出了解决方案。通过实验样机的调试,验证了方案选择和参数设计的正确性。The design of a 25kW full bridge phase - shift conversion system for high - power applications was designed. Full bridge topology was employed as adc- ac circuit and the phase shift controller UCC3895 was used to produce close loop PWM control signals. Detailed design of the circuit structure, control modes, and snubber circuits were described. A 25kW prototype was built to verify the scheme choice and parameter design. The experiment result shows the validity of the proposed full bridge phase shift conversion system.

关 键 词：移相PWM控制 UCC3895控制器 吸收电路 零电压软开关(ZVS) 

分 类 号：TM46[电气工程—电器]