基于LCL谐振变换结构的RSD重频系统充电技术  

Capacitor Charging Technology for RSD Repetitive Pulsed Power System Based on the LCL Resonant Converter Topology

作　　者：李飞龙[1] 余亮[1] 梁琳[1] 邹雪城[1] 

机构地区：[1]华中科技大学,光学与电子信息学院,湖北武汉430074

出　　处：《电力电子技术》2014年第1期60-62,共3页Power Electronics

基　　金：国家自然科学资金资助项目(50907025);中央高校基本科研业务费资助项目(HUST2012QN150)~~

摘　　要：全固态半导体开关,即反向开关晶体管(RSD)因其具有全面积、纳秒至微秒级导通等特有的性质,在脉冲功率领域有着良好的应用前景。研究了RSD脉冲功率系统主储能电容的恒流充电技术。利用交流小信号分析法对基于LCL谐振变换结构的充电电源工作原理进行了详细阐述,分析了恒流特性、恒压特性及开关管的软开关特性,利用Orcad Pspice仿真软件进行了仿真验证。同时从功率损耗方面对开关管IGBT的缓冲吸收回路进行了优化设计。通过27 ms将27μF电容器充电至1.1 kV的实验证明了基于LCL拓扑的谐振变换充电电源具有恒流、控制简单、宽负载应用范围等优点,适用于主储能电容器的高精度、快速充电。Solid-state semiconductor device, reversely switched dynistor（RSD） has a bright application prospect in the pulsed power areas for its unique characteristics ：the whole area turning on in nanoseconds or microseconds.The ca- pacitor charged in a constant current model in the pulsed power system is researched.The working principle of the LCL resonant converter is analyzed in detail using the small signal analyzing method.The characteristics of inherent constant current, constant voltage and soft switching are analyzed.Those characteristics are verified by using the simu- lation software Oread Pspice.The snubber circuit of the switching device IGBT is optimally designed from the aspect of the power dissipation.The LCL resonant topology charging power has the advantages of constant current, easier con- trol and wide load range.Those advantages are verified by charging a 27 μF capacitor to the voltage 1.1 kV in 27 ms. This LCL resonant topology is applicable to charging the capacitor in a high-precision and quick charging.

关 键 词：反向开关晶体管 恒流充电 谐振变换 

分 类 号：TN3[电子电信—物理电子学]