移相全桥ZVS—PWM变换器控制系统的设计  

Design on Control System of Phase-shifted Full-bridge ZVS-PWM Converter

作　　者：李楠[1] 

机构地区：[1]中国科学院强磁场科学中心,安徽合肥230031

出　　处：《电源技术应用》2013年第9期35-39,共5页Power Supply Technologles and Applications

摘　　要：介绍了移相全桥ZVS—PWM变换器的基本电路结构，并给出小信号模型，在此基础上研究该变换器的双闭环控制系统，然后结合实际参数，主要讨论在频域下对变换器补偿网络的设计问题，并通过MATLAB对开关变换器系统的开环以及补偿后的传递函数进行了频域分析。用Simulink模块搭建了电路仿真模型，观察有扰动输入时输出电压与输出电流的波形，实验证明该控制系统满足要求。The basic circuit structure of Phase-shifted Full-bridge ZVS-PWM Converter was introducesd and the Small-signal model is given, then on the Double-loop Control of the converter system is studied. In combination with real parameters,the domain converter Compensation Network design problems are discussed. Via MATLAB the switching converters,and the open-loop transfer function as well as compensation for the frequency domain has been analyzed. Simulink blocks are used to build a circuit simulation model which includes a disturbance input. Through observing the output voltage and current waveforms, the control system meets the requirements.

关 键 词：移相全桥 小信号 补偿网络 双闭环 

分 类 号：TM46[电气工程—电器]