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.
出处
《电源技术应用》
2013年第9期35-39,共5页
Power Supply Technologles and Applications
关键词
移相全桥
小信号
补偿网络
双闭环
phase-shifted full-bridge
small-signal
compensation network
double-loop
