移相全桥零电压变换器的建模与控制

在Buck变换器小信号模型的基础上,建立了移相全桥零电压变换器的小信号模型.分析了控制环路的幅频特性和相频特性,设计了移相全桥零电压变换器控制环路的补偿网络,从而提高了系统的瞬态响应及稳定性.通过仿真验证了小信号模型的正确性和补偿网络设计的合理性.;The small signal model of the phase-shifted full bridge ZVS converter is constructed based on the small signal model of Buck converter. By the analysis of the amplitude frequency characteristic and phase frequency characteristic of the control loop, compensation network of the phase-shifted full bridge ZVS converter is designed to improve the transient response and stability of the system. The rationality of the small signal model and the correctness of the design of the compensation network are verified through simulation