全桥LC-LC串并联谐振逆变器小信号建模及闭环设计  

Small Signal Modeling and Closed-loop Design of Full-bridge LC-LC Series-parallel Resonant Inverter

作　　者：张彬[1,2] 罗全明 ZHANG Bin;LUO Quanming(Department of Electronic Engineering,Chongqing Aerospace Polytechnic,Chongqing 400021,China;School of Electrical Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆航天职业技术学院电子工程系,重庆400021 [2]重庆大学电气工程学院,重庆400044

出　　处：《电源学报》2021年第5期40-51,共12页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51577019)。

摘　　要：主要研究恒频移相控制全桥LC-LC串并联谐振逆变器的动态性能,采用相量建模法PDM(phasor-domain modeling)对其小信号模型进行分析,通过将时域量变换到相量域,可以得到谐振逆变器的相量域大信号模型,再加入小信号扰动后即可得到相量域的小信号模型。在此基础上,对采用相量建模法建立的大信号及小信号模型,进行了环路补偿设计。最后,搭建了一台输出功率为200 W的实验样机,实验结果验证了理论分析设计的正确性。In this paper,the dynamic performance of a full-bridge LC-LC series-parallel resonant inverter under constant-frequency phase shift modulation is studied.Its small signal model is analyzed using the phasor-domain modeling.By transforming the time-domain quantity into the phasor-domain,the phasor-domain large signal model of the resonant inverter can be obtained.In addition,small signal perturbations can be added to obtain the small signal model in the phasor-domain.On this basis,loop compensation design is carried out for the large-and small-signal models established using the phasor-domain modeling method.Finally,an experimental prototype with output power of 200 W was built,and experimental results verified the theoretical analysis and design.

关 键 词：全桥LC-LC串并联谐振逆变器 相量建模法 动态性能 小信号模型 

分 类 号：TM46[电气工程—电器]