CLLLC谐振变换器的分级寻优模型预测控制  

Hierarchical Optimization Model Predictive Control of CLLLC Resonant Converter

作　　者：冯兴田[1] 郭玉江 代站疆 武大洲 FENG Xing-tian;GUO Yu-jiang;DAI Zhan-jiang;WU Da-zhou(China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580

出　　处：《电力电子技术》2024年第1期100-102,共3页Power Electronics

基　　金：国家自然科学基金(51977220);山东省自然科学基金(ZR2019MEE094)。

摘　　要：针对CLLLC谐振变换器提出了一种基于分级寻优模型预测的混合控制策略。通过结合变频控制与移相控制的优点,在实现软开关的同时,能拓宽变换器的电压增益范围。该策略不仅减小了普通有限集模型预测控制(MPC)策略的计算量,还改善了PI控制存在的电压超调大和动态响应慢的问题,在稳态性能相近的情况下提升了变换器系统的动态性能。最后通过Matlab/Simulink仿真和实验证明了分级寻优MPC策略的有效性。A hybrid control strategy based on hierarchical optimization model prediction is proposed for CLLLC resonant converter.By combining the advantages of frequency conversion control and phase shift control,the voltage gain range of the converter can be broadened while realizing soft switching.This strategy not only reduces the calculation amount of common finite set model predictive control(MPC)strategy,but also improves the problems of large voltage over-shoot and slow dynamic response in PI control,and improves the dynamic performance of converter system under the condition of similar steady-state performance.Finally,the effectiveness of the hierarchical optimization MPC strategy is proved by Matlab/Simulink simulation and experiment.

关 键 词：谐振变换器 模型预测控制 变频控制 移相控制 

分 类 号：TM46[电气工程—电器]