郑宏,郭其金,沈建杨.无桥DBPFC变换器的虚拟超局部优化控制策略[J].电测与仪表,2023,60(8):20-25. Zheng Hong,Guo Qijin,Shen Jianyang.Virtual Super Local Optimization Control Strategy for Bridgeless DBPFC Converters[J].Electrical Measurement & Instrumentation,2023,60(8):20-25.
无桥DBPFC变换器的虚拟超局部优化控制策略
Virtual Super Local Optimization Control Strategy for Bridgeless DBPFC Converters
In view of low power factor, high total harmonic distortion, slow dynamic response speed and high output voltage ripple in bridgeless Dual_Boost power factor correction (DBPFC) converter controlled by traditional average current control, a virtual super-local optimization control strategy is proposed.By means of coordinate transformation, the working model of the converter in the virtual DQ mode is established to realize the tracking of the current without static difference. On this basis, a super-local optimization control strategy is designed to improve the sensitivity of the current controller designed based on the mathematical model to parameter changes and internal and external disturbances, and to overcome the dependence of the controller on parameters. The simulation and experimental results show that the power factor of the proposed bridgeless DBPFC converter controlled by virtual super-local optimization strategy can reach 0.996, the total harmonic distortion is 4.93%, and it has good dynamic response ability and high power quality level.
