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Discrete Time Modeling of Wireless Power Transfer System Using LCC Compensation Topology
Xiufang Hu,Yue Wang,Shuangqing Lv,Xiaoshuai Dong,Tianjin Chen,Yongbin Jiang,Pengfan Xu 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In recent years, wireless power transfer (WPT) technology has developed rapidly. However, conventional modeling methods for the dynamics of WPT suffer from the order increase problem and complicated derivations and expressions. In this paper, a discrete time modeling method is used for wireless power transfer systems which use magnetic resonant coupling. The proposed method aims on the dynamics of the overall WPT system, including the nonlinear inverter and rectifier. The orders of the developed models are lower than that of the generalized state space averaging method and the extended describing functions technique. Control to output voltage small-signal behaviors predicted by the discrete time model are verified by circuit simulation results.