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动态无线功率传输系统中的双独立输出逆变器

基于动态无线电能传输系统的双独立输出逆变器

【作 者】Xue-Jian Ge ; Yue Sun ; Zhi-Hui Wang ; Chun-Sen Tang

【摘 要】

In this paper, a dual-independent-output inverter, which consists of four power switches, one inductor, and one capacitor, is proposed for segmented-track dynamic wireless power transfer (DWPT) system. It can generate two independently controllable outputs and operate in four output states, to drive two primary tracks independently. Moreover, the voltage gain ranges of both outputs of the proposed inverter are wider than that of a voltage-fed full-bridge inverter (VFFBI). These features enable the inverter to replace conventional VFFBI with less number of power switches and higher redundancy than the existing multi-output inverters to realize on-demand driving of the same number of primary tracks so as to simplify the design and control of the system. First, the topology and operating principle of the proposed inverter are introduced, and two output voltages are analyzed. Second, load voltage in different output states are analyzed, based on which the steady-state modulation strategy, output state switching strategy, and parameters of the proposed inverter are designed. Further, the soft switching state of the proposed inverter is also analyzed. Finally, a Matlab/Simulink simulation and an experimental setup are implemented to verify the correctness of the theoretical analysis and the feasibility and superiority of the proposed inverter.

【关键词】Inverters,Switches,Topology,Legged locomotion,Wireless power transfer,Inductors

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