A New Control Method Of Semi-Bridgeless Active Rectifier For Wireless Power Transfer System Based On The Double-Sided Lcc Compensation
2020 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)(2020)
摘要
The active rectifier technology is commonly adopted in wireless power transfer system (WPTS) for improving efficiency. However, active rectifier requires complicated phase-locked method to provide synchronization signal for pickup side controller. In this paper, A new relatively simple and reliable phase-locked method has been proposed for WPTS based on the semi-bridgeless active rectifier (S-BAR) with the double-sided LCC compensation, which doesn't need to detect the current in the resonant. Moreover, an improved control strategy for semi-bridgeless active rectifier (S-BAR) is also proposed based the phase locked method, which can regulate the output power of the system and eliminate the conduction loss of MOSFET-based body diode. Furthermore, the inverter primary side switches the operating mode according to the amount of output power. Therefore, a large amount of reactive power in the system can be avoided in light load. Finally, a 200W experimental prototype is built to verify the validity of the proposed method.
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关键词
phase lock method, semi-bridgeless active rectifier, LCC compensation
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