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LCL Resonant Compensation of Movable ICPT Systems with a Multi-load
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  • Journal title : Journal of Power Electronics
  • Volume 15, Issue 6,  2015, pp.1654-1663
  • Publisher : The Korean Institute of Power Electronics
  • DOI : 10.6113/JPE.2015.15.6.1654
 Title & Authors
LCL Resonant Compensation of Movable ICPT Systems with a Multi-load
Hua, Jie; Wang, Hui-Zhen; Zhao, Yao; Zou, Ai-Long;
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Compared to LC resonance, LCL resonance has distinct advantages such as a large resonant capability, low voltage and current stresses of the power device, constant voltage or current output characteristics, and fault-tolerance capability. Thus, LCL resonant compensation is employed for a movable Inductive Contactless Power Transfer (ICPT) system with a multi-load in this paper, which achieves constant current output characteristics. Peculiarly, the primary side adopts a much larger compensation inductor than the primary leakage inductor to lower the reactive power, reduce the input current ripple, generate a large current in the primary side, and realize soft-switching. Furthermore, this paper proposes an approximate resonant point for large inductor-ratio LCL resonant compensation through fundamental wave analysis. In addition, the PWM control strategy is used for this system to achieve constant current output characteristics. Finally, an experimental platform is built, whose secondary E-Type coils can ride and move on a primary rail. Simulations and experiments are conducted to verify the effectiveness and accuracy of both the theory and the design method.
Approximate resonant point;Constant-current characteristics;Large inductor-ratio;LCL resonant compensation;Movable ICPT system;Multi-load;
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