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This paper proposes a design method of the wireless power transfer system which obtains high power and high efficiency by using LC filter circuit in the transmitting side. This study forcuses on the maximum efficiency point of impedance. In the simulation, the proposed design achieved 2.5kW output power with the efficiency of 73%. In the experiment, the proposed circuit achieved 1.8kW wireless power...
Wireless power transfer (WPT) system has the advantages of safety, reliability, convenience and so on. In order to improve the output power and reduce the input capacity of the system, the energy transfer coils should be compensated by electrical measures in practical applications. In this paper, series-series (SS) and series-parallel (SP) compensation topologies of primary and secondary coils were...
This paper proposes a Q-enhancement method to improve the quality factor of coils in a resonant inductive coupling wireless power transfer system (WPTS). The proposed WPTS increases the transfer power and the transfer efficiency, simultaneously, especially at transfer distance over the coil diameter. The proposed Q-enhancement method is verified both by calculation and simulation results, which match...
Tremendous progress has been achieved in the field of wireless power transfer in last few years. Several methodologies have been adopted to transfer power across large air gaps with high efficiency. We demonstrated here nonradiative magnetic coupling to improve the transfer distance for wireless power transfer system where grid connection is inconvenient and hazardous. How much energy is being transferred...
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