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In order to optimize the efficiency of Buck converter in wireless charging system for EVs and further the efficiency of whole system, the loss model is established and analyzed in this paper. The load characteristics of Buck converter in wireless charging system is analyzed and then the relationships between switching frequency and efficiency in different load characteristics are derived and switching...
Impedance matching is a common method to realize maximum power transfer. It's usually implemented by using a power electronics converter such as Buck converter. However, the impedance transformation range is limited by the Buck converter characteristics, and the range has not been discussed in previous papers. This paper proposes a novel impedance matching method for maximum power transfer tracking...
Maximum power transfer is a significant issue in wireless power transfer system, the common used method is impedance matching to track the optimal impedance point by using a power electronic converter. However, in a practical WPT system, the coupling coefficient will drift from the designed value due to the air gap, receiver structure and other environmental influence. As a result, the optimal impedance...
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