Investigation about validity of calculation results for non-contact chargers with rectangular voltage source

In the present paper, the calculation about power transfer efficiency for non-contact charger with rectangular voltage source was attempted. The ac resistances of the sending and receiving coils were set to the calculated values in the case of which the source voltage shape was sinusoidal wave and the operating frequency was 20 kHz. The calculation results were compared with the experimental results and verified. Also, the power transfer efficiencies in the case of which the source voltage shape was rectangular wave were compared with those in the case of which it was sinusoidal wave.