Study on Efficiency Optimization of the Inductive Power Transfer System

In order to solve the problem that the efficiency of the IPT system common power supply platform decreases when the load resistance changes, An efficiency optimization strategy based on the primary resonant capacitor array has been proposed. With A.C impedance analysis, the system model and efficiency model of voltage type IPT system have been built. Then the optimal capacitance, the threshold of the primary resonant capacitor and the capacitance to achieve the demanded efficiency are respectively obtained under different load conditions. This method promotes the power transfer efficiency and stability of the IPT system. The simulation and experiment verify the validity of the theoretical analysis and the effectiveness of the proposed efficiency optimization strategy.