Optimum design for Series-Series compensated Inductive Power Transfer systems

This paper proposes a step-by-step optimization algorithm for optimum design of Series-Series (SS) compensated Inductive Power Transfer (IPT) systems with spiral coils. In the proposed solution, optimized parameters and Zero Voltage Switching (ZVS) frequency area are derived considering bifurcation condition. The suggested strategy optimizes the net efficiency of the SS network for a specific output power. To achieve the objective, the problem is first characterized by a three degree of freedom optimizing strategy and then, circuit parameters are calculated based on the circuit analysis. The system is optimized and simulated in MATLAB and PSIM softwares, respectively. Finally, the proposed method is verified by a laboratory IPT system with operating frequency of about 64 kHz.