Abstract:

The primary focus of this research work is to develop a topology to achieve successful low to medium-range power transfer via IWPT for EV battery charging applications. The parameter tuning for increased energy storage elements (resonance networks) becomes challenging without a sophisticated approach due to the design constraints of transmitter receiver coil’s large series impedance. Hence, this research work concentrates on developing a modified topological structure with a minimum number of resonant networks while satisfying the aspects of efficient performance for a wide range of power transfer. The beginning of this work contributes to addressing the significant issues and limitations of IWPT technology’s foundation. The topological foundation for IWPT including classical series-series (SS), series-parallel (SP), parallel-series (PS), and parallel-parallel (PP) using single capacitor at each coil as a benchmark for future developments. An impedance model is developed for topological analysis to evaluate the converter efficiency to achieve the required performance and its conditions. The presented work identifies that the modification in main circuit parameters is suitable to achieve maximum efficiency condition for limited power transfer range.