Irregular 64 PDM Controlled Wireless Power Transfer for Pecise Power Control

The power control techniques used in wireless charging systems can be divided into two classes: variable frequency and fixed frequency. In variable frequency power control, the efficiency of the charging system decreases when it is operated outside the zero-phase angle (ZPA). The efficiency of the wireless charging system increases when fixed frequency charging systems are operated even at ZPA frequency and under soft switching conditions. In this paper, an irregular 64-PDM controlled wireless charging system is proposed. The proposed 64-PDM controlled wireless charging system is implemented in a class-D inverter in a MATLAB/Simulink environment and the results are presented. As a result of the simulations, the efficiency of the wireless charging system operating under soft switching conditions at ZPA frequency is presented.