INDUCTIVE POWER TRANSFER TOPOLOGY FOR ADVANCING ELECTRIC VEHICLE BATTERY CHARGING PERFORMANCE

Recently, zero voltage switching (ZVS) or zero current switching (ZCS) based power electronic converters have been used in high-frequency power converter topologies for limited power transfer range inductive power transfer (IPT) systems. ZVS or ZCS for all power switches at once in IPT systems is still a challenge. This work presents the upgraded zero-voltage zero-current attempting to switch (ZVZCS) IPT architecture and its switching pattern. Apart from using an auxiliary network to generate ZCS, ZVS is also acquired by the optimisation of the conventional series compensation. The proposed method is validated using resistive and battery load MATLAB/Simulink simulations. Finally, but just as importantly, the results obtained with a simulink rated for 1.1 kW, 85 kHz show how realistic the recommended architecture is. With an efficiency of 91.26%, ZVZCS can transfer dynamic power between 20 W and 1.1 kW.