Inter-operability considerations of the double-sided LCC compensated wireless charger for electric vehicle and plug-in hybrid electric vehicle applications

Abstract

This paper aims to discuss the feasibility of interoperation between wireless chargers with four basic compensation topologies and that with the double-sided LCC compensation topology. A brief analysis of double-sided LCC compensation topology is provided based on our previous researches. The paper mainly presents the design considerations of the different compensation topologies: (1) The secondary sides with series compensation and parallel compensation when they work with an LCC compensation topology as the primary side; (2) The primary sides with series compensation and parallel compensation when they work with LCC compensation topology as the secondary side. So in all, four topologies will be discussed respectively: LCC-S, LCC-P, S-LCC, and P-LCC. A wireless charger prototype with double-sided LCC compensation topology has been re-designed into LCC-S type wireless charger to verify the analysis. The efficiency is 95.8% from DC to DC even there is 275mm misalignment at 200mm gap.