Complete Soft Switching Implementation Based on LCC-LCC Compensation Network for Wireless Power Transfer System

To enhance the efficiency of WPT systems, optimizing the control method of the full bridge converter at the primary side is crucial. This paper introduces FB-SDM control to maintain ZVS operation consistently within the full bridge converter. However, its applicability in LCC-LCCcompensation networks is limited. To address this, a band-pass filter is incorporated into the LCC-LCCcompensation network. This addition effectively eliminates frequency deviations inherent in the original system, enabling the converter to generate sinusoidal output currents that align with FB-SDM requirements. Ultimately, these enhancements facilitate full-range ZVS operation, significantly boosting system efficiency overall.