ABSTRACT This paper discusses the power control strategy for bidirectional wireless power transfer (BWPT) systems in vehicle‐to‐grid (V2G) applications. Typical dual‐phase‐shift (DPS) and triple‐phase‐shift (TPS) control strategies suffer from issues such as hard switching and reactive circulating currents. The method proposed in this paper includes density, frequency, as well as phase hybrid modulation. The proposed method employs density‐frequency hybrid modulation as the core strategy for regulating power flow, complemented by inner and outer phase shift control to ensure precise power regulation. Under light‐load conditions, full‐bridge/half‐bridge mode switching is implemented to effectively suppress current ripple. The density‐frequency‐phase (DFP) modulation effectively controls power flow while ensuring constant voltage and current output. Experimental measurements realized on a 3 kW@85 kHz BWPTS demonstrate the validity of this analysis.
Shen et al. (Thu,) studied this question.