ABSTRACT Green energy–based electric vehicle (EV) park requires a stabilized power control during a charging and discharging. Isolated dual active bridge (DAB) bidirectional DC–DC converter requires high‐frequency power control between load and battery charging ports. In this paper, multiple common resonant tolerant capacitive switching‐based phase control of isolated DAB DC–DC converter (mRT‐CDAC) is proposed for stable bidirectional power flow. Multiple resonant tolerant switching circuit topology is developed for the isolated DAB converter using two inductive coils (LL) arm along capacitor group (CG) elements. The proposed circuit of switching topology could suppress the high‐frequency oscillations during charging and discharging of EV park stations. Isolated DAB converter with individual phase shift between two bridges is utilized for bidirectional energy control of EV park charging unit. Voltage during the state of charge (SoC) in EV park changes as load increases. The SoC factor is added to balance the bidirectional or unidirectional power flow in EV park battery. Instantaneous zero‐voltage switching for high‐frequency resonant topology is also utilized in bidirectional EV to grid (EV2G) or grid to EV (G2EV) power control. Battery to load (B2L) events are analyzed before the SoC thresholds become lower to required value and proper charging assured in EV stations.
K. Harinadha Reddy (Wed,) studied this question.