Abstract: In order to realize the modular control of input voltage sharing for an input series output parallel-dual active bridge（ISOPDAB）converter under wide range input voltage,this paper proposes an input voltage sharing modular control strategy based on secondary voltage regulation on the basis of wireless input voltage sharing control strategy. The proposed control strategy adjusts the voltage equalization command value of each module in the wireless input voltage sharing control by periodic communication. Based on ensuring the reliability and expandability of the system,the proposed control strategy realizes the input voltage sharing and output voltage control with zero steady error for ISOP-DAB converter under wide range input voltage. The experimental results verify the effectiveness of the proposed control strategy.