Abstract: For traditional power balance control strategy, the power compensation is inaccurate due to the power loss and sampling deviation of converters. In this paper, an improved power balance control strategy is proposed for cascaded converters. The cascaded converter is comprised of a rectifier and a dual active bridge (DAB) converter. In the rectifier, the proposed strategy generates the power balance coefficient by intermediate voltage loop. Then, control errors caused by power loss and sampling deviation can be directly compensated in calculation equations by adjusting the power balance coefficient. Meanwhile, the proposed strategy introduces the output signal of output voltage loop to another PI controller to generate the power balance coefficient in DAB converter, which provides two phase-shift generation paths. Therefore, phase-shift generation can be guaranteed even if the compensated path fails. Finally, experimental results show that the proposed control strategy has higher power balance calculation accuracy, and has a fault tolerance for the fault condition of missing load information or large sampling deviation.