Enhanced power allocation strategy of hybrid energy storage system for MEA

The aviation hybrid energy storage system (HESS) has emerged as one of the pivotal technologies driving the revolution in green aviation and low-carbon transportation technologies, owing to its superior energy density and rapid power response capability. However, conventional control methods face difficulties in fully optimizing the compensation performance of energy storage systems while ensuring system stability. To address this challenge, this paper proposes an improved adaptive control method. By integrating a voltage outer-loop adaptive algorithm with second-order frequency division technology, the proposed approach effectively suppresses DC bus voltage fluctuations and achieves notable capacity savings in HESS under identical compensation conditions. Bode diagram analysis demonstrates that the improved adaptive algorithm exhibits higher phase margins compared to conventional control methods, thereby significantly enhancing system stability. Furthermore, based on simulation results, this study establishes a control-in-the-loop experimental validation platform. The experimental results confirm that the proposed control method delivers substantial improvements in both HESS capacity configuration and system stability, verifying its effectiveness in practical applications.