Novel Feedforward Control Enhanced by Dynamic Load-Current/Derivative Weights of Hybrid Energy Storage System for Pulsed Loads

To address the inadequate dynamic response characteristics of hybrid energy storage systems (HESS) in aviation dc microgrids under pulsed power loads caused by traditional PI control, this article proposes an optimized feedforward compensation strategy based on dynamic allocation of load-current and derivative weighting. This method bypasses the transient response limitations inherent in conventional PI control and incorporates a dynamic compensation term linked to the load current derivative directly into the duty cycle unit, enhancing the traditional dual-loop control framework. By perceiving real-time load current variations, the approach proactively adjusts power allocation coefficients among energy storage units. Compared with traditional PI control, it significantly reduces dc bus voltage recovery time under pulse load conditions, effectively enhancing bus voltage robustness and power quality. Furthermore, the article provides a theoretical analysis of the dynamic performance and stability of the proposed method from a system transfer function perspective. Finally, numerical simulations and experimental results validate the efficacy of the improved approach. The findings offer a theoretical foundation and technical reference for optimized power allocation design of HESS in high-reliability aviation dc microgrids.