Power Regulation and Efficiency Optimization of Switched Reluctance Generator for More Electric Aircraft

In order to extend the optimal control theory of switched reluctance generators (SRGs) and promote their application in more electric aircraft power systems, this paper proposes a new method for the power regulation and efficiency optimization of SRGs. First, the gradient descent method is used to find the turn-on angles corresponding to different turn-off angles and zero-voltage (ZVL) angle to complete the regulation of a given power. Then, the efficiency of the SRM under each set of angle combinations is calculated and fitted to a second-order function. Furthermore, the control angles combination at the maximum efficiency is calculated as the initial value of the SRM based on the fitted function. Finally, the control angles are optimized online based on a simplified version of the particle swarm optimization (PSO) algorithm to ensure the maximum efficiency of real-time tracking. The simulation results verify the effectiveness of the proposed method.