Digital Grid-Connected Control Technology for More Electric Aircraft Power Generation System Based on Model Predictive Control

This paper constructs a dual generator grid-connected control system based on the three-stage brushless synchronous generator for more electric aircraft (MEA), and conducts research on the DC side voltage and power stability control of the parallel power generation system. By combining model predictive control (MPC) strategy with dynamic compensation droop control strategy, a grid-connected voltage control strategy with the finite-control-set model predictive control (FCS-MPC) is proposed. A grid-connected simulation model of two three-stage generators was built in MATLAB/Simulink, and the adaptability of the FCS-MPC based grid-connected voltage regulation algorithm in the three-stage power generation system (TSPGS) was verified by simulation experiments with different power allocation ratios. At the same time, real-time adjustment of power allocation ratios was achieved, providing technical support for the design of generator control units (GCU) and improving the stability of the DC terminal power supply system.