A Dual-Loop Feedforward Decoupling and Voltage-Feedback Field-Weakening Control Strategy for Wide-Speed-Range PMSG Aircraft Power Generation Systems
Abstract
To address Direct Current (DC) bus voltage fluctuations and degraded voltage regulation in high-speed operation of Permanent Magnet Synchronous Generator (PMSG)-based More Electric Aircraft (MEA) power systems, a dual-loop control strategy combining feedforward decoupling and voltage-feedback field-weakening is proposed. Mathematical models of the PMSG and Pulse Width Modulation (PWM) active rectifier are established, and a vector control scheme with outer voltage and inner current loops is designed. Feedforward decoupling suppresses d–q axis coupling, while voltage-feedback field-weakening extends the operating speed range and stabilizes the DC bus voltage. A MATLAB/Simulink model is developed to verify the proposed method under steady-state, load variation, and wide-speed-range conditions. Simulation results show that the proposed strategy maintains a stable 270 V DC bus voltage with fast dynamic response, accurate current tracking, and improved high-speed voltage regulation, demonstrating its effectiveness for MEA power generation systems.