Power System Control of More-electric Aircraft Engine Based on Double Closed Loop Feedback

Modern more-electric aircraft engine has higher requirements for electrical energy and security operation. The traditional aircraft power supply system is relatively inadequate. High-voltage DC power generation system has become the first choice of aircraft power supply system because of its advantages of high efficiency, light quality and high reliability. However, the traditional PI voltage regulation scheme cannot meet the dynamic performance requirements of the system because of the large capacitance used for filtering at the output of DC power system. Therefore, this paper establishes a model of High-voltage DC power generation system and proposes a double closed-loop feedback voltage regulator technology based on excitation current feedforward and load voltage feedback to ensure the stable operation of the power system. The steady-state and dynamic characteristics of the double closed-loop feedback system are analyzed in theory. The simulation results show that the designed double closed-loop feedback voltage regulator can make the system respond quickly, which verifies the effectiveness and feasibility of the designed system.