Design of AC Excitation Variable Speed Constant Frequency Power Generation System

The continuous increase of electric equipment has put forward more stringent requirements for the aircraft power system. The traditional three-phase synchronous generator uses the constant speed drive, which increases the aircraft weight and restricts the generator capacity. To this end, the variable speed constant frequency power system is studied in this paper, which utilizes the brushless doubly-fed machine as the main generator and gets rid of the constant speed drive. The operating principle of the brushless doubly-fed machine is analyzed and the system model is established in Matlab/Simulink. The system controller is designed based on the stator field orientation method. Finally, the simulation results show that the proposed power generation system can generate the desired AC power under variable speed.