关键词: 直流电源系统, 永磁辅助式同步磁阻电机, 电源变换器, 控制策略, 仿真验证

Abstract: Combined with the characteristics of permanent magnet assisted synchronous reluctance motor and the requirements of aircraft for high efficiency, high power density and high speed of power generation system, based on the comparison of the advantages and disadvantages of different types of starting generators, a new configuration of 270 V high voltage DC power supply system for permanent magnet assisted synchronous reluctance machine was proposed. The working principle and structural characteristics of the motor and power converter were given. The dual three-phase permanent magnet assisted synchronous reluctance qnachine voltage outer loop under the system power generation mode was emphatically analyzed. Based on the constant torque angle current inner loop control strategy, the Simulink generation control model was established for the rated power 45 kW DC power system. The steady-state voltage regulation, load transient transformation and distortion spectrum of the motor were simulated respectively. The results show that the system performance can meet the requirements of the national military standard and aircraft for power system.

Key words: DC power supply system, permanent magnet assisted synchronous reluctance machine, power converter, control strategy, simulation verification