航空无刷同步起动/发电机单相交流励磁系统研究

Research on Single-Phase AC Excitation System of Aero Brushless Synchronous Starter/Generator System

针对航空无刷同步起动/发电机,进行了单相交流励磁下励磁系统的特性研究。利用有限元仿真分析方法,对单相励磁下励磁机静止时的电压输出特性进行研究,并探讨主发电机的励磁特性,寻求主发电机最优励磁条件并通过试验进行验证;开展旋转状态下交流和直流励磁时主发电机励磁特性分析;通过对比直流励磁特性曲线与交流励磁特性曲线,得到励磁机交/直流励磁最优切换区间。

In allusion to aero brushless synchronous starter/generator system, the characteristics of the excitation sys- tem were researched under the single-phase AC excitation condition. Under the single-phase AC excitation condition, the output voltage characteristic of the magnetizing exciter was analyzed in stationary state by using the finite element analysis method. The main generator excitation characteristic was also studied, and the generator optimal excitation condition was found and verified by experiment. In rotating state, the characteristic of the main generator excitation was analyzed under the single-phase AC excitation condition and DC excitation condition respectively. By comparing the DC and AC excitation characteristic curve, the optimal speed range for AC/DC switching was obtained.