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

In allusion to aero brushless synchronous starter/generator system,the characteristics of the excitation system 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.