Computer simulation of a three-phase brushless self-excited synchronous generator

Computer simulation of the operating characteristics of a three-phase brushless synchronous generator with a self-exciter is presented. A voltage driven nonlinear time-periodic FEA is utilized to compute accurately the magnetic field distribution and the induced voltages and currents simultaneously. A method for numerical modeling of the diodes is also discussed. First, the computation procedure is briefly addressed, followed by the comparison between computed results and the experimental ones. The agreement between results is very good verifying the computational approach.