Abstract: A general method to analyse synchronous generator/rectifier combination is presented. The on/off status of semiconductor devices is established at every moment, so this method can simulate the steady state and instantaneous state work conditions correctly,and can be simply used to analyse the trouble work process caused by device breakdown. The simulating software for the systems containing one stage semiconductor rectifier generator, brushless AC and DC generators and so on can be estabilished by this method. It is characterized by programming simplicity, clear flowchart, high precision and shorter calculating time.

Key words: synchronous-generators, rectifiers, digital simulation