Synchronous generator microcomputer exciting arrangement base on ARM processor and PLC

Disclosed is a synchronous generator microcomputer exciting arrangement based on ARM processor and a PLC, comprising a signal measuring module, a PLC control module, an IGBT power unit, a magnetic blow-out switch, and a build-up excitation loop. Further comprised is an ARM9 signal processing module. The signal measuring module collects the generator parameters to input into the ARM9 signal processing module. The ARM9 signal processing module completes the excitation adjusting parameter operation, man-machine interaction, the analysis of electric energy quality, the Ethernet communication, and the like, and inputs the excitation adjusting parameters to the PLC control module. The PLC control module outputs the PWM pulse and control signals to the IGBT power unit for adjusting the field current and controlling the magnetic blow-out switch, the build-up excitation loop, and the generator circuit breaker for completing the excitation, field suppression, grid connection, and other control and protective functions.