针对农用电力排灌站电动机调速改造问题,讨论了采用交流励磁和交交变频实现超/低同步调速的控制方法,给出了以16位单片机及现场可编程集成电路为核心的控制系统软硬件设计。 Aiming at the problem of motor speed regulation in agricultural power station, the control method of ultra-low synchronous speed control using AC excitation and frequency conversion is discussed. The hardware and software of the control system with 16-bit singlechip and field programmable integrated circuit design.