介绍了应用于武钢高速线材生产线精轧机传动的新型同步大电机，并对其控制系统原理进行了分析。这种国外引进的同步机采用无刷激磁方式，在冶金行业更体现了维护上的简单可靠；同步机的调速采用数字式交－ 直－ 交变频，更加迅速准确，较好地满足了线材高速轧制的需要。 This paper introduces a new synchronous large motor which is applied to the transmission of finishing mill of WISCO high speed wire rod production line and analyzes its control system principle. This introduction of foreign synchronous machine using brushless excitation, the metallurgical industry more reflects the maintenance of the simple and reliable; synchronous machine speed using digital AC - DC - AC frequency, more quickly and accurately, to better meet the wire Need for high speed rolling.