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本文介绍采用通用变频器将普通三连轧机改造为高速三连轧机的方法，重点分析实现转差频率控制的方法、张力控制的作用及系统实现，并给出系统的实际运行结果。
In this paper, a method of transforming common triple continuous rolling mill into high-speed three-stand rolling mill by universal frequency converter is introduced in this paper. The method of realizing slip frequency control, the role of tension control and system realization are mainly analyzed. The actual operation results of the system are also given.