摘  要：傳統(tǒng)高爐送料卷揚機利用電機轉(zhuǎn)子串電阻的調(diào)速方法，調(diào)速平滑性差，調(diào)速范圍有限，而且能耗高，效率低。而引入變頻器改造后，可以實現(xiàn)過載保護(hù)，3段速控制，具有過流、過壓、欠壓、過載、短路和故障停車等多種保護(hù)功能，是一種良好的控制方案。 關(guān)鍵詞：變頻器；高爐卷揚機；調(diào)速 Abstract: The traditional blast furnace feeding winch uses the method that motor rotor series resistance to adjust speed, the smoothness of speed adjustment is poor, the speed range is limit, and the energy consumpt[登陸后可查看全文]