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分析了目前煤矿用国产提升机的电控调速系统存在的问题,介绍了目前国内比较成熟的交-直-交型中压变频调速的优点、工作原理并提出对提升机调速系统的改造方案。
The problems existing in the electric control system of domestically produced elevators in coal mines are analyzed. The advantages and working principles of the AC - DC - AC medium frequency VVVF in China are introduced. At the same time, Transformation program.