Application of permanent magnet motor to drive longwall shearer mining pulling

The paper presents results of a computer simulation from the applications of a synchronous motor with permanent magnets to drive of a mining longwall shearer pulling. The results were compared with currently used to drive pulling systems the squirrel-cage asynchronous motor supplied by frequency converter. The loads occurring in the systems of mining shearer pulling is characterized by high dynamics and variability. The results of a dynamics parameters, economics and especially thermal propulsion using a permanent magnet synchronous motor used in place of the squirrel-cage asynchronous motor commonly speak for use this type of motors on drives of a mining longwall shearer pulling.