Design of Frequency-conversion Speed-regulation Device of Continuous Shearer

Design schemes of hardware and software of a frequency-conversion speed-regulation device of continuous shearer were introduced. Firstly the vector frequency converter was selected according to requirements of continuous shearer on frequency converter, then designs of main circuit, control circuit, leakage protection circuit, radiate module and software of the device were discussed in details. The device realizes motion control of continuous shearer. The field application indicated that the device is practical and reliable and has easy maintenance.