Research status and development of control technology for mine hoist

The paper analyzed status and development process of DC and AC mine hoist control system at home and abroad. It emphatically introduced application of three frequency-conversion speed-regulation systems based on double three-level topology in control system of mine hoist, namely high-voltage frequency-conversion speed-regulation system at stator side, double three-level frequency-conversion speed-regulation system of synchronous motor and AC-DC-AC voltage type SVPWM frequency-conversion speed-regulation system with double three-level. And it indicated that AC-DC-AC voltage type frequency-conversion speed-regulation system has better energy-saving effect and is most suitable for control system of mine hoist.