The application of high voltage four quadrant VFD on the hoist electric control system two sets driver two motors

Hiost is one of the most important transport equipment in mine production.The main shaft and auxiliary shaft hoist of Taihang iron mine before modification. It was motor rotor series resistance speed governing way, which is high energy consumption. Due to the technique is out of state administration of work safety requirements, the field change it into VFD control technology.Since main shaft and auxiliary shaft hoist machine using the same equipment, the hoist applied electric control system-two sets driver two motors standby each other model to improve the reliability and security of the transportation system.