Design of Medium-voltage Frequency-conversion Speed-regulation System with Double Three-level Based on PLC

Design of Medium-voltage Frequency-conversion Speed-regulation System with Double Three-level Based on PLC

Blog Article

In view of problems of high energy consumption, many fault points and bad reliability caused by TKD speed-regulation mode used by electrical control system of hoist of old auxiliary shaft of a Coal Mine, the paper proposed a reform scheme of medium-voltage belt keeper frequency-conversion speed-regulation system with double three-level based on PLC.It introduced hardware structure, working principle and functions of high-low voltage distribution system, back-to-back medium-voltage frequency converter with double three-level, multi-PLC Cord network control system and upper computer monitoring system.The actual application shows that the reformed system has low energy consumption, stable and reliable running.