Exclusive Medium voltage VFD for Hoist  

GBP-H Four Quadrant Medium Voltage Variable Frequency Drive Principle It is a special Medium Voltage Variable-Frequency Drive developed and produced by our company according to the operation requirements of mine hoist. This drive is based on the technology of series power unit and stack wave, high performance vector control technology as the core. This drive consists of rectifier phase shift transformer, power unit and control part. The output voltage range from 3 kV to 10 kV, different output voltage is with different number of power units, 3 kV has 9 units, 6 kV has 15 units, 10 kV has 24 units, power units on each phase is connected in series and stack wave to increase voltage, the power units on the three-phase is connected by Y type, outputing rated voltage directly. Powert units  The overall topology of the power unit is AC-DC-AC three-phase full-bridge rectifier, single-phase inverter output structure. Inside the power unit contains complete…