Dual quadrant medium voltage VFD 

 Dual Quadrant Medium Voltage Variable Frequency Drive for Fan, Pumps and Belt Conveyor    GBP-D Series Medium Voltage VFD Structure  GBP-D series medium voltage VFD structure as shown below, consists of phase-shifting transformer cabinet, power unit cabinet and control cabinet ( bypass switch cabinet is optional according to customer requirements.)    GBP-D Medium Voltage Variable Frequency Drive Principle System  GBP-D medium voltage variable frequency drive use series power unit  technology to solve the voltage withstand problem. Multi PWM signal in series connection stacking after phase shift to reduce harmonics from output side, decrease dv/dt of output voltage; reduce the harmonic which feedback to the power grid and reduce the harmonic pollution to the power grid through current multiplex technology. The main con…