Content :

The 11000V series medium voltage IGBT drives are regarded as FGI's main low harmonics distortion, regenerative operation and cost-effective high voltage motor starters, whose output voltages of each unit per phase are superimposed to form a multi-level high voltage output. There is no need to output the filtering device, the current harmonics are small, and there is no damage to the cable and motor insulation. The 11kV high voltage inverter is largely used in applications of power generation, petrochemical, metallurgical and so on.





Structure





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Power cabinet


Each phase is connected in series by a multi-level unit;
Unit standardized structure, 3kV/6kV/10kV unit junction is the same;
The unit communicates with the control cabinet through the optical fiber to control good performance.


Control cabinet


The control core is based on DSP+FPGA, the system is powerful and can meet the customer's needs to the greatest extent;
Independent main control box, plug-in control board, easy to install and maintain;
Rich interface with multiple choices.


Operating Principle


     


The medium voltage drive is composed of switch cabinet, phase shift transformer cabinet, power unit cabinet control cabinet. Among them, the switch cabinet is different according to different sites.The equipment adopts the high-high voltage source type inverter circuit structure, the power units are connected in series, the output is superimposed into high voltage, and directly output to the high voltage motor.                               


 


3kV series MV Drives with 3 units per phase  /  6kV series MV Drives with 5 units per phase / 10kV series .fgi-tech.com