Content :

FGI `s 3kV medium voltage drives take high-speed DSP as the control core, adopt space voltage vector control technology and power unit serial multi-level technology, and are designed with high reliability, easy operation and high performance to meet users` requirements of various load speed regulation, energy saving and production processes improvement. The MV drives` harmonic index is much smaller than the harmonic standard of IEEE 519-2014. The high voltage AC inverter applies modular design and multi-stage power unit series technology.


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 se .fgi-tech.com