Application of High Voltage Variable Frequency Speed Regulation System in the Main Mine Fan

Project overview

The FBDCZ in the mine ventilation opening of a coal mine of Shanxi Meijing Group is driven by two 10kV / 900kW asynchronous motors, the fan adopts industrial frequency constant speed drive, the air volume and negative pressure control is mainly achieved by adjusting the baffle position or fan angle, not only the energy waste is serious, and manually adjust the baffle or fan angle need to stop the machine, and remove the screws, which wastes time and effort and affects the production, and it’s easy to produce security risks once the screws are not tightened.

Schematic plan

Benefit analysis

Energy saving, saving rate up to 30%;

Motor to achieve soft start, effectively avoid the impact of current;

System power factor has been significantly improved;

Improve the field automation level and reduce labor intensity.