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Application of High Voltage Variable Frequency Speed Regulation System in Roller Press Project Overview
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In order to increase the daily processing capacity of ore, a tungsten plant in Ninghua Fujian has introduced a roller pressure system; the dynamic and fixed roller of roller press is respectively driven by two sets 10kV/630kW motors. At present, almost all the roller presses are constant frequency speed control, which results in the unadjustable output, and the over-current phenomenon caused by the imbalance of dynamic and fixed roller motor power.


Schematic plan

Benefit analysis
 Master and slave control to achieve dynamic roller and fixed roller power balance, improving the system stability;
 Roller presses capacity can be adjusted in real time according to site conditions, to avoid energy waste.
 Motor to achieve zero impact soft start;
 Low frequency large torque characteristics of the inverter fully meet the roller press heavy load start。


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