Scraper conveyor no-load or light-load work in the whole machine efficiency is not high,the power supply line power factor is low and other phenomena,resulting in a waste of power,increasing operating costs.This design scraper conveyor frequency converter,the frequency converter can be based on the load changes,through the frequency adjustment of real-time speed regulation,a greater degree of power savings,reduce costs.Will design frequency converter applied to coal mine for underground test,through the real-time frequency conversion speed control,frequency converter frequency two working mode of power factor,power measurement can be seen,real-time frequency conversion speed control scraper conveyor tonnes of coal power saving rate is about 20％.
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