SPEED OPTIMIZATION USING VARIABLE FREQUENCY DRIVE FITTED TO DHAN FOUNDATION DEHULLER

Abstract

– Speed optimization using variable frequency drive fitted to dhan foundation dehuller were done to know the effective dehulling speed with time of dehulling in selected minor millets. The selected minor millets included proso millet, kodo millet, little millet, foxtail millet and barnyard millet. The selected speeds were 21,28 and 35Hz. Dhan foundation dehuller has an input hopper, dehulling impeller type mechanism and an outlet for dehusked grain and an aspirator for removing the lighter weight hull that it is to be separated. 1kg of raw millet of different types were taken for dehulling experiments. Head rice recovery after dehulling is lowest for kodo millet, 8.15%±5.62 followed by barnyard millet, 26.07%±11.24, foxtail millet, 46.04%±16.90, proso millet, 53.19%±14.46 and little millet,53.73%±11.93