Reduction Of Electromagnetic Interference In Single Phase Induction Motor By Coating The Winding With Al2o3 Nano Filler Mixed Enamel

It has been observed that the addition of nano fillers to the enamel can greatly improve the thermal, mechanical and electrical properties of enamel. Al2O3 has been tested as nano filler. The micro particles of Al2O3 are converted into nano particles by using the ball mill method. Scanning electron microscope (SEM) has been used to augment the particle size of the prepared nano particles. The Al2O3 nano filler was mixed with enamel by using ultrasonic vibrator. The enamel filled with the Al2O3 nano filler was coated on the windings of a motor. The values of electromagnetic inference produced by normal induction motor and nano coated induction motor was measured and analysed. There was a reduction of 5 to 15% in the values of the electromagnetic interference produced by the normal induction motor when compared to that of Al2O3 nano filler mixed enamel coated induction motor at various distances.