Verification of Loss Reduction based on New Loss Analysis for Slotless PM Motor

Abstract

This paper presents the loss analysis and reduction of Slotless Permanent Magnet Motors (SLPMM). The resistance and current at the inverter carrier frequency are introduced, by which loss generated by the high frequency current (carrier loss) can be separated from the total loss. The experimental studies using 200W, 3000min^-1 SLPMM with halbach magnet array show the effective reduction of carrier loss. Finally, the experimental studies using the SLPMM with a series reactor proved the proposed loss analysis.