Effects of Partial Non-Magnetic Improvement Length and Position in the Bridge on the Flux of a Rotor Core for Obtaining a High Magnetic Flux

The present study investigates the impact of a non-magnetic improvement treatment on the bridge of the rotor core sheet, with an emphasis on the effects of the length and position of the treatment on magnetic properties. A prototype rotor core was fabricated by laminating 60 rotor core sheets. The effect of the non-magnetic improvement length on the magnetic flux at the relative improved position of 0% was evaluated, and the rotor core improved with an improvment ratio of 70%, showing a 38.0% magnetic flux increment. The effect of the relative improvement position on the magngetic flux with the improvement ratio of 70%-76 % was evaluated. Findings demonstrate that the rotor core with a relative improvement position of −27% exhibits a significant magnetic flux increment of 40.1%.