EFFECT OF A NEW NON-ORIENTED ELECTRICAL STEEL SHEET WITH HIGH MAGNETIC FLUX DENSITY AND LOW IRON LOSS ON INDUCTION MOTOR PERFORMANCE

In this study, we developed and investigated a new non-oriented electrical steel (50H-CP) to be used in mainly induction motors. This material exhibits high flux density and low iron loss. We confirmed the effect of the new material by manufacturing a test motor and comparing its performance against another motor with a standard material (50H350). The efficiency of the motor with 50H-CP showed an improvement of 1% compared to the one with 50H350 because of the low copper losses in the former. Furthermore, the breakdown of the motor losses was evaluated using electromagnetic field analysis. The iron loss was comparable between 50H-CP and 50H350. However, 50H-CP was superior with regard to primary and secondary copper losses. From the above results, the effect of the high magnetic flux density-low iron loss characteristics of 50H-CP was theoretically confirmed.