Abstract
The aim of this paper is to evaluate the influence of electrical steels on the efficiency of three-phase induction motors. A computer procedure has been developed to predict motor performance with different electrical steels and to optimise motor design in order to reduce operating costs. Significant variations in rated efficiency have been found and the choice of electrical steels has turned out to be an important factor in motor design. The paper presents the proposed analysis and the principal results obtained in the case of two motor sizes (1.5 and 7.5 kW) and six different electrical steels.
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