Loss-Surface-Based Iron Loss Prediction for Fractional Horsepower Electric Motor Design

摘要

A modified loss-surface approach for iron loss prediction in fractional horsepower motors is proposed which is especially suitable when the flux density distribution contains a high number of harmonics, and/or when only insufficient datasheet values are available. The requirements on such loss-surface determination and specific aspects of its realization are investigated. The approach is validated experimentally by investigation of a toroidal iron stack of similar size as that of fractional horsepower machines which motivated this research. The predicted and the measured iron losses differ at a maximum of 4.6 %.