A Study of the Engineering Calculations for Iron Losses in 3-phase AC Motor Models

This paper presents a study of the practical issues that need to be addressed by the engineering approaches to the incorporation of iron loss calculations into analytical and numerical models of AC motors. The total iron loss is estimated by summing up different loss components according to the analysed engineering approach. Illustrative examples are used and these are a 3-phase interior permanent magnet (IPM) motor and a 3-phase induction motor. All the models presented are compared with the no-load and loaded conditions test data.