Guest editorial: Electromagnetic modelling exploiting fields and circuits.

The paper "Improved Methods for Stator End Winding Leakage Inductance Calculation" presents improved methods for calculating the stator end winding leakage inductance of an IM. The authors used a DC hysteresis measurement and an optimization process to parameterize the hysteresis models, and then the calculated current waveforms of the no-load transformer have been compared with the measured no-load current waveforms to validate the model. The transformer topology models used in the study are: The inductance-reluctance models; and The capacitance-permeance models. The inductance-reluctance model represents the magnetic circuit of the transformer and its stray flux paths as inductances in an electric equivalent circuit, allowing the magnetic and surrounding electrical circuit to be modelled in the electrical domain. [Extracted from the article]