Modeling of induction motor operation modes considering supply voltage asymmetry

Induction motors are key elements of many electric power systems, especially electrification systems for technological installations of oil and gas facilities. Improving the efficiency, reliability and safety of induction motors requires accurate modelling of electromagnetic and mechanical processes, especially in transient conditions and with supply voltage asymmetry. This article presents a review of the mathematical model of a wound rotor induction motor based on the mesh-current method for interphase voltages. The model considers the influence of supply voltage asymmetry and provides an opportunity to study transients occurring in various operating modes, including starting. Using a proper model will enable prediction of machine main element service life and improved fault diagnostic work quality. This study provides modeling results, compares them to existing models, and demonstrates the effectiveness of the proposed method.