System-Level Electromagnetic Transient Model of Switched Reluctance Motor Drive System

This paper presents a comprehensive electromagnetic transient model for a switched reluctance motor to enable its simultaneous integration into an electromagnetic transient (EMT) type solver with surrounding drive components. In this regard, a circuit-based representation of the machine is developed and used. The proposed model seamlessly integrates a nonlinear permeance network. The machine’s electromagnetic model is automatically constructed using a mesh-based approach, enabling local studies within the machine while accounting for the complete drive system. The airgap is modeled with variable permeances, enabling transient studies without remeshing or reconnecting nodes during runtime. Comparison with the finite element-based model confirms the accuracy of the proposed model and demonstrates its lower computational time. The proposed model is used to simulate transient scenarios of the entire switched reluctance drive system under faulty conditions.