Non-linear Modeling of a Multi-Layer Switched Reluctance Motor with Magnetically-Disconnected Stator Modules

Abstract

Analytical modelings are not only rapid tools for the analysis of electrical machines, but also are precise enough compared to numerical methods. On the other hand, switched reluctance machines have non-linear magnetic features and doubly-salient configuration. Due to these features, finite element analysis (FEA) is usually applied to attain the main characteristics of the machine which is time-consuming. In this research, an improved non-linear magnetic equivalent circuit (NLMEC) for a fault-tolerant modular switched reluctance motor with three layers of C-shape stators is developed to achieve the main features of the motor. To clarify the accuracy of the model, a 3D finite element analysis is adopted, and the results are compared with analytical solutions. Thanks to FEA, it is elucidated that the results attained from the developed circuit are accurate enough in comparison with those issued from FEA. It is also illustrated that this method saves a large time compared to FEA, which is a valuable factor for preliminary design stages.