Dynamic simulation model for two-phase mutually coupled reluctance machines

This paper presents a simple yet robust and flexible dynamic simulation model for two-phase reluctance type machines. Normalized electromagnetic properties of the lamination geometry, the ´flux map´, are obtained using nonlinear magnetostatic finite element analysis (FEA). A data conversion algorithm is developed to convert this data into a form suitable for voltage driven dynamic simulation, i.e. a two-phase coupled flux-MMF-position characterization. System dynamic equations are derived and solved with the Gauss-Seidel method using the converted data without further need for FEA. Comparison with experimental results for an 8/4 flux switching machine with asymmetry shows good agreement. This model can be used to rapidly simulate any winding configuration or excitation scheme based upon the characterized geometry and is, thus, especially suitable for commercial design.