Abstract
This research presents a method of modeling and numerical simulation of a
reluctance stepper motor using reduced finite-element time-stepping
technique. In presented model, the circuit equations are reduced to
non-stationary differential equations, i.e. the inductance mapping
technique is used to find relationship between coil inductance and rotor
position. A strongly coupled field-circuit model of the stepper motor is
presented. In analyzed model the magnetostatic field partial differential
equations are coupled with rotor motion equation and solved simultaneously
in each iterative step. The nonlinearity problem is solved using
Newton-Raphson method with spline approximation of the B-H curve.
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