DC motor hybrid equivalent circuit model and numerical simulation

This paper describes an example implementation illustrating methods for the derivation, SIMULINK implementation and educational application of complete circuit DC machine models and related methods for measuring machine parameters. The model represents the complete electric circuit including all armature and field coils and two different equivalent circuits allowing for the switching action of commutation. It is shown how to obtain inductive circuit parameters by innovative measurement on an actual machine and how results from simulation compare to laboratory testing. The resulting "complete" model is more logical than conventionally used equivalent circuits and aid in understanding of the principles of DC machines.