A high frequency (HF) electrical model of a DC motor armature is derived from its geometric and physical properties. This model includes the armature windings' properties as well as inductive and capacitive couplings between windings, armature, axis, and commutator surfaces. It provides sufficient detail to simulate the armature's complex impedance up to a frequency of approximately 1 GHz, provides expressions to calculate the model elements from construction parameters and visualizes their influence on the impedance.

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