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Presented here is the development of a time stepping coupled finite-element state-space (CFE-SS) modeling environment, totally within the natural time domain ABC flux-linkage frame of reference, to predict the steady-state machine parameters and performance characteristics, including laminated iron core losses, of salient-pole synchronous machines. The time stepping CFE-SS model allows one to rigorously account for the full synergistic impact of space harmonics and time harmonics on the machine parameters and performance characteristics.Manuscript

Used here is the coupled finite-element state-space (CFE-SS) approach, based on the natural ABC flux-linkage frame of reference, to predict a salient-pole synchronous generator's parameters and performance, including damper bar currents and iron core losses, under open-circuit short-circuit impedance, and infinite bus load conditions. The full synergistic effects of space harmonics resulting from the magnetic circuit geometry, saliency, saturation, winding layouts, slotting, and time harmonics resulting from the nonsinusoidal armature currents and field as well as damper bar currents, are included in the simulations.

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