ABSTRACT
This chapter presents steady-state models and dynamic models of a synchronous generator. For a round-rotor generator, the steady-state model can be represented by a voltage source behind a synchronous reactance. The electromagnetic dynamics of a synchronous generator are related to the voltage and flux linkage of a circuit, which can be expressed by Faraday's Law. The dynamic models of a synchronous generator are expressed in the rotor reference frame, or dq-reference frame. The chapter shows a cross section of a two-pole synchronous generator with a salient rotor. It examines the concept of space vector, which has been widely used in ac machine and power electronics. Compared to a round-rotor generator, the flux space vector formed in the air gap due to a salient-rotor generator's stator currents does not have a constant magnitude. This is due to the saliency of the rotor.
