Patent ID: 8928293
Filing Date: 2015-01-06
Classification: H02P

Abstract:
1. An electrical machine comprising: a stator including a main armature winding, an exciter field winding, and a transformer primary winding; a rotor operatively connected to rotate relative to the stator, wherein the rotor includes an exciter armature winding operatively connected to the exciter armature winding for field excitation therebetween, a main field winding operatively connected to the main armature winding for field excitation therebetween, and a transformer secondary winding operatively connected to the transformer primary winding to form a rotating transformer; and a generator control unit operatively connected to the main armature winding, exciter field winding, and transformer primary winding to control the main armature and exciter field windings based on excitation in the transformer primary winding received from the transformer secondary winding.