A detector for detecting rotor position of a brushless generator having a motive power shaft, a permanent magnet generator (PMG) having a set of armature phase windings and a main generator portion having a set of armature phase windings includes a circuit coupled to the armature phase windings of the...http://www.google.ca/patents/US5495162?utm_source=gb-gplus-sharePatent US5495162 - Position-and-velocity sensorless control for starter generator electrical system using generator back-EMF voltage
