Patent ID: 7439713
Filing Date: 2008-10-21
Classification: H02P

Abstract:
1. An apparatus comprising: a first alternator and a second alternator, each alternator having a rotor and stator, the stator having a plurality of rotor magnetic circuits co-operatively defined between the stator and rotor and a plurality of secondary magnetic circuits, each rotor magnetic circuit encircling a first portion of at least one power winding of the stator, each secondary magnetic circuit encircling a second portion of the power winding disposed outside the rotor magnetic circuits, at least one control winding associated with said secondary magnetic circuits such that a saturating control current through the control winding magnetically saturates at least a portion of said secondary magnetic circuits distinct from the rotor magnetic circuits, the secondary magnetic circuits being paired such that in one secondary magnetic circuit the associated control winding and stator winding second portion are wound around the stator in a same direction while in the other secondary magnetic circuit the associated control winding and stator winding second portion are wound around the stator in opposite directions; a controlled current source assembly connected to said at least one control winding of each alternator and adapted to provide a periodic DC control current flow thereto, the DC current flow having a maximum amplitude above a saturation level required to saturate said portions of said secondary magnetic circuits; a first rectifier for converting alternating current from the at least one power winding of said first alternator to a direct current; a second rectifier for converting alternating current from the at least one power winding of said second alternator direct current; and a combiner circuit for combining direct current from said rectifiers into an alternating current output.