Patent ID: 6020726
Filing Date: 2000-02-01
Classification: H02J,H02M,Y02E

Abstract:
An AC voltage regulator for providing a desired AC voltage to a load, the desired AC voltage being within a predetermined range above and below that of an AC voltage source, the AC voltage regulator comprising:a) a transformer having a primary winding and a secondary winding, the secondary winding configured to be placed in series between the AC voltage source and the load and whereby a ratio of number of turns in the primary winding to number of turns in the secondary winding defines said predetermined range;b) a plurality of switches configured to direct current from the AC voltage source through the primary winding of the transformer, the switches being further configured to control the direction in which current flows through the primary winding of the transformer; andc) a circuit for controlling the switches such that current is caused to flow through the primary coil of the transformer in a manner which provides the desired voltage across the load.