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VARIABLE VOLTAGE LOAD TAP CHANGING TRANSFORMER

United States Patent Application

20090200290
A1
View the Complete Application at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Power supply systems for subsurface heaters are described herein. The power supply system includes a variable voltage, load tap changing transformer. Systems and methods for supplying electrical power to subsurface heaters using the variable voltage transformers are also described herein.
Cardinal, Paul Gregory (Houston, TX), Burns, David (Houston, TX)
12/ 250,386
October 13, 2008
GOVERNMENT INTEREST [0003] The Government has certain rights in the invention pursuant to Agreement Nos. SD 10634 and NFE 062050824 between Sandia National Laboratories (operating under Agreement DE-AC04-94AL85000Sa for the U.S. Department of Energy) and Shell Exploration and Production Company.