The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Nov. 25, 2003
Jih-sheng Lai, Blacksburg, VA (US);
Arshad Mansoor, Oak Ridge, TN (US);
Arindam Maitra, Knoxville, TN (US);
Frank Goodman, Palo Alto, CA (US);
Jih-Sheng Lai, Blacksburg, VA (US);
Arshad Mansoor, Oak Ridge, TN (US);
Arindam Maitra, Knoxville, TN (US);
Frank Goodman, Palo Alto, CA (US);
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Abstract
A multilevel converter-based, intelligent, universal transformer includes back-to-back, interconnected, multi-level converters coupled to a switched inverter circuit via a high-frequency transformer. The input of the universal transformer can be coupled to a high-voltage distribution system and the output of the universal transformer can be coupled to low-voltage applications. The universal transformer is smaller in size than conventional copper-and-iron based transformers, yet provides enhanced power quality performance and increased functionality.