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:
Apr. 15, 2014
Filed:
Oct. 09, 2010
Lixiang Wei, Whitefish Bay, WI (US);
Zhijun Liu, Menomonee Falls, WI (US);
Brian Patrick Brown, Mayville, WI (US);
David W. Kirschnik, Germantown, WI (US);
Russ J. Kerkman, Milwaukee, WI (US);
Richard A. Lukaszewski, New Berlin, WI (US);
Gary Skibinski, Milwaukee, WI (US);
Carlos Daniel Rodriguez-valdez, Glendale, WI (US);
Lixiang Wei, Whitefish Bay, WI (US);
Zhijun Liu, Menomonee Falls, WI (US);
Brian Patrick Brown, Mayville, WI (US);
David W. Kirschnik, Germantown, WI (US);
Russ J. Kerkman, Milwaukee, WI (US);
Richard A. Lukaszewski, New Berlin, WI (US);
Gary Skibinski, Milwaukee, WI (US);
Carlos Daniel Rodriguez-Valdez, Glendale, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A method is provided for detection of a ground fault in a high resistance network in a voltage source power conversion circuit comprising a power converter that converts incoming AC power to DC power applied to a DC bus and an inverter that converts DC power from the DC bus to output AC power. The method includes detecting a midpoint-to-ground voltage between a low side of the DC bus and a ground potential and detecting the presence of a ground fault in a high resistance network based upon the detected midpoint-to-ground voltage.