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:
Aug. 02, 2005
Filed:
Sep. 23, 2002
Gregg Jonsson, Batavia, IL (US);
Scott Mayhew, North Aurora, IL (US);
Scott Wakefield, Plano, IL (US);
Daniel Zuzuly, Geneva, IL (US);
Gregg Jonsson, Batavia, IL (US);
Scott Mayhew, North Aurora, IL (US);
Scott Wakefield, Plano, IL (US);
Daniel Zuzuly, Geneva, IL (US);
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Abstract
A motor controller system comprises solid state switches for connection between an AC line and motor terminals for controlling application of AC power to the motor. A user input elements selects a current imbalance parameter. Current sensors sense current in each winding of the motor. A control circuit controls operation of the solid state switches. The control circuit compares the sensed currents with the selected imbalance parameter to determine if a fault condition exists.