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:
Feb. 28, 2006
Filed:
Sep. 23, 2002
Scott Mayhew, North Aurora, IL (US);
Daniel Zuzuly, Geneva, IL (US);
Scott Wakefield, Plano, IL (US);
Scott Mayhew, North Aurora, IL (US);
Daniel Zuzuly, Geneva, IL (US);
Scott Wakefield, Plano, IL (US);
Siemens Energy & Automation, Inc., Alpharetta, GA (US);
Abstract
A motor controller comprises a plurality of solid state switches each for connection between an AC line and a motor winding terminal for controlling application of AC power to the motor. A plurality of voltage sensors, each associated with one of the solid state switches, sense voltage for an associated motor winding. A control circuit controls operation of the solid state switches. The control circuit adjusts firing to one of the solid state switches if the sensed voltage for the associated winding varies from a threshold voltage by a select amount.