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:
Nov. 22, 2005
Filed:
Aug. 31, 2004
Albert L. Markunas, Roscoe, IL (US);
John F. Defenbaugh, Rockford, IL (US);
Michael Harke, Madison, WI (US);
Charles Romenesko, Roscoe, IL (US);
Daniel M. Saban, Rockford, IL (US);
Albert L. Markunas, Roscoe, IL (US);
John F. Defenbaugh, Rockford, IL (US);
Michael Harke, Madison, WI (US);
Charles Romenesko, Roscoe, IL (US);
Daniel M. Saban, Rockford, IL (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
A system for enhancing the performance of a carrier insertion sensorless (CIS) position sensing system for a wound field synchronous machine that utilises the positively rotating components (+2ωt) of the carrier second harmonic currents that contain rotor position information before field excitation to serve as a north-south pole indicator that determines if the CIS system has locked onto the north or south pole of the rotor.