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:
Jul. 11, 2006
Filed:
Jun. 08, 2004
Colin Huggett, Longmont, CO (US);
Zheng Wang, Mississauga, CA;
George You Zhou, Mississauga, CA;
Honeywell International Inc., Morristown, NJ (US);
Abstract
The present invention relates to a method of controlling a power converter () of a synchronous machine system (), the method comprising sampling phase-current values between the power converter () and the synchronous machine (); selecting a reference frame; regulating a current vector to align with the selected reference frame, the selected reference frame having a direct-axis component and a quadrature-axis component; estimating rotor speed and position as a function of instantaneous power; adjusting the selected reference frame, based on estimated rotor position, to synchronize the selected reference frame with a magnetic axis of the rotor, thereby generating a synchronized floating frame; and applying the synchronized floating frame to control the power converter (). The present invention also related to a power converter controlling apparatus () for controlling a power converter () of a synchronous machine system () without use of a machine position sensor.