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. 30, 2019
Filed:
Mar. 15, 2018
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Paul Goodjohn, Crestwood, KY (US);
Joseph Wilson Latham, Louisville, KY (US);
Michael Lee McIntyre, Louisville, KY (US);
Haier US Appliance Solutions, Inc., Wilmington, DE (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Abstract
A method of operating a compressor includes obtaining a harmonic series representation of speed variation as the rotor rotates through each revolution. The method includes regulating an electric motor to compensate for or cancel out the periodic speed variation. Specifically, the method includes calculating an electromagnetic torque using a torque control input model based on the speed error and the harmonic series representation of the speed error. The operation of the electric motor is then adjusted such that the electromagnetic torque applied by the motor cancels out the speed variation such that noise and vibrations are minimized.