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:
May. 14, 2019
Filed:
Mar. 09, 2018
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
University of Louisville Research Foundation, Inc., Louisville, KY (US);
Joseph Wilson Latham, Louisville, KY (US);
Paul Goodjohn, Crestwood, 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 synchronous motor includes using a rotor angle observer model to calculate an observed rotor angle and a speed estimator model to calculate an observed angular speed of the rotor. The observed rotor angle may be used to ensure that the stator magnetic field generated by the stator is oriented 90° ahead of the rotor magnetic field. The observed angular speed may be used to regulate the motor operation to achieve the desired speed.