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:
Jun. 26, 2018
Filed:
Nov. 23, 2015
Regal Beloit America, Inc., Beloit, WI (US);
Zachary Joseph Stauffer, Fort Wayne, IN (US);
Mark A. Brattoli, Fort Wayne, IN (US);
Brian L. Beifus, Fort Wayne, IN (US);
Maung Saw Eddison, Fort Wayne, IN (US);
Ludovic Andre Chretien, Columbia City, IN (US);
Regal Beloit America, Inc., Beloit, WI (US);
Abstract
An electric motor controller for controlling an electric motor and methods of determining a loss of phase condition for at least one phase of three-phase input power provided to an electric motor controller are provided. The controller is configured to obtain phase sample data representing an input power electrical characteristic for at least one phase of three-phase power received by the controller and receive direct current (DC) bus data representing a measured DC bus electrical characteristic. The controller is also configured to calculate a ratio between the phase sample data and the DC bus data, and determine that a loss of phase condition exists for a phase of the three-phase power when the ratio exceeds a predetermined threshold.