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:
Aug. 22, 2017
Filed:
Apr. 22, 2015
Schneider Electric Industries Sas, Rueil Malmaison, FR;
Christophe Durand, Grenoble, FR;
Delcho Penkov, Saint Martin d'Heres, FR;
SCHNEIDER ELECTRIC INDUSTRIES SAS, Rueil-Malmaison, FR;
Abstract
The invention relates to a method of starting an electric motor () powered by an alternating power supply voltage, said method consisting of supplying current to the motor () with a delay t, during each period of the power supply voltage. The starting method comprises a first sequence in which the following steps are carried out during each nperiod of the power supply voltage, where n is an integer number greater than 0: a) determine the value of a variation of a resistance of the electric motor during the previous n periods of the power supply voltage; b) compare said value of the variation of the determined motor resistance with a first threshold resistance value; c) if the value of the variation of the motor resistance is less than the first threshold value, reduce t. The invention also relates to a starter device and a computer program.