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. 22, 2018
Filed:
Jan. 09, 2017
Whirlpool S.a., Sao Paulo, BR;
Marcelo Zanelato, Joinville, BR;
Marcos Roberto de Souza, Joinville, BR;
Whirlpool S.A., , BR;
Abstract
A device, system and method for starting a single-phase induction motor. The method includes: i) energizing the start winding () and continuously estimating an operating rotation (R) of the motor throughout its operation; ii) measuring a first phase shift level (D) between at least two electrical quantities along a first stability stage (E); iii) monitoring the variation of the first phase shift level (D) according to the increase of the operating rotation of the motor along the first stability stage; iv) detecting an inflection stage (E) from the first phase shift level to a second phase shift level (D), when the operating rotation is close to a regime rotation (R); v) measuring the second phase shift level (D) between at least two electrical quantities of the motor along a first stability stage (E); and vi) de-energizing the start winding when the operating rotation reaches the regime rotation.