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. 26, 2026
Filed:
Oct. 26, 2021
Applicant:
Nidec Global Appliance Brasil Ltda, Joinville, BR;
Inventor:
Roberto Andrich, Joinville, BR;
Assignee:
NIDEC GLOBAL APPLIANCE BRASIL LTDA., Joinville SC, BR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/18 (2016.01); H02P 6/17 (2016.01);
U.S. Cl.
CPC ...
H02P 6/186 (2013.01); H02P 6/17 (2016.02);
Abstract
The present invention refers to the use of phase advance in motors with non-ideal induced voltages, especially in motors with induced voltages that present a flat region, to avoid instability in the control, wherein the first step is to detect the passage of the voltage induced by the flat region of instability, and then apply a fixed increment in the phase advance in order to avoid the flat region. Detection can be done in two ways: by direct measurement of induced voltage; and measuring the extinguishing time of the freewheel current.