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. 04, 2019
Filed:
May. 09, 2016
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventor:
Yisong Lu, Shrewsburg, MA (US);
Assignee:
ALLEGRO MICROSYSTEMS, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 21/04 (2006.01); G01R 31/34 (2006.01); G11B 19/20 (2006.01); H02P 27/08 (2006.01); H02P 6/18 (2016.01);
U.S. Cl.
CPC ...
H02P 27/08 (2013.01); H02P 6/18 (2013.01);
Abstract
Methods and apparatus to control a three-phase BLDC motor using phase current and phase voltage at zero current detection and a driving current derived from a bus current, for example. The driving current can be combined with a difference angle with an output provided to a controller to control a speed of the motor.