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:
Sep. 05, 2017
Filed:
Feb. 01, 2013
Applicant:
Siemens Aktiengesellschaft, München, DE;
Inventor:
Heng Deng, Brande, DK;
Assignee:
SIEMENS AKTIENGESELLSCHAFT, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 23/02 (2006.01); G01R 25/00 (2006.01); H02M 5/42 (2006.01); H02J 3/38 (2006.01);
U.S. Cl.
CPC ...
G01R 23/02 (2013.01); G01R 25/00 (2013.01); H02J 3/386 (2013.01); H02M 5/42 (2013.01); Y02E 10/763 (2013.01);
Abstract
A method and an apparatus for determining a phase and a frequency of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component of the electric quantity, calculating a positive sequence component of the electric quantity based on the extracted fundamental component, and determining the phase and the frequency of the electric quantity based on the calculated positive sequence component.