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:
Jul. 04, 2006
Filed:
Mar. 09, 2004
Applicant:
Anil Tuladhar, Dearborn Heights, MI (US);
Inventor:
Anil Tuladhar, Dearborn Heights, MI (US);
Assignee:
Ballard Power Systems Corporation, Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/556 (2006.01); H02M 3/335 (2006.01); G05F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Techniques for determining root mean square (RMS) values of a signal for controlling operation of grid-linked converters, such as DC-to-AC inverters, via squaring the signal, sampling the squared signal n times during a cycle period to obtain n samples, summing the first n−1 samples to obtain a first value, multiplying the first value by a sampling time and a frequency of the signal to obtain a second value, determining a compensation factor, adding the compensation factor to the second value to obtain a third value, and determining a square root of the third value to obtain a RMS result.