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.

Date of Patent:
Sep. 06, 2016

Filed:

Jun. 12, 2015
Applicant:

Karmsolar, Cairo, EG;

Inventors:

Ahmed Teirelbar, Cairo, EG;

Alia Morsi, Cairo, EG;

Assignee:

KarmSolar, Cairo, EG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G05F 1/67 (2006.01); H02P 23/14 (2006.01);
U.S. Cl.
CPC ...
G05F 1/67 (2013.01); H02P 23/14 (2013.01);
Abstract

A method is provided for setting an operating parameter for a load on a photovoltaic power source, such as an AC signal or the speed of a motor, including operating a load, using a control system, with the operating parameter set at a first value, providing a measurement of DC source voltage at the power source to the control system, and providing a measurement of DC source current at the power source to the control system, determining the logarithm of the conductance from the measurement of DC source voltage and the measurement of DC source current, and comparing a reference parameter based on the logarithm of the conductance to a reference setpoint. Based on that comparison, the operating parameter may be modified for the load if the value of the reference parameter differs from the value of the reference setpoint by more than a threshold amount.


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