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:
Jan. 17, 2023
Filed:
May. 17, 2018
Sma Solar Technology Ag, Niestetal, DE;
Gerd Bettenwort, Kassel, DE;
Christopher Merz, Kassel, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
A method for detecting a potential-induced degradation (PID) of PV modules of a PV installation includes operating a PV generator at a maximum power point (MPP), at a first generator voltage (U) and first generator current (I), and at a second generator voltage (U) and second generator current (I), where a first power (P) at the first generator voltage (U) is in a predefined first ratio V=P/Pand V≤1, with the power (P) at the maximum power point (MPP) of the PV generator, and where a second power (P) at the second generator voltage (U) is in a predefined second ratio V=P/Pand V<1, with the first power (P) of the PV generator, and where a quantity Y that characterizes a progress of the potential-induced degradation (PID) is determined from the values of the voltages (U, U) and/or the currents (I, I).