Patent ID: 9599658
Date: 2017-03-21
CPC Classifications: G01R,H01L,H02S,Y02E

Claim:
1. A method for signaling partial shadowing within a PV generator comprising at least two partial PV generators connected in parallel, comprising: performing a reference impedance measurement on each of the at least two partial PV generators in a state of substantially uniform irradiation of the PV generator; determining at least one reference resonant property of each of the at least two partial PV generators from the reference impedance measurement; performing impedance measurements on each of the at least two partial PV generators at a first operating point of the PV generator during operation of the PV generator; determining at least one resonant property of each of the partial PV generators from the impedance measurements, and detecting and signaling partial shadowing within the PV generator if a difference between the resonant properties of the partial PV generators at the first operating point differs from a difference between the reference resonant properties of the partial PV generators.