Patent · US Active

Apparatus for determining insulation resistance at a PV generator, and photovoltaic installation

US10197608B2 · kind B2 · utility

0Cited by

0References

12Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Mario Willenberg · Paderborn, DE
Dirk Hermeling · Petershagen, DE
Volker Bergs · Eppelheim, DE
Karl Nesemann · Kaufungen, DE

Key dates

Filing date	Aug 18, 2017
Grant date	Feb 5, 2019
Priority date	—
Expiry date	Aug 18, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/56
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An apparatus for determining insulation resistance at a PV generator includes a first unit configured to shift a generator potential at an output terminal of the PV generator, and a second unit. The second unit is configured to determine the insulation resistance by: connecting a measurement voltage to the output terminal of the PV generator, measuring a first current value and a first voltage value at the output terminal of the PV generator before the measurement voltage is connected, measuring a second current value and a second voltage value at the output terminal of the PV generator after the measurement voltage is connected, and determining the insulation resistance of the PV generator based on the measured first and second current values and the measured first and second voltage values. The first and second units are connected in series.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.