Method and circuit arrangement for detecting an arc, and photovoltaic (PV) inverter having a corresponding circuit arrangement

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12267040
APP PUB NO 20220365145A1
SERIAL NO

17865573

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Abstract

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A method for detecting an arc in a circuit including a DC load, a DC source supplying the DC load, and a circuit arrangement between the DC source and the DC load is provided. A power flow between the DC source and an output of the circuit arrangement is cyclically interrupted by a switching circuit, such that the power flow is enabled in an active time window with the first period Δt1 and suppressed in an inactive time window with the second period Δt2. Detection of a current I and/or a voltage U in two consecutive active time windows and comparison of the detected values of current I and/or voltage U of the active time window with the corresponding detected values from the preceding active time window can signal an arc if these values of the active time window differ from the corresponding values of the preceding active time window by more than a threshold value.

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Patent Owner(s)

Patent OwnerAddress
SMA SOLAR TECHNOLOGY AG34266 NIESTETAL

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kratochvil, Marcel Kassel, DE 20 237
Pape, Sybille Vellmar, DE 4 8
Schmitt, Rainer Huenfeld, DE 51 247

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