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US 12,142,906 B2Granted
Photovoltaic rapid shutdown and arc sensing system
OwnerCedric Somers, Marc-André Forgetinventors
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Abstract
The present disclosure provides a system, apparatus and method for providing rapid shutdown for photovoltaic power systems and provides a system, apparatus and method for providing arc sensing for photovoltaic power systems. An AC current can be put on the DC bus to control PV panel shutdown. Local mean decomposition can be used to sense arcing on the DC bus.
Claims8
A method for providing emergency de-energizing of a photovoltaic panel, the method comprising:
- injecting AC current over a DC bus of a PV panel array;
- isolating said AC current from said DC bus;
- and
- using said isolated AC current to cause a passive circuitry to allow flow of DC current from said PV panels over said DC bus, wherein an interruption of said AC provides said emergency de-energizing of said DC bus.
1 more element
Dependencies are inferred from the claim text.