System for protection of a plurality of DC voltage sources

This protection system (30) is intended for protecting a plurality of DC voltage sources (20) able to be connected in parallel between a first (16) and a second (18) input terminal of a voltage inverter (12), the voltage inverter (12) being able to convert a DC input voltage into an AC output voltag...

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Bibliographische Detailangaben
Hauptverfasser: Domejean, Eric, Cadoux, Yvan, Stepanek, Jiri, Tian, Simon
Format: Patent
Sprache:eng
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Zusammenfassung:This protection system (30) is intended for protecting a plurality of DC voltage sources (20) able to be connected in parallel between a first (16) and a second (18) input terminal of a voltage inverter (12), the voltage inverter (12) being able to convert a DC input voltage into an AC output voltage, each DC voltage source (20) being connected by a first electrical conductor (22) to the first input terminal (16) and by a second electrical conductor (26) to the second input terminal (18). The protection system (30) comprises, for each DC voltage source (20), a first cut-off member (36) and a first detector (48) of a defect of isolation of the first conductor (22) with a respect to an electrical earth (32), the first detector (48) and the associated first cut-off member (36) being connected in series between the corresponding DC voltage source (20) and the first input terminal (16) of the inverter. The protection system (30) comprises means (48) for triggering, in the event of detection of the isolation defect, of the associated first cut-off member (36) so as to open the electrical link corresponding to said first conductor (22).