Circuit and method for reducing electrical energy stored in a lead inductance for fast extinction of plasma arcs

A circuit configuration (9) for reducing electrical energy stored in a lead inductance formed by a number of leads (3.1, 3.2), wherein said leads connect a direct current power supply unit (5) with a load (2), in particular a plasma application, comprises a switching means (SS) in operative connecti...

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Bibliographische Detailangaben
Hauptverfasser:	RAFAL BUGYI, PAWEL OZIMEK
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A circuit configuration (9) for reducing electrical energy stored in a lead inductance formed by a number of leads (3.1, 3.2), wherein said leads connect a direct current power supply unit (5) with a load (2), in particular a plasma application, comprises a switching means (SS) in operative connection with one of the leads (3.2) for enabling/interrupting power supply to the load. The proposed circuit configuration (9) further comprises a first electrical non-linear device (D2) arranged in parallel with the switching means (SS); a energy storing device (C) arranged in parallel with the switching means (SS) and in series with the first electrical non-linear device (D2); and a pre-charging circuit (7) in operative connection with the energy storing device (C) for charging the energy storing device to a pre-determined voltage level while power supply to the load (2) is enabled.