A CONVERTER DEVICE AND A METHOD FOR THE CONTROL THEREOF

A converter apparatus for converting direct voltage into alternative voltage and conversely comprises a first VSC-converter (6) in cascade connection with at least one second VSC-converter (5). It has also a unit adapted to control the semiconductor devices of the converters and thereby the converte...

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Bibliographische Detailangaben
Hauptverfasser: ASPLUND, GUNNAR, AL-HOSINI, FALAH, BIJLENGA, BO, LUNDBERG, PETER
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A converter apparatus for converting direct voltage into alternative voltage and conversely comprises a first VSC-converter (6) in cascade connection with at least one second VSC-converter (5). It has also a unit adapted to control the semiconductor devices of the converters and thereby the converter apparatus to generate a phase voltage being constituted by the sum of the voltages generated in said first and second VSC-converters. The first VSC-converter has between the positive and negative pole (7, 8) thereof a direct voltage being substantially higher than the direct voltage of the second VSC-converter (5) between its positive and negative pole.