Medium-high voltage frequency converter with integrated structure

The invention relates to a medium-high voltage frequency converter with an integrated structure, which comprises a control unit, a variable-frequency power unit, a switching unit and a transformer unit, and is characterized in that the variable-frequency power unit and the transformer unit are arran...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHANG QISHENG, GUO DUHOU
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a medium-high voltage frequency converter with an integrated structure, which comprises a control unit, a variable-frequency power unit, a switching unit and a transformer unit, and is characterized in that the variable-frequency power unit and the transformer unit are arranged front and back in a frequency converter cabinet. A series ventilation cooling system is arranged between the variable-frequency power unit and the transformer unit. The variable-frequency power unit adopts a drawer-type structure and comprises a plurality of power units which are vertically arranged with each column corresponding to a phase. Compared with the prior art, the medium-high voltage frequency converter has the advantages that: 1) the control unit, the variable-frequency power unit, the switching unit and the transformer unit are formed in an integrated structure, so the structure is impact and the cost is low; 2) the variable-frequency power unit is assembled in a vertical manner by adopting a drawer