CASCADED POWER ELECTRONIC TRANSFORMER AND CONTROL METHOD THEREFOR

A cascaded power electronic transformer and a method for controlling the same are provided. The method includes: calculating electrical angles θi1 and θkps of an sth transformer and a compensation electrical angle θj of a jth transformer; adding the compensation electrical angle θj to the electrical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Zhuang, Jiacai, Xu, Jun, Dong, Yue
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A cascaded power electronic transformer and a method for controlling the same are provided. The method includes: calculating electrical angles θi1 and θkps of an sth transformer and a compensation electrical angle θj of a jth transformer; adding the compensation electrical angle θj to the electrical angle θkps of the jth transformer, to obtain a compensated electrical angle θkps of the jth transformer; and calculating a square wave of a bridge arm voltage of each of the m primary converters and the r secondary converters of the sth transformer based on the electrical angle θi1 and the electrical angle θkps of the sth transformer after compensation.