DocumentCode :
2468749
Title :
Generalized direct power control for grid connected multilevel converters
Author :
Rivera, Sebastián ; Kouro, Samir ; Cortés, Patricio ; Alepuz, Salvador ; Malinowski, Mariusz ; Wu, Bin ; Rodríguez, José
Author_Institution :
Dep. of Electron. Eng., Univ. Tec. Federico, Valparaiso, Chile
fYear :
2010
fDate :
14-17 March 2010
Firstpage :
1351
Lastpage :
1358
Abstract :
This paper presents a generalized direct power control (DPC) scheme for grid connected multilevel converters. The proposed method extends the original DPC operating principle by considering only for selection the closest vectors to the present switching state. This approach requires the power derivatives for feedback, which can present numerical implementation problems in real time. Therefore a grid virtual flux based observer is proposed to overcome this issue. The proposed method is applicable to any multilevel converter topology of any number of levels. In this paper simulations results are presented for a 9 level cascaded H-bridge converter. The proposed solution enables DPC for multilevel converters used in medium voltage applications while improving overall power quality and efficiency of the system.
Keywords :
numerical analysis; observers; power control; power convertors; power supply quality; 9 level cascaded H-bridge converter; feedback; generalized direct power control; grid connected multilevel converters; grid virtual flux based observer; multilevel converter topology; power quality; Industrial electronics; Power control; Power conversion; Power engineering and energy; Power quality; Switching converters; Switching frequency; Topology; Voltage control; Wind turbines; Direct power control; grid connection; multilevel converters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Technology (ICIT), 2010 IEEE International Conference on
Conference_Location :
Vi a del Mar
Print_ISBN :
978-1-4244-5695-6
Electronic_ISBN :
978-1-4244-5696-3
Type :
conf
DOI :
10.1109/ICIT.2010.5472518
Filename :
5472518
Link To Document :
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