Generalized direct power control for grid connected multilevel converters

Conference paper (2010)

Authors

Sebastian Rivera Universidad Técnica Federico Santa María

Samir Kouro Toronto Metropolitan University

Patricio Cortes Universidad Técnica Federico Santa María

Salvador Alepuz Universitat Politecnica de Catalunya

Mariusz Malinowski Warsaw University of Technology

Bin Wu Toronto Metropolitan University

Jose Rodriguez Universidad Técnica Federico Santa María

Affiliation

External organisation

Grid connection Multilevel converters Direct power control

To reference this document use:

http://resolver.tudelft.nl/uuid:b27817f7-f2d2-442e-a692-2224e8f7858a

More Info

expand_more

Published Date

2010

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

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.