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Title: Asymmetrical DC link voltage balance of a cascaded two level inverter based STATCOM
Authors: BABU, NNVS
Keywords: Multilevel Inverters
Issue Date: 2010
Publisher: IEEE
Citation: TENCON 2010: 2010 IEEE REGION 10 CONFERENCE,483-488
Abstract: Voltage unbalance is one of the main limitation of cascaded based multilevel STATCOM. This paper presents a simple control strategy for the voltage balance of a cascaded two level inverter based STATCOM. The topology consists of two conventional three phase two level inverters connected in cascade. The two inverters operate at two different dc link voltages to obtain four level operation at STATCOM output. Simulation studies are carried out to predict the performance of the proposed control strategy. A laboratory prototype is developed to validate the results. Small signal stability analysis of cascaded inverter is also carried out to predict the system behavior.
ISBN: 978-1-4244-6890-4
ISSN: 0886-1420
Appears in Collections:Proceedings papers

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