A Comparison of Diode-Clamped and Cascaded Multilevel Converters for a STATCOM With Energy Storage
Ying Cheng
Chang Qian
Crow, M.L.
Pekarek, S.
Atcitty, S.
Dept. of Electr. & Comput. Eng., Missouri Univ., Rolla, MO;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Oct. 2006
Volume: 53,
Issue: 5
On page(s): 1512-1521
ISSN: 0278-0046
INSPEC Accession Number: 9167378
Digital Object Identifier: 10.1109/TIE.2006.882022
Current Version Published: 2006-10-02
Abstract
The progression of distributed generation within a bulk power system will lead to the need for greater control of transmission-line power flows. Static synchronous compensators (STATCOMs) provide a power-electronics-based means of embedded control of transmission-line voltage and power flows. The integration of energy storage with a STATCOM can extend traditional STATCOM capabilities to four-quadrant power flow control and transient stability improvement. This paper discusses energy storage systems (ESSs) integrated with conventional and multilevel bidirectional power converters for a hybrid STATCOM/ESS. Conventional, diode-clamped, and cascaded multilevel converter-based STATCOM/ESSs are developed, and their performances for a variety of power system applications are compared using battery energy storage. The advantages and disadvantages of each topology are presented. Both simulation and experimental results are provided to validate the conclusions
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