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Implementation of Voltage Sag/Swell Compensator using Direct Power Conversion  

Lee, Sang-Hoey (충남대 전기공학과)
Cha, Han-Ju (충남대 전기공학과)
Han, Byung-Moon (명지대 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.8, 2009 , pp. 1544-1550 More about this Journal
Abstract
In this paper, a new single phase voltage sag/swell compensator using direct power conversion is proposed. A new compensator consists of input/output filter, series transformer and direct ac-ac converter, which is a single-phase back-to-back PWM converter without dc-link capacitors. Advantages of the proposed compensator include: simple power circuit by eliminating dc link electrolytic capacitors and thereby, improved reliability and increased life time of the entire compensator; simple PWM strategy or compensating voltage sag/swell at the same time and reduced switching losses in the ac-ac converter. Further, the proposed scheme is able to adopt simple switch commutation method without requiring complex four-step commutation method that is commonly employed in the direct power conversion. Simulation and experimental results are shown to demonstrate the advantages of the new compensator and PWM strategy. A 220V, 3kVA single-phase compensator based on the digital signal processor controller is built and tested.
Keywords
Sag/Swell Compensator; Direct Ac-Ac Converter; Single-Phase Compensator PWM Strategy; Digital Phase Locked Loop; Direct Power Conversion;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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1 A. Kara, P. Dahler, D. Amhof, and H. Gruning, 'Power supply quality improvement with a dynamic voltage restorer (DVR),' in Proc. IEEE APEC'98, vol. 2, 1998, pp. 986-993
2 E. C. Aeloiza, P. N. Enjeti, L. A. Moran, O. C. Montero-Hernandez, and S. Kim, 'Analysis and design of a new voltage sag compensator for critical loads in electrical power distribution systems,' IEEE Trans. Ind. Applications, vol. 39, July/Aug. 2003, pp. 1143-1150   DOI   ScienceOn
3 C. Klumpner and F. Blaabjerg, 'Modulation method for a mUltiple drive system based on a two-stage direct power conversion topology with reduced input current ripple,' IEEE Trans. on Power Elec., vol.20, july, 2005, pp. 922-9   DOI   ScienceOn
4 H. Cha, S. Lee, 'Design and Implementation of Photovoltaic Power Conditioning System Using a Current Based Maximum Power Point Tracking', in Proc. IEEE-IAS Annual Meeting, October. 2008, pp.1-5
5 D. Sabin, 'An assessment of distribution system power quality,' Elect. Power Res. Inst. Palo Alto, CA EPRI Final Rep. TR-106294-V2, vol. 2, Statistical summary report, May 1996
6 N. H. Woodley, L. Morgan, and A. Sundaram, 'Experience with an inverter-based dynamic voltage restorer,' IEEE Trans. Power Delivery, vol. 14, pp. 1181-1186   DOI   ScienceOn
7 차한주, 부우층기엔, '단상계통연계 태양광 인버터용 L-C-L 필터 설계 및 분석', 대한전기학회전기기기 및 에너지변환시스템 부문회 춘계학술대회, 2009, pp. 228-230
8 M. H. J. Bollen, 'Understanding power quality problems - voltage sags and interruption,' ISBN 0-7803-4713-7, IEEE Press, 2000
9 J. L. Duran-Gomez, P. N. Enjeti, and A. von Jouanne, 'An approach to achieve ride-through of an adjustable speed drive with fly-back converter modules powered by super capacitors,' in Conf. Rec. IEEE-IAS Annual Meeting, vol. 3, 1999, pp. 1623-1629
10 A. Sundaram, 'Distribution System Power Quality Assessment: Phase II Voltage Sag and Interruption Analysis' Technical Report 1001678 in EPRI, march, 2003
11 K. Lee, H Koizumi, K. Kurokaea, 'Voltage control of D-UPFC between a clustered PV system and Distribution system', in Proc. IEEE PESC'06, june 2006, p 1-5
12 J. L. Duran-Gomez, P. N. Enjeti, and B. O. Woo, 'Effect of voltage saga on adjustable speed drives - A critical valuation and an approach to improve its performance,' IEEE Trans. Ind. Applications, vol. 35, Nov./Dec. 1999, pp. 1440-1449   DOI   ScienceOn
13 S. Kim, S. K. Sul and T. A. Lipo, 'AC/AC power conversion based on matrix converter topology with unidirectional switches,' IEEE Trans. Ind. Applications, Vol. 36, No.1, 2000, pp. 139-145   DOI   ScienceOn