Browse > Article
http://dx.doi.org/10.6113/TKPE.2013.18.4.322

Single-Phase Series Type Quasi Z-Source Voltage Sag-Swell Compensator for Voltage Compensation of Entire Region  

Eom, Jun-Hyun (Dept. of Electrical Engineering, Chonnam Nat'l Univ.)
Jung, Young-Gook (Dept. of Electrical Engineering, Daebul University)
Lim, Young-Cheol (Dept. of Electrical Engineering, Chonnam Nat'l Univ.)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.18, no.4, 2013 , pp. 322-332 More about this Journal
Abstract
Conventional single-phase series quasi Z-source voltage compensator can not compensate for voltage sag less than 50% that frequently occurs in the industrial field. In this study, single-phase series quasi Z-source voltage sag-swell compensator which can compensate the voltage variation of entire range is proposed. The proposed system is composed of two quasi Z-source AC-AC converters connected in series with output terminal stage. Voltage sag less than 50% could be compensated by the intersection switching control of the upper converter duty ratio and of the upper converter duty ratio. Also the compensation voltage and its flowchart for each compensation mode are presented for entire sag-swell region. To confirm the validity of the proposed system, a DSP(DSP28335) controlled experimental system was manufactured. As a result, the proposed system could compensate for the voltage sag/swell of 20% and 60%. Finally, voltage compensation factor and THD(Total Harmonic Distortion) according to voltage variation and load change were measured, and voltage quality shows a good results.
Keywords
voltage sag/swell compensation; entire compensation region; quasi Z-source AC-AC converter; series connection of output terminal; intersection switching control; voltage compensation factor; THD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 G. T. Heydt, "Power quality engineering," IEEE Power Eng. Rev., pp. 5-7, Sep. 2001.
2 R. Dugan, M. Mc Grannaghan, S. Santoso, and H. Beaty, Electrical Power systems Quality. New York: McGraw-Hill, 2002.
3 M. McGranaghan, "Overview of Power Quality Standards," PQ Network Internet Site, http://www.pqnet.electrotek.com/pqnet.
4 Power Quality Tutorial, "PQ103-Equipment Sensitivity Basics," Power Quality Assurance Internet Site, http://www.powerquality.com/pqpark.
5 Mark F. McGranaghan et al, "Voltage Sags in Industrial Systems," IEEE Trans. Ind. Applicat., Vol. 29, No. 2, pp. 397-403, 1993.   DOI   ScienceOn
6 Y.W. Li, P.C. Loh, F. Blaabjerg, and D. M. Vilathgamuwa, "Investigation and Improvement of Transient Response of DVR at Medium Voltage Level," IEEE Trans. Ind. Applicat., Vol. 43, No. 5, pp. 1309-1319, 2007.   DOI   ScienceOn
7 M. Vilathgamuwa, A. A. D. R. Perera, S. S. Choi, and K. J. Tseng, "Control of Energy Optimized Dynamic Voltage Restorer," in Proc. IEEE IECON'99, pp. 873-878, 1999.
8 T. Jimichi, H. Fujita, and H. Akagi, "Design and Experimentation on a Dynamic Voltage Restorer Capable of Significantly Reducing an Energy- Storage Element," in Proc. IEEE IAS'05, pp. 896-903, 2005.
9 D. M. Vilathgamuwa, C. J. Gajanayake, P. C. Loh, and Y. W. Li, "Voltage Sag Compensation with Z-Source Inverter Based Dynamic Voltage Restorer," in Proc. IEEE IAS'06, pp. 2242-2248, 2006.
10 Y. G. Jung, "Three-Phase Z-Source Dynamic Voltage Restorer with a Fuel Source," Journal of KIIEE, Vol. 22, No. 10, pp. 41-48, 2008.   과학기술학회마을   DOI   ScienceOn
11 M. K. Nguyen, Y. G. Jung, and Y. C. Lim, "Single-Phase Z-Source Voltage Sag/Swell Compensator," in Proc. IEEE ISIE'09, pp. 24-28, 2009.
12 K. T. Lee, Y. G. Jung, and Y. C. Lim, "A Single-Phase Quasi Z-Source Dynamic Voltage Restorer(DVR)," Journal of KIPE, Vol. 15, No. 4, pp. 327-334, 2010.
13 Math H.J. Bollen, "Understanding Power Quality Problems-Voltage Sags and Interruptions," IEEE Press, 2000.