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embedded based control of ac automatic voltage regulator

Pricilla Mary S,S C Prasanna

Published in International Journal of Advanced Research in Electrical and Electronics Engineering

ISSN: 2321-4775          Impact Factor:1.6         Volume:1         Issue:2         Year: 08 November,2013         Pages:44-50

International Journal of Advanced Research in Electrical and Electronics Engineering

Abstract

In recent years, the scale of power systems has been expanding, and with that expansion stable power supply and smooth power system operation is becoming increasingly important. One measure for increasing stability is to improve the main circuits by raising the voltage in power transmission lines, which makes use of AVR (automatic voltage regulator), is attracting attention because of its inherent cost advantage. An AVR is configured by an input inductor, an output filter, a small – capacitance dc capacitor, and a four-arm power converter. This four-arm power converter acts as an ac buck converter when the utility voltage is higher than the specified voltage. On the contrary, this four-arm power converter acts as an ac boost converter when the utility voltage is lower than the specified voltage. The capacitance of the dc capacitor in the four – arm power converter is very small. Hence, the size and cost can be reduced, while the reliability and power efficiency can be increased.

Kewords

AVR, Power Converter

Reference

[1] Jinn-ChangWu,Member,IEEE,Hurng- LiahngJou,Member,IEEE,Kuen-Der Wu,and Shiue- Jung Jan, “Three-Arm AC Automatic Voltage Regulator,” IEEE Trans. Industrial Electronics., vol. 58, no. 2, Feb. 2011. [2] M. Brenna, R. Faranda, and E. Tironi, “A new proposal for power quality and custom power improvement: OPEN UPQC,” IEEE Trans. Power Del., vol. 24, no. 4, pp. 2107–2116, Oct. 2009. [3] M. A. P. de Azpeitia, A. Fernandez, D. G. Lamar, M. Rodriguez, and M. M. Hernando, “Simplified voltage- sag filler for line-interactive uninterruptible power supplies,” IEEE Trans. Ind. Electron., vol. 55, no. 8, pp. 3055–3011, Aug. 2008. [4] J. D. Barros and J. F. Silva, “Multilevel optimal predictive dynamic voltage restorer,” IEEE Trans. Ind. Electron., vol. 57, no. 8, pp. 2747–2760, Aug. 2010. [5] Y. W. Li, D. M. Vilathgamuwa, F. Blaabjerg, and P. C. Loh, “A robust control scheme for medium-voltage- level DVR implementation,” IEEE Trans. Ind. Electron., vol. 54, no. 4, pp. 2249–2261, Aug. 2007.