Browse > Article

Development of Hybrid AVR for Alternator  

Yang, Keun-Ho (한려대학교)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.16, no.4, 2015 , pp. 182-188 More about this Journal
Abstract
An analog AVR has an advantage of short time constant, time to revert again from the abnormal state to a stable one depending on the voltage fluctuations of the load. But the Analog AVR has a disadvantage of large voltage variation according to the load fluctuation. Voltage regulation for digital AVR is very stable, but the time constant is very long compared to that of an analog AVR. Therefore, it indicates that the digital AVR shows unstable output performance in a very large load variations. In this paper, a mixed form of an analog AVR and a digital AVR is proposed. An implemented hybrid AVR has fast time constant and stable voltage regulation capability. Hybrid AVR voltage variations in the load is stable within 1[%] and the voltage stability is also improved. It also showed fast time constant to the level of the analog AVR. Thus hybrid AVR developed in this paper can be used as a power supply for a variety of uses in industry.
Keywords
AVR; Alternator; Exciter Coil; Field Coil; Sensor Coil; Generator;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Andrzej M. Trznhadlowski, Introduction to Modern Power Electronics, Wiley.
2 Kentaro Kawabata, Yuzo Okubo, Nobukazu Iijima, Mototaka Sone, Akinobu Mizutani, "The Automatic Tuning Function for Digital AVR of an Electric Power Generator", Proceedings of the International Conference on Signal Processing Applications & Technology, vol 2, pp. 937-941, Sep. 1998.
3 Dong-Hwan Yu, Sang-Hoon Park, Jae-Sung Yo, Sang-Seuk Lee, Sung-Joon Ahn, "Voltage Control of Synchronous Generator for Ships using a PMG Type Digital Automatic Voltage", KIPE, vol. 14, No. 1, pp. 38-45, 2009.
4 Ibraheem Kasim Ibraheem, "A Digital Optimal AVR Design of Synchronous Generator Exciter Using LQR Technique", Al-Khwarizm Engineering Journal, vol. 7, No. 1, pp. 82-94, 2011.
5 Anderson, P. M. abd Fouad A. A., "Power System Control and Stability", John Wiley and Sons Inc., 2003.
6 Rangnekar S., "Development of state-Space and Study of Performance Characteristics of Digital Based Excitation Control System ST4B with Single Machine Connected to Infinite Bus", IEEE International Conference on Control Applications, Hohala Coast Island of Hawaii, Hawaii, USA, August, 1999.
7 A. Godhwani and M. J. Basler, "Design, Test and Simulation Results of a Var/Power Factor Controller Implemented in a Modern Digital Excitation System", IEEE Power Eng. Society Summer Meeting, SanDiego, CA, 1998.
8 A. Godhwani, M. J. Basler and T. W. Eberly, "Commissioning and Operational Experience with a Modern Digital Excition system", IEEE Trans. Energy Conversion, Vol. 12, June, 1998.
9 Dong-Hee Lee, Tae-Hyoung Kim and Jin-Woo Ahn, "Control of Digital AVR in Stand Alone Generator for Improved Dynamic Characteristics", IEEE pp. 1978-1982, 2008.
10 Asama, M., Ukai, H., Sone, M., Nakamura, K, "Comparative studies of digital AVR for use on engine generator between H/sub/spl infinite control and direct design PID control", Proceedings of the Power Conversion Conference - OSAKA, vol. 1, pp. 211-214, April 2002.