Page 206 - Power Quality in Electrical Systems

188 Chapter Twelve

R LOAD

R AC
S C motor
T
L

Figure 12.20 An ASD with an active front-end rectifier to support a DC-bus voltage
during a line-voltage sag [12.7].

Summary
Induction motors alone (and in ASDs) represent a large part of the
three-phase electrical load in commercial and industrial facilities. They
are affected by line voltage sags and interruptions. Protective methods
are available to maintain operation during voltage sag and to restart
after voltage interruptions.

References
[12.1] A. E. Fitzgerald, C. Kingsley, and A. Kusko, Electric Machinery, 3rd edition,
McGraw-Hill, New York, 1975.
[12.2] J. C. Gomez, M. M. Morcos, C. A. Reineri, and G. N. Campetelli, “Behavior of
Induction Motor Due to Voltage Sags and Short Interruptions,” IEEE Trans. on
Power Delivery, vol. 17, no. 2, April 2002, pp. 434–440.
[12.3] M. Baran, J. Cavaroc, A. Kelley, S. Peel, and Z. Kellum, “Stresses on Induction Motors
Due to Momentary Service Interruptions,” 2006 IEEE Industrial and Commercial
Power Systems Technical Conference, April 30–May 5, 2006, Detroit, MI.
[12.4] “NEMA Standard Publication No. MG 1-1998,” Art 20.12, Number of Starts.
[12.5] A. Kusko and J. Y. Ayoub, “New Concepts in Large AC Motor Protection,” EC&M,
March 2006, pp. 22–24.
[12.6] J. W. Gray and F. J. Haydock, “Industrial Power Quality Consideration When
Installing Adjustable Speed Drive Systems,” IEEE Trans. on Industry
Applications, vol. 32, no. 3, May/June 1996, pp. 95–101.
[12.7] K. Stockman, M. Didden, F. D. Hulster, and R. Belmans, “Bag the Sags, Embedded
Solutions to Protect Textile Processes Against Voltage Sags,” IEEE Industry
Applications Magazine, September/October 2004, pp. 59–65.
[12.8] J. L. Duran-Gomez, P. N. Enjeti, and B. Okwoo, “Effect of Voltage Sags on
Adjustable-Speed Drives: A Critical Evaluation and an Approach to Improve
Performances,” IEEE Trans on Industry Application, vol. 35, no. 6, November/
December 1999, pp. 1440–1449.
[12.9] S. Z. Djokic, K. Stockman, J. V. Milanovic, J. J. M. Desmet, R. Belmans, “Sensitivity
of AC Adjustable Speed Drives to Voltage Sags and Short Interruptions,” IEEE
Trans. on Power Delivery, vol. 20, no. 1, January 2005, pp. 494–505.
[12.10] K. Lee, G. Venkataramanan, and T. M. Jahns, “Design-Oriented Analysis of DC
Bus Dynamics in Adjustable Speed Drives Under Input Voltage Unbalance and Sag
Conditions,” 2004 35th Annual IEEE Power Electronics Specialist Conference,
[12.11] AF-300G11 Users Guide, GE Fuji Drives USA, 2000.