Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2015.10.1.388
Title & Authors
A Novel Hybrid Sequential Start Control System for Large Inductive Loads Kim, Sang-Kon; Kim, Tae-Kon;
The inrush current of a large inductive load can be reduced with a soft starter; however, the large inrush current caused by simultaneous bulk starts (SBSs) cannot be effectively reduced. In order to reduce the high inrush current and voltage sag owing to the SBSs of large capacity inductive loads within a power network, a novel hybrid sequential start control system is proposed, implemented on embedded systems, and evaluated with a testbed in this study. From the experimental and simulation results of the proposed control system, the inrush current could be effectively restricted below the maximum current capacity of a power distributing board. Moreover, with the proposed system, power cost typically dictated by the peak power consumption can be fairly reduced, and the quality of the power system connected to the inductive loads can be efficiently increased.
R. Naidoo and P. Pillay, “A New Method of Voltage Sag and Swell Detection,” IEEE Trans. Power Del., vol. 22, no. 2, pp. 1056-1063, Apr. 2007.
B. Alboyaci and N. Yörükeren, “The Evaluation of Medium Voltage Motor’s Current and Voltage Harmonics during Loading,” J. Electr. Eng. Technol., vol. 2, no. 1, pp. 35-41, 2007.
S. Lee and H. Cha, “Novel Fast Peak Detector for Single- or Three-phase Unsymmetrical Voltage Sags,” J. Electr. Eng. Technol., vol. 6, no. 5, pp. 658-665, 2011.
H. Rehaoulia and M. Polouiadoff, “Transient Behavior of the Resultant Airgap Field during Run-up of an Induction Motor,” IEEE Trans. Energy Convers., vol. EC-1, pp. 92-98, Dec. 1986.
A. H. Bonnett and G. C. Soukup, “Cause and Analysis of Stator and Rotor Failures in Three-Phase Squirrel-Cage Induction Motors,” IEEE Trans. Ind. Appl., vol. 28, no. 4, pp. 921-937, Jul./Aug. 1992.
International Electrotechnical Commission, Electromagnetic compatibility – Part 3-3: Limits – Limitation of voltage changes, voltage fluctuation, and flicker in public low-voltage supply systems, for equipment with raged current ≤ 16A, IEC 61000-3-3, 1994.
G. Zenginobuz, I. Cadirci, M. Ermis, and C. Barlak, “Soft Starting of Large Induction Motors at Constant Current with Minimized Starting Torque Pulsations,” IEEE Trans. Ind. Appl., vol. 37, no. 5, pp. 1334-1347, Sept./Oct. 2001.
G. Zenginobuz, I. Cadirci, M. Ermis, and C. Barlak, “Performance Optimization of Induction Motors during Voltage-Controlled Soft Starting,” IEEE Trans. Energy Convers., vol. 19, no. 2, pp. 278-288, Jun. 2004.
A. Gastli and M. M. Ahmed, “ANN-Based Soft Starting of Voltage-Controlled-Fed IM Drive System,” IEEE Trans. Energy Convers., vol. 20, no. 3, pp. 497-503, Sept. 2005.
K. Sundareswaran and B. M. Jos, “Development and Analysis of Novel Soft-Starter/Energy-Saver Topology for Delta-Connected Induction Motors,” Proc. Inst. Electr. Eng. Electr. Power Appl., vol. 152, no. 4, pp. 922-932, Jul. 2005.
M. G. Solveson, B. Mirafzal, and N. A. O. Demerdash, “Soft-Started Induction Motor Modeling and Heating Issues for Different Starting Profiles Using a Flux Linkage ABC Frame of Reference,” IEEE Trans. Ind. Appl., vol. 42, no. 4, pp. 973-982, Jul./Aug. 2006.
S. Kim, I. Choi, T. Kim, and S. Seo, “A Control System for Attenuating Voltage-Dip and Inrush Current Caused by Starting of Inductive Load Network,” J. Inst. Korean Electr. Electr. Eng., vol. 16, no. 2, pp. 109-115, Jun. 2012.