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Design of Electromagnetic Actuator with Three-Link Mechanism for Air Circuit Breaker  

Kim, Rae-Eun (서울대학교 전기공학부)
Kwak, Sang-Yeop (두산인프라코어 기술원)
Jung, Hyun-Kyo (서울대학교 전기공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.7, 2009 , pp. 1321-1328 More about this Journal
Abstract
In this paper, an electromagnetic force driving actuator (EMFA) and three-link mechanism are proposed as a driving mechanism and connection device for low voltage air circuit breaker (ACB). As the result of dynamic characteristic analysis, the actuator and link mechanism are designed from the simulation and manufactured. The magneitc field of the EMFA is analyzed using the finite element method (FEM). The dynamic characteristic analysis with calculation of the circuit equation and kinetical equation is performed by the time difference method (TDM). Also, the result of the analysis is verified through the experiment of the fabrication model. In this paper, the EMFA size is smaller than the actuator for high voltage circuit breaker. Thus, the dynamic characteristic is analyzed with end-winding inductance that is calculated by the same method which is applied on the circle type end-winding of motors. The designed model for 1600 ampere-frame ACB and the three-link mechanism for connecting contact part with actuating part are manufactured. It is confirmed that the three-link mechanism is possible for improving the circuit breaker efficiency and reducing the size of the EMFA. It is proved that the improved 2-D analysis is more accurate than established method.
Keywords
Electromagnetic actuator; EMFA; Three-link mechanism; Endwinding inductance; ACB; FEM;
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1 E. Dullni, H. Fink, and C. Reuber, 'A Vacuum Circuit-Breaker with Permanent Magnetic Actuator and Electronic Control', in Proc. of The 15th International Conference on Electricity Distribution (CIRED), 1999
2 Jorgen Engstrom, 'Inductance of Slotless Machines', in Proc. of the IEEE Nordic Workshop on Power and Industrial Electronics, NORPIE 2000, pp.266-270, Jun., 2000
3 S.M. Choi, Dynamic Characteristic Analysis and Design of Electromagnetic Force Driving Actuator, M.S. Thesis, School of Electrical Engineering and Computer Science, Seoul National University, Feb., 2008
4 A.R. Bergen, Power Systems Analysis, New Jersey : Prentice-Hall, 2000
5 J,H. Kang, D.K. Shin, H.K. Jung, et al., 'Development and Characteristic Analysis of New type Actuator, Electro Magnetic driven Force Actuator applicable to High Voltage Circuit Breaker', in Proc. of The Fifth International Symposium on Linear Drives for Industry Application, pp.359-362. 2005
6 J.R. Hendershot Jr. and T.J.E. Miller, Design of Brushless Pemanent-Magnet Motors, Oxford Magna Physics Publishing and Clarendo Press, 1994, pp.5-59-5-61
7 E. Dullni, 'A Vacuum Circuit Breaker with Permanent Magnetic Actuator for Frequent Operations', in IEEE 18th International Symposium on Discharges and Electrical Insulation in Vacuum, pp.688-691, 1998   DOI
8 A. Bedford and W.L. Fowler, Engineering Mechanics : Stalics, Upper Saddle River, N.J. : Pearson/Prentice Hall, 2005.Fig. 13. Comparison between experiment and simulation considering end-winding
9 J.H. Kang, H.K. Kim, W.S. Kim and H.K. Jung, 'Development and Analysis of New Type of Switchgear for High Voltage Gas Circuit Breaker : Electromagnetic Force driving Actuator', IEEE Conference on Electromagnetic Field Computation (CEFC) 10576, 2006   DOI