Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Tae-Kyung Chung"'
Publikováno v:
IET Electric Power Applications. 13:2027-2034
Recently, power conversion systems (PCSs) have exhibited high efficiencies and miniaturisation, and this trend is expected to grow in the future. An important component of the PCS, which accounts for a significant portion of its volume, is the transf
Publikováno v:
Journal of Electrical Engineering & Technology. 14:645-651
A current transformer (CT) converts the current of the primary side to the proper current level for the secondary side. Hence, the most important performance of the CT is the reliability of the current ratio. However, it is difficult to maintain a re
Publikováno v:
IEEE Transactions on Magnetics. 54:1-4
The characteristics analysis of an electric machine requires the finite-element method. Hence, a large amount of computation occurs in the design process to take into account uncertainties as the manufacturing tolerances. In this paper, an efficient
Publikováno v:
IEEE Transactions on Magnetics. 52:1-4
This paper proposes an improved particle swarm optimization (PSO) process to design a high-performance compact ultrawideband (UWB) filter. The filter consists of one-cell composite right- and left-handed-transmission line (CRLH-TL) resonator, a stepp
Autor:
Myeong-Seob Choi, Yeon-Ho Oh, Hyun-Mo Ahn, Tae-Kyung Chung, Young Il Kim, Heung-Ryeol Kho, Ki-Dong Song, Sung-Chin Hahn
Publikováno v:
Journal of Electrical Engineering and Technology. 10:935-943
Permanent magnetic actuators (P.M.A.s) are widely used to drive medium-voltage-class vacuum circuit breakers (V.C.B.s). In this paper, a method for design optimization of a P.M.A. for V.C.B.s is discussed. An optimal design process employing the resp
Autor:
Geum-Yoon Oh, Byeong-Hyeon Lee, Hong-Seung Kim, Doo Gun Kim, Tae-Kyeong Lee, David McCloskey, Young-Wan Choi, John F. Donegan, Tae-Kyung Chung
Publikováno v:
Optics Communications. 322:188-197
We have investigated the electric-field intensity distributions and characteristics of the whispering-gallery mode (WGM) from a planar microdisk using a three-dimensional finite-difference time-domain method. Silicon nitride (Si 3 N 4 ) planar microd
Autor:
Tae-Kyung Chung, Hyun-Kyo Jung, Dong-Kyun Woo, Dong-Kuk Lim, Dong-Kyu Shin, Il-Woo Kim, Jong-Suk Ro
Publikováno v:
IEEE Transactions on Magnetics. 49:5749-5755
The Thomson coil actuator (TCA) is a useful switch due to its simple structure and rapid completion time. However, research on the TCA is not widely available. Research on the TCA has been focused on the basic working principles and the characteristi
Publikováno v:
IEEE Transactions on Magnetics. 49:5498-5506
Due to the continuous energy consumption in a closing coil for the maintenance of a closed state, the conventional solenoid type MC has serious problems such as inefficient energy consumption, welding in contacts, vibration, and noise. To address the
Publikováno v:
Journal of Electrical Engineering and Technology. 8:1415-1423
The traveling wave ultra-sonic motor (TWUSM) is operated through the frictional force between the rotor and the stator. Hence, the contact mechanism should be analyzed to estimate the motor performance. However, the nonlinearity of the contact mechan
Publikováno v:
IEEE Transactions on Magnetics. 49:2229-2232
The solenoid magnetic actuator has been widely used as an actuator for MS (magnetic switch). Thus, conventional MSs continuously consume electrical power to maintain a closed state. To address this problem, an innovative structure which uses a perman