Jae-Moon Kim

Korea National University of Transportation

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Co-Authors

Yong‐Ho Yoon

Gwangju University

Chung-Yuen Won

Sungkyunkwan University

Jeong Won Kang

Korea National University of Transportation

Sung-Ho Chang

Korea Electric Power Corporation (South Korea)

Tae-Sung Jeong

Pusan National University

Yong Seob Park

Chosun College of Science & Technology

Chin-Young Chang

Korea National University of Transportation

Ki-Sub Kim

Korea National University of Transportation

Chul-Su Kim

Ulsan National Institute of Science and Technology

Lim Jungmook

Cooperative Institutions

Seoul National University

Korea National University of Transportation

Sungkyunkwan University

Samsung (South Korea)

Korea Advanced Institute of Science and Technology

Chungnam National University

Korea Electrotechnology Research Institute

Pohang University of Science and Technology

Korea University

Kyung Hee University

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Characteristics of W Doped Nanocrystalline Carbon Films Prepared by Unbalanced Magnetron Sputtering

Journal of Nanoscience and Nanotechnology (2016)

Yong Seob Park Chul Min Park Nam–Hoon Kim Jae-Moon Kim

Nanocrystalline tungsten doped carbon (WC) films were prepared by unbalanced magnetron sputtering. Tungsten was used as the doping material in carbon thin films with the aim of application as a contact strip in an electric railway. The structural, physical, and electrical properties of the fabricated WC films with various DC bias voltages were investigated. The films had a uniform and smooth surface. Hardness and frication characteristics of the films were improved, and the resistivity and sheet resistance decreased with increasing negative DC bias voltage. These results are associated with the nanocrystalline WC phase and sp(2) clusters in carbon networks increased by ion bombardment enhanced with increasing DC bias voltage. Consequently, the increase of sp(2) clusters containing WC nanocrystalline in the carbon films is attributed to the improvement in the physical and electrical properties.

Nanocrystalline material

Cavity magnetron

Carbon fibers

Biasing

10.1166/jnn.2016.12183

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Citations (1)

The Characteristic of Control Response of BLDC using a Fuzzy PI Controller

The Transactions of The Korean Institute of Electrical Engineers (2011)

Yong‐Ho Yoon Jae-Moon Kim Duk-Heon Kim Chung-Yuen Won

BLDC motor is used in a wide variety of industrial and servo applications. Its features and advantages mainly consist in high value of torque/inertia ratio, high efficiency with speed range and high dynamic performance.BR This paper deals with the speed control of a trapezoidal type brushless DC motor using Fuzzy PI controller. The conventional PI controller has been widely used in industrial applications. If we select a optimal PI control gain, the PI controller shows very good control performance. But it is very difficult to find the optimal PI control gain. Fuzzy control does not need any model of plant and is basically adaptive and gives robust performance for plant parameter variation. Therefore the combinations of conventional PI controller and fuzzy controller seem to be very effective. This paper deals with PI controller with 4-rule based fuzzy controller. The proposed fuzzy PI controller increases the control performance of the conventional PI controller. Simulation and experimental results show that fuzzy PI controller has a good robustness regarding the improper tuned PI controller.

Robustness

Open-loop controller

Electronic speed control

10.5370/kiee.2011.60.10.1978

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Risk Assessment of Hydrogen Product Inspection and Testing Facility Using EFFECTS & RISKCURVES

Journal of Hydrogen and New Energy (2024)

Jae-Moon Kim Yang-Kyun Kim Seungho Jung

10.7316/jhne.2024.35.6.751

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New approach to SRM drive with six-switch converter

Mechatronics (2009)

Yong‐Ho Yoon Jae-Moon Kim Chung-Yuen Won Byoung‐Kuk Lee

Motor drive

10.1016/j.mechatronics.2009.08.006

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Citations (10)

Precision control of a sensorless PM BLDC motor using PLL control algorithm

Electrical Engineering (2017)

Yong‐Ho Yoon Jae-Moon Kim

Torque ripple

Hall effect sensor

Harmonic

Commutation

Machine control

10.1007/s00202-017-0571-x

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Citations (11)

Aging Analysis of Catenary Wires in Accordance with Temperature Changes for a Long Period of Time

The Transactions of The Korean Institute of Electrical Engineers (2016)

Nam-Hee Cho Wan-Shik Oh Jae-Moon Kim

In this paper, catenary wires were analyzed aging through the experiment about a new product and a test sample in accordance with temperature changes from long-term use.BR In case of the contact wire, the maximum load was reduced within 7% and the tensile strength showed a reduced within 6.7% compared with a new reference standard 110㎣. 19 Strands of messenger wire have a little more than a standard value, but result data on tensile test were less than the reference value about stranded wire. Also parts among 49 strands of dropper was found to be smaller than the reference value and it appeared greatly increasing intensity as toward the center of the strand.

Catenary

Tensile testing

10.5370/kiee.2016.65.9.1590

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Power Factor Correction of Switched Reluctance Motor Drive System using Boost Converter

The Transactions of the Korean Institute of Power Electronics (2005)

Yong-Ho Yoon Jae-Moon Kim Tae‐Won Lee Hack-Seong Kim Won Chung-Yuen

Switched Reluctance Motor(SRM) offers the advantages of simple and robust motor construction, high speed and high efficiency over a wide operating range of torque and speed, excellent controllability. However SRM has the disadvantages of high current harmonics, and low power factor because the required output of speed and torque is produced by the discontinuous and loss of power system, and brings about the incorrect operation of electronic system. This paper deals with an energy efficient converter fed SRM system with the reduced harmonics and improved power factor. The validity of the proposed scheme is verified via experiments. We are implemented the proposed control system using 80C196KC micro-controller.

Reluctance motor

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Current Status And Countermeasures For Korean Nuclear Power Plants

Jae-Moon Kim Lim Jungmook Kwon Heonwoo

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Application of Social Spider Algorithm to Optimize Train Energy

Journal of Electrical Engineering and Technology (2019)

Hung-Kang Sung No-Geon Jung Sy‐Ruen Huang Jae-Moon Kim