Jungwan Choi

SITL-Based Signal Injection Fuzzer for Identifying IMU Sensor Threats in UV

Jungwan Choi, Jeongchan Park, Seunghoon Jeong, Yeojeong Yoon et autres

드론 등과 같은 무인이동체는 크게 비행제어장치, 구동기, 센서로 구성되며, 비행제어장치는 센서값을 기반으로 자세 및 위치 제어를 위한 구동기 출력을 계산하여 구동기를 제어함으로써 안정적이고 효율적으로 비행할 수 있도록 한다. 특히, 자율비행 드론은 다양한 센서로부터 수집된 데이터에 대한 의존도가 높기 때문에 센서의 신뢰성이 드론의 …

A Study on the Risk Identification and Management of Global Supply Chain Risks : Focusing on the Domestic Steel Industries

Jungwan Choi, Kwang-Sup Shin

Recently, as uncertainty and vulnerability in the global supply chain have increased, it is necessary to identify risks and establish countermeasures considering the structure of the global supply chain. In particular, it is important to apply a risk management system and establish …

A Study on Risk Identification and Management of Global Express Service

Kang‐Hyun Lee, Jungwan Choi, Jiyeong Jang, Min‐Ho Ha et autres

The growth of the e-commerce based on the development of ICT technology has grown more explosively due to the aftermath of social distancing caused by the spread of COVID-19. Because of the rapid increase of global express cargo since 2020, Global express …

ITER AC/DC Converter 서브랙의 EN 61000 및 IEC 61010에 의한 EMC/LVD 시험평가

Hyun-Kook Shin, Jong-Seok Oh, Inho Song, Jae-Hak Suh et autres

Sleep and REM evaluation using EEG and EMG with moving window analysis in insomnia animal model

Junbeom Kim, Ji‐Yong Moon, Kwang‐Ho Choi, Suk-Yun Kang et autres

Final design of the Korean AC/DC converters for the ITER coil power supply system

Jong-Seok Oh, Jungwan Choi, Jae-Hak Suh, Jihyun Choi et autres

kr, fr, gb (code pays fourni par la source)

Effect of flash lamp annealing on electrical activation in boron-implanted polycrystalline Si thin films

Woo-Ri Do, Won-Beom Jin, Jungwan Choi, Seung‐Muk Bae et autres

kr (code pays fourni par la source)

PROTECTION SEQUENCE OF AC/DC CONVERTERS FOR ITER PF MAGNET COILS

Byung-Hoon Oh, Churl-Kew Hwang, K.W. Lee, Jeong-Tae Jin et autres

kr, fr (code pays fourni par la source)

Improved current control dynamics at the point of inflection in tokamak coil power supply

Il-Han Choi, Seung-Ho Song, Seung-Gi Jeong, Jong-Seok Oh et autres

Tokamak coil power supply for superconductivity coil of ITER(International Thermonuclear Experimental Reactor) requires fast dynamic performance of di/dt and smooth changeover of current direction. To meet the specification high performance this power supply is designed for 12-pulse thyristor dual converter with interphase …

kr (code pays fourni par la source)

A Three-Phase Interleaved DC–DC Converter With Active Clamp for Fuel Cells

Jungwan Choi, Hanju Cha, Han Byung-Moon

In this paper, a three-phase interleaved dc-dc converter with an active clamp and three-phase pulsewidth modulation (PWM) method are proposed. The proposed converter has a three-phase interleaved boost converter, which consists of three input inductors, three active clamp switches, three-phase high frequency …

kr (code pays fourni par la source)

Sequence control of small-scaled ITER Power Supply for reactive power compensation

Hye-Seong Heo, Kiwon Park, In-Chol Jeong, Hyun-Seok Shin et autres

A technology based on thyristors will be used to manufacture the super-conducting coil AC/DC converters because of the low ratio of cost over installed power compared to a design based on GTO or similar technology. But phase-controlled converter suffers from fundamental disadvantage. …

kr, us (code pays fourni par la source)

A New Bi-directional Three-phase Interleaved Isolated Converter with Active Clamp

Hanju Cha, Jungwan Choi, Woojung Kim, Vladimir Blasko

In this paper, a new bidirectional three-phase dc-dc converter and three-phase PWM strategies have been proposed for battery application. The proposed converter acts as an three-phase isolated buck converter when battery is charged from dc link (buck mode) and an three-phase isolated …

kr (code pays fourni par la source)