Search Results - "Sangwook Han"

Calculating the Interface Flow Limits for the Expanded Use of High-Voltage Direct Current in Power Systems by Han, Sangwook

“…Although loads are increasingly becoming concentrated in metropolitan areas, power generation has decreased in metropolitan areas and increased in…”
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Selecting an Effective ESS Installation Location From the Perspective of Reactive Power by Han, Sangwook

“…When an entire power system blacks out, the system operator uses a self-starting generator to initiate the recovery procedure that starts the priority…”
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Three-Phase-Measurement-Based Load Modeling Technique Using Unbalanced Fault Data by Han, Sangwook

“…This study presents a load modeling technique using unsymmetrical fault data. Typically, three-phase balanced fault data are prerequisite for load modeling;…”
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A novel approach to battery cell balancing using near‐field wireless power transfer by Jeon, Juhyeon, Seo, Sangsoo, Han, Sangwook, Lee, Dongho

“…This paper presents a novel battery cell balancing technique using near‐field wireless power transfer (WPT). The proposed method aims to overcome the drawbacks…”
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Speech Emotion Recognition Incorporating Relative Difficulty and Labeling Reliability by Ahn, Youngdo, Han, Sangwook, Lee, Seonggyu, Shin, Jong Won

“…Emotions in speech are expressed in various ways, and the speech emotion recognition (SER) model may perform poorly on unseen corpora that contain different…”
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Development of Bus and Line Control Method for Short-Circuit Current Reduction Using Genetic Programming by Son, Dabin, Han, Sangwook

“…In this study, genetic programming (GP) is used for optimizing bus and line separation methods to reduce the short-circuit current. Expanding power systems led…”
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Effect of air–fuel mixing quality on characteristics of conventional and low temperature diesel combustion by Han, Sangwook, Kim, Jaeheun, Bae, Choongsik

“…•Effect of air–fuel mixing quality on conventional and low temperature diesel combustion was investigated.•Higher injection pressure and intake pressure…”
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Multifunctional Interface for High-Rate and Long-Durable Garnet-Type Solid Electrolyte in Lithium Metal Batteries by Lee, Kyeongsu, Han, Sangwook, Lee, Jeongmin, Lee, Sunyoung, Kim, Jongmin, Ko, Youngmin, Kim, Sewon, Yoon, Kyungho, Song, Jun-Hyuk, Noh, Joo Hyeon, Kang, Kisuk

“…Lithium dendrite growth in solid electrolytes is one of the major obstacles to the commercialization of solid-state batteries based on garnet-type solid…”
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Unveiling crystal orientation-dependent interface property in composite cathodes for solid-state batteries by in situ microscopic probe by Lee, Sunyoung, Park, Hayoung, Kim, Jae Young, Kim, Jihoon, Choi, Min-Ju, Han, Sangwook, Kim, Sewon, Kim, Wonju, Jang, Ho Won, Park, Jungwon, Kang, Kisuk

“…A critical bottleneck toward all-solid-state batteries lies in how the solid(electrode)-solid(electrolyte) interface is fabricated and maintained over repeated…”
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A study on alternative methods of energy hub self-starting generators by Lee, Joonghoon, Kim, Gimin, Han, Sangwook

“…Power sources of different forms and capacities are being connected to the grid owing to the rapid increase in the use of renewable energy sources. Korea Gas…”
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A study on the effect of the stability of the electric power system on the internal and external contingency of the combined energy hub by Son, Dabin, Kim, Sungryeol, Han, Sangwook, Lee, Dongho

“…In this study, the combined energy hub on the gas pressure converter station in South Korea was configured in a detailed model form rather than a conventional…”
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A 14-nm 0.14-psrms Fractional-N Digital PLL With a 0.2-ps Resolution ADC-Assisted Coarse/Fine-Conversion Chopping TDC and TDC Nonlinearity Calibration by Chih-Wei Yao, Ronghua Ni, Chung Lau, Wanghua Wu, Godbole, Kunal, Yongrong Zuo, Sangsoo Ko, Nam-Seog Kim, Sangwook Han, Ikkyun Jo, Joonhee Lee, Juyoung Han, Daehyeon Kwon, Chulho Kim, Shinwoong Kim, Sang Won Son, Cho, Thomas Byunghak

“…A digital fractional-N phase-locked loop (PLL) is presented. It achieves 137and 142-fs rms jitter integrating from 10 kHz to 10 MHz and from 1 kHz to 10 MHz,…”
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Vegetation Spatial Distribution on Taean Duung Wetland Protect Area by Shin, Haeseon, Lee, Sanghun, Han, Sangwook

“…In this study, we conduct for providing information on the status of vegetation space distribution in the Duung wetland protected area and to help manage the…”
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Decoherence of nitrogen-vacancy spin ensembles in a nitrogen electron-nuclear spin bath in diamond by Park, Huijin, Lee, Junghyun, Han, Sangwook, Oh, Sangwon, Seo, Hosung

“…Nitrogen-vacancy (NV) centers in diamond have been developed into essential hardware units for a wide range of solid-state-based quantum technology…”
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Novel cell balancing applied near-field coupling and Serial–Parallel Circuit configuration by Lee, Dongho, Jeon, Juhyeon, Han, Sangwook

“…This paper proposes a near-field cell balancing method to be applied to batteries of higher capacity and power. This method involves a wireless power transfer…”
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Optimizing the Location of Frequency Regulation Energy Storage Systems for Improved Frequency Stability by Lee, Jonghoon, Han, Sangwook, Lee, Dongho

“…The installation of battery energy storage systems (BESSs) with various shapes and capacities is increasing due to the continuously rising demand for renewable…”
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Long-term reliable physical health monitoring by sweat pore-inspired perforated electronic skins by Yeon, Hanwool, Lee, Haneol, Kim, Yeongin, Lee, Doyoon, Lee, Youngjoo, Lee, Jong-Sung, Shin, Jiho, Choi, Chanyeol, Kang, Ji-Hoon, Suh, Jun Min, Kim, Hyunseok, Kum, Hyun S, Lee, Jaeyong, Kim, Daeyeon, Ko, Kyul, Ma, Boo Soo, Lin, Peng, Han, Sangwook, Kim, Sungkyu, Bae, Sang-Hoon, Kim, Taek-Soo, Park, Min-Chul, Joo, Young-Chang, Kim, Eunjoo, Han, Jiyeon, Kim, Jeehwan

“…Electronic skins (e-skins)-electronic sensors mechanically compliant to human skin-have long been developed as an ideal electronic platform for noninvasive…”
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Real-Time Voltage Stability Assessment Method for the Korean Power System Based on Estimation of Thévenin Equivalent Impedance by Lee, Yunhwan, Han, Sangwook

“…This study aims to develop a real-time assessing methodology for a power systems voltage stability. The proposed algorithm is based on the Thévenin equivalent…”
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Monitoring, collecting, and validating data of inland wetland survey based on citizen science methodology by Inae Yeo, Kwangjin Cho, Yeonsu Chu, Pyoungbeom Kim, Sangwook Han

“…Background: In this study, citizen scientists gathered survey data by monitoring inland wetlands, recognized as carbon sinks, and verified the accuracy of the…”
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Prediction of In-Hospital Cardiac Arrest Using Shallow and Deep Learning by Chae, Minsu, Han, Sangwook, Gil, Hyowook, Cho, Namjun, Lee, Hwamin

“…Sudden cardiac arrest can leave serious brain damage or lead to death, so it is very important to predict before a cardiac arrest occurs. However, early…”
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