Kyungsoo Lee
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View article: Integrated Assessment Framework for Rice Yield and Energy Yield in Bifacial Agrivoltaic Systems
Integrated Assessment Framework for Rice Yield and Energy Yield in Bifacial Agrivoltaic Systems Open
Agrivoltaic (APV) systems co-locate agricultural production and photovoltaic (PV) electricity generation on the same land to maximize land use efficiency. This study proposes an integrated assessment framework that jointly evaluates crop y…
View article: An Arctic sea ice concentration data record on a 6.25 km polar stereographic grid from 3 years of Landsat-8 imagery
An Arctic sea ice concentration data record on a 6.25 km polar stereographic grid from 3 years of Landsat-8 imagery Open
The decline in Arctic sea ice in the global warming era has received much attention as a contributing factor to the changes in the weather and climate in the Arctic and beyond. The coverage of Arctic sea ice (i.e. sea ice concentration (SI…
View article: An Arctic sea ice concentration data record on a 6.25 km polar stereographic grid from three-years’ Landsat-8 imagery
An Arctic sea ice concentration data record on a 6.25 km polar stereographic grid from three-years’ Landsat-8 imagery Open
The decline of Arctic sea ice in the global warming era has received much attention as a contributing factor to the changes in the weather/climate in the Arctic and beyond. The coverage of Arctic sea ice (i.e., sea ice concentration (SIC))…
View article: Multiparallel Inverter Control Strategy for Grid-Supporting P2G Systems
Multiparallel Inverter Control Strategy for Grid-Supporting P2G Systems Open
This article introduces a novel control approach to obtain higher grid reliability using power-to-gas (P2G) conversion systems. The proposed control method named multiparallel vector current control is a variant of virtual synchronous mach…
View article: Optimal Grid Supporting Power-to-Gas (GS-P2G) Concept for Grid Voltage and Frequency Regulation
Optimal Grid Supporting Power-to-Gas (GS-P2G) Concept for Grid Voltage and Frequency Regulation Open
This paper presents an optimal grid-supporting power-to-gas (GS-P2G) control scheme that coordinates the operation of a grid-forming inverter (GFMI), battery energy storage (BES), and hydrogen energy storage (HES) in a power-to-gas (P2G) s…
View article: Agrophotovoltaic Designs : Irradiation Analysis on and under PV Modules
Agrophotovoltaic Designs : Irradiation Analysis on and under PV Modules Open
To secure agricultural benefits and PV power generation from an agrophotovoltaic system, it is vital that the PV modules and the crop are both irradiated by light. The configuration and design of PV modules have a practical effect on the i…
View article: Performance Analysis of Bifacial PV Modules with Transparent Mesh Backsheet
Performance Analysis of Bifacial PV Modules with Transparent Mesh Backsheet Open
Due to their transparent rear side, bifacial modules can take advantage of rear side irradiance as opposed to monofacial modules. Glass or transparent backsheets are conventionally used as rear side encapsulation material. To increase coup…
View article: Performance Analysis of Photovoltaic System using Proposed Assessment Method: An Inquiry on Output Energy Analysis Depending on Distance
Performance Analysis of Photovoltaic System using Proposed Assessment Method: An Inquiry on Output Energy Analysis Depending on Distance Open
The losses in grid-connected photovoltaic (PV) power generation systems were calculated using the monitoring data that were collected in 2018-2019 from the path between the input and output energy. Thus, the various loss factors were ident…
View article: Optimization of PCB SI Coupon Design That Minimizes Discontinuity Through via-in-Pad Plated over (VIPPO) Technique
Optimization of PCB SI Coupon Design That Minimizes Discontinuity Through via-in-Pad Plated over (VIPPO) Technique Open
The importance of signal integrity is emphasized as signal speed increases, and higher frequencies are applied. The Print Circuit Board (PCB) manufacturer uses signal integrity coupons that can replace the in-product circuit to measure and…
View article: Practical Performance Analysis of a Bifacial PV Module and System
Practical Performance Analysis of a Bifacial PV Module and System Open
Bifacial photovoltaic (PV) modules can take advantage of rear-surface irradiance, enabling them to produce more energy compared with monofacial PV modules. However, the performance of bifacial PV modules depends on the irradiance at the re…
View article: A Study on the Effect of Particulate Matter Concentration on the Reliability of Decomposition Model
A Study on the Effect of Particulate Matter Concentration on the Reliability of Decomposition Model Open
Recently, as the amount of particulate matter blowing from China increases, the domestic air environment is rapidly deteriorating. This pollution of the atmosphere greatly affects the light energy reaching the ground. Particularly, since t…
View article: A Study on the Installation Potential of Photovoltaic System Based on Regional Architectural Data
A Study on the Installation Potential of Photovoltaic System Based on Regional Architectural Data Open
As the solar energy market grows, the need to investigate the potential of photovoltaic system is being highlighted. However, due to the lack of plain field, the system on top of buildings is being exploited. This paper analyzes the potent…
View article: A Preliminary Research of the Bifacial PV System Under Installation Conditions
A Preliminary Research of the Bifacial PV System Under Installation Conditions Open
Nowadays the bifacial PV system market and its applications are increasing rapidly. The performance of the bifacial PV system take advantage of its rear surface irradiance. Also, the ground albedo, PV module tilt and azimuth, PV module ins…
View article: Statistics of Two-point Correlation and Network Topology for Lyman Alpha Emitters at <i>z</i> ≈ 2.67
Statistics of Two-point Correlation and Network Topology for Lyman Alpha Emitters at <i>z</i> ≈ 2.67 Open
We investigate the spatial distribution of Lyman alpha emitting galaxies\n(LAEs) at $z \\approx 2.67$, selected from the NOAO Deep Wide-Field Survey\n(NDWFS), using two-point statistics and topological diagnostics adopted from\nnetwork sci…
View article: Photovoltaic System Energy Performance Analysis Using Meteorological Monitoring Data
Photovoltaic System Energy Performance Analysis Using Meteorological Monitoring Data Open
Nowadays, domestic photovoltaic system market has been expanded and the governmental dissemination policy has been continued. There is only PV system output performance analysis which is called Performance Ratio(PR) analysis. However, ther…
View article: D-UPFC Application as the Series Power Device in the Massive Roof-top PVs and Domestic Loads
D-UPFC Application as the Series Power Device in the Massive Roof-top PVs and Domestic Loads Open
This paper shows the series power device in the massive roof-top PVs and domestic loads. D-UPFC as the series power device controls the distribution voltage during voltage rise (or fall) condition. D-UPFC consists of the bi-directional ac-…