Woojin Choi
Woojin Choi
Professor of Power Electronics School of Electrical/Electronic Engineering, Soongsil Univ. Seoul, South Korea.
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Development of an equivalent circuit model of a fuel cell to evaluate the effects of inverter ripple current
W Choi, PN Enjeti, JW Howze
Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition …, 2004
Performance Improvement of LCL-Filter-Based Grid-Connected Inverters Using PQR Power Transformation
HG Jeong, KB Lee, S Choi, W Choi
IEEE Transactions on Power Electronics 25 (5), 1320-1330, 2009
Design of a high-efficiency wireless power transfer system with intermediate coils for the on-board chargers of electric vehicles
DH Tran, W Choi
IEEE transactions on power electronics 33 (1), 175-187, 2017
Implementation of the Constant Current and Constant Voltage Charge of Inductive Power Transfer Systems With the Double-Sided LCC Compensation Topology …
VB Vu, DH Tran, W Choi
IEEE Transactions on Power Electronics 33 (9), 7398-7410, 2017
A novel parameter extraction method for the one-diode solar cell model
W Kim, W Choi
Solar Energy 84 (6), 1008-1019, 2010
High-Voltage and Low-Leakage-Current Gate Recessed Normally-Off GaN MIS-HEMTs With Dual Gate Insulator Employing PEALD-/RF-Sputtered-
W Choi, O Seok, H Ryu, HY Cha, KS Seo
IEEE Electron Device Letters 35 (2), 175-177, 2013
Soft-switched interleaved boost converters for high step-up and high-power applications
S Park, Y Park, S Choi, W Choi, KB Lee
IEEE Transactions on Power Electronics 26 (10), 2906-2914, 2010
Design and control of the phase shift full bridge converter for the on-board battery charger of the electric forklift
TH Kim, SJ Lee, W Choi
8th International Conference on Power Electronics-ECCE Asia, 2709-2716, 2011
Fuel cell powered UPS systems: design considerations
W Choi, P Enjeti, JW Howze
IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC'03 …, 2003
Fuel-cell powered uninterruptible power supply systems: Design considerations
W Choi, JW Howze, P Enjeti
Journal of Power Sources 157 (1), 311-317, 2006
An experimental evaluation of the effects of ripple current generated by the power conditioning stage on a proton exchange membrane fuel cell stack
W Choi, PN Enjeti, JW Howze, G Joung
Journal of materials engineering and performance 13 (3), 257-264, 2004
A novel dual full-bridge LLC resonant converter for CC and CV charges of batteries for electric vehicles
HN Vu, W Choi
IEEE Transactions on Industrial Electronics 65 (3), 2212-2225, 2017
Improvement of Instability in Normally-Off GaN MIS-HEMTs Employing as an Interfacial Layer
W Choi, H Ryu, N Jeon, M Lee, HY Cha, KS Seo
IEEE Electron Device Letters 35 (1), 30-32, 2013
Advanced dynamic simulation of supercapacitors considering parameter variation and self-discharge
SH Kim, W Choi, KB Lee, S Choi
IEEE Transactions on Power Electronics 26 (11), 3377-3385, 2011
High-Quality ICPCVD for Normally Off AlGaN/GaN-on-Si Recessed MOSHFETs
BR Park, JG Lee, W Choi, H Kim, KS Seo, HY Cha
IEEE electron device letters 34 (3), 354-356, 2013
Methanol electrooxidation of Pt catalyst on titanium nitride nanostructured support
JM Lee, SB Han, YJ Song, JY Kim, B Roh, I Hwang, W Choi, KW Park
Applied Catalysis A: General 375 (1), 149-155, 2010
Optimal charge pattern for the high-performance multistage constant current charge method for the li-ion batteries
AB Khan, W Choi
IEEE transactions on energy conversion 33 (3), 1132-1140, 2018
Analysis of the effects of inverter ripple current on a photovoltaic power system by using an AC impedance model of the solar cell
W Kim, VH Duong, TT Nguyen, W Choi
Renewable energy 59, 150-157, 2013
Development of a method to estimate the lifespan of proton exchange membrane fuel cell using electrochemical impedance spectroscopy
J Lee, JH Lee, W Choi, KW Park, HY Sun, JH Oh
Journal of Power Sources 195 (18), 6001-6007, 2010
Shape-controlled Pd nanostructure catalysts for highly efficient electrochemical power sources
YW Lee, JK Oh, HS Kim, JK Lee, SB Han, W Choi, KW Park
Journal of Power Sources 195 (18), 5896-5901, 2010
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