"High Voltage Pulsed Power Modulator with High Reliability and Fast Switching Speed for Medical Lasers" Hyoung-Suk Kim, Chan-Hun Yu, Sung-Roc Jang, Guang-Hoon Kim, Hong-Je Ryoo , Proceedings IECON 2016 (Industrial Electronics Conference) , pg. 3415-3418 , Oct.2016

"Design of a High Efficiency 40kV, 300us, 200Hz Solid-State Pulsed Power Modulator with Long Pulse Width" Chan-Hun Yu, Sung-Roc Jang, Hyoung-Suk Kim, Gideon Nimo Appiah, Hong-Je Ryoo , Proceedings IECON 2016 (Industrial Electronics Conference) , pg. 3342-3347 , Jun.2016

"Electrification of a truck for city delivery services" , 28th International Electric Vehicle Symposium and Exhibition 2015, EVS 2015 (SCOPUS) , pg. 1-7 , May.2015

"Comparison of DCM and CCM operated resonant converters for high-voltage capacitor charger" Ji-Woong Gong, Suk-Ho Ahn, Hong-Je Ryoo, Sung-Roc Jang , Proceedings IECON 2013 (Industrial Electronics Conference) , pg. 532-537 , Nov.2013

"Implementation of 60-kW fast charging system for electric vehicle" Suk-Ho Ahn, Ji-Woong Gong, Hong-Je Ryoo, Sung-Roc Jang , Proceedings IECON 2013 (Industrial Electronics Conference) , pg. 7256-7261 , Nov.2013

"Design of LCC resonant converter for renewable energy systems with wide-range input voltage" KA Cho, SH Ahn, SB Ok, HJ Ryoo, SR Jang, GH Rim , Conference Proceedings – 2012 IEEE 7th International Power Electronics and Motion Control Conference – ECCE Asia, IPEMC 2012 (CONFERENCE) , pg. 1221-1228 , Jun.2012

"EV R&D activities in Korea electrotechnology research institute (KERI)" , 26th Electric Vehicle Symposium 2012, EVS 2012 (CONFERENCE) , May.2012

"Design and analysis of series resonant converter for 30kW industrial magnetron" SR Jang, HJ Ryoo, JS Kim, SH Ahn , Proceedings IECON 2010 (Industrial Electronics Conference) , pg. 415-420 , Nov.2010

"A comparative study of the gate driver circuits for series stacking of semiconductor switches" SR Jang, SH Ahn, HJ Ryoo, GH Rim , Proceedings of the 2010 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2010 (CONFERENCE) , pg. 322-326 , May.2010

"Novel high voltage capacitor charger for pulsed power modulator" SR Jang, SH Ahn, HJ Ryoo, GH Rim , Proceedings of the 2010 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2010 (CONFERENCE) , pg. 317-321 , May.2010

"Design and testing of the high voltage capacitor charger for 150KJ pulsed power application" SR Jang, HJ Ryoo, JS Kim, YB Kim , PPC2009 – 17th IEEE International Pulsed Power Conference (CONFERENCE) , pg. 1376-1379 , Jul.2009

"Application of pulsed power system for water treatment of the leachate" SR Jang, HJ Ryoo, YS Jin, SH Ahn, GH Rim , PPC2009 – 17th IEEE International Pulsed Power Conference (CONFERENCE) , pg. 980-983 , Jul.2009

"Design and performance of compact 150 KJ capacitive pulsed power system for electro-thermal chemical gun application" YS Jin, JS Kim, HJ Ryoo, YB Kim, BH Lee, SH Kim, KS Yang , 2009 IEEE International Conference on Plasma Science , Jun.2009

"DLC coatings by PI3D:Low-voltage vs High-voltage Biasing" HJ Ryoo, SA Nikiforov, GH Rim, SV Shenderey, HS Oh, SI Chung , Acta Physica Polonica A , Vol.115 , No.6 , pp.1146-1148 , Jun.2009

"Development of 60kV, 300A, 3kHz Pulsed Power Modulator for Wide Applications" Acta Physica Polonica A/ HJ Ryoo, SR Jang, G Goussev, GH , Acta Physica Polonica A , Vol.115 , No.6 , pp.967-970 , Jun.2009