"A Low Cost, Fast-Rising, High-Voltage Pulsed Power Modulator Based on a Discontinuous Conduction Mode Flyback Converter" ChangYu Liu, Chan-Gi Cho, Seung-Ho Song, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.222 , VOL. 48 , NO. 12 , pg. 4387-4393 , Dec. 2020

"Pulsed Power Modulator with Active Pull-Down Using Diode Reverse Recovery Time" Su-Mi Park and Hong-Je Ryoo , Trans. On Power Electronics , I.F: 6.153 , VOL. 35 , NO. 3 , pg. 2943-2949 , Mar. 2020

"Study on the High-Voltage Solid-State Pulsed-Power Modulator for Parallel Reactor Operation" Seung-Ho Song , Hyun-Bin Jo, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.309 , VOL. 47 , NO. 10 , pg. 4495-4499 , Oct. 2019

"Solid-State Bipolar Pulsed-Power Modulator Based on a Half-Bridge Power Cell Structure" Seung-Hee Lee, Seung-Ho Song, Hyun-Bin Jo, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.309 , VOL. 47 , NO. 10 , pg. 4466-4472 , Oct. 2019

"Integrated 15-kV DC Trigger and Simmer Power Supply for Light Sintering" Chan-Gi Cho , Ziyi Jia, Seung-Ho Song , Jae-Beom Ahn, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.309 , VOL. 47 , NO. 10 , pg. 4473-4480 , Oct. 2019

"Design of a 5.4 kJ/s Three-Phase Resonant Converter based on a Lithium Polymer Battery" Chan-Gi Cho, Ziyi Jia, Jae-Beom Ahn and Hong-Je Ryoo , Trans. On Dielectrics and Electrical Insulation , I.F: 2.554 , VOL. 26 , NO. 2 , pg. 381-389 , Apr.2019

"Comparative Study of Pulse Trigger and DC Trigger Circuit for Xenon Flash Lamp Drivers" Seung-Ho Song, Chan-Gi Cho, Su-Mi Park, Hyun-Il Park and Hong-Je Ryoo , Trans. On Dielectrics and Electrical Insulation , I.F: 2.554 , VOL. 26 , NO. 2 , pg. 397-404 , Apr.2019

"Design and Analysis of an LCC Resonant Converter For Xenon Flash Lamp Simmer Circuit" Seung-Ho Song, Chan-Gi Cho, Su-Mi Park, Hyun-Il Park, Woo-Cheol Jeong and Hong-Je Ryoo , Trans. On Dielectrics and Electrical Insulation , I.F: 2.554 , VOL. 26 , NO. 2 , pg. 484-491 , Apr.2019

"A Novel Series-Connected Xenon Lamp Power Supply System using a Pulse Trigger with Simmer Circuits for Pulsed Light Sintering Application" Chan-Gi Cho, Seung-Ho Song , Su-Mi Park, Hyeon-Il Park , Sung-Roc Jang, and Hong-Je Ryoo , Trans. On Industrial Electronics , I.F: 7.515 , VOL. 66 , NO. 1 , pg. 233-244 , Jan.2019

"High-efficiency Bidirectional Three-phase LCC Resonant Converter with a Wide Load Range" Suk-Ho Ahn, Sung-Roc Jang, and Hong-Je Ryoo , Trans. On Power Electronics , I.F: 6.373 , VOL. 34 , NO. 1 , pg. 97-105 , Jan.2019

"Design and Implementation of Novel Series Trigger Circuit for Xenon Flash Lamp Driver" Seung-Ho Song , Chan-Gi Cho, Su-Mi Park, Hyun-Il Park, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.325 , VOL. 46 , NO. 10 , pg. 3584-3590 , Oct.2018

"Study of Exhaust Air Treatment from a Ship Building Factory Painting Facility Using Pulse Plasma Technology" Hee-Sung Jin, Seung-Ho Song , Chan-Gi Cho, Su-Mi Park, and Hong-Je Ryoo , Trans. On Plasma Science , I.F: 1.325 , VOL. 46 , NO. 10 , pg. 3552-3556 , Oct.2018

"Trapezoidal Approximation of LCC Resonant Converter and Design of Multi-Stage Capacitor Charger for Solid-State Marx Modulator" Sung-Roc Jang, Chan-Hun Yu, and Hong-Je Ryoo , Trans. On Power Electronics , I.F: 7.224 , VOL. 33 , NO. 5 , pg. 3816-3825 , May.2018

"Simplified Design of a Solid State Pulsed Power Modulator based on Power Cell Structure" Sung-Roc Jang , Chan-Hun Yu, and Hong-Je Ryoo , Trans. On Industrial Electronics , I.F: 7.503 , VOL. 65 , NO. 3 , pg. 2112-2121 , Mar.2018

"Gate Driving Circuit with Active Pull-Down Function for a Solid-State Pulsed Power Modulator" Chan-Hun Yu, Sung-Roc Jang, Hyoung-Suk Kim, and Hong-Je Ryoo , Trans. On Power Electronics , I.F: 7.224 , VOL. 33 , NO. 1 , pg. 240-247 , Jan.2018