YEAR 2024

  • Nguyen Nguyen-Anh, Phuong-Ha La, and Sung-Jin Choi. "A Novel Balancing Algorithm for Lithium Battery Strings Using Bidirectional Charge Circulation." 2024 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2024. READ MORE

  • Pham Ngoc-Thao, Jong-Hoon Kim, and Sung-Jin Choi. "Novel Battery Model Employing Variable Capacitor for Effective Description of SOC Behavior." 2024 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2024. READ MORE

  • Byeong-Ryeol Na, Jeong-Soo Park, Chanh-Tin Truong, and Sung-Jin Choi. "Novel Burst-mode Control Strategy for Enhanced Light-load Efficiency of DAB Converters." In 2024 IEEE Energy Conversion Congress and Exposition (ECCE). READ MORE

YEAR 2023

  • Duong, Tan-Quoc, and Sung-Jin Choi. "Sensor-Reduction Control for SPS-Modulated DAB Converter using Ultra-Local Model." 2023 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2023. READ MORE

  • Nguyen-Anh Nguyen, Phuong-Ha La, and Sung-Jin Choi. "Pre-heating Method Employing Pulse Current Excitation for Effective Charging of LiB in Low-Temperature Environment." 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023-ECCE Asia). IEEE, 2023. READ MORE

  • Tofopefun Nifise Olayiwola, and Sung-Jin Choi. "Effective Approximation of the Photovoltaic Characteristic Curves using a Double-shaped Superellipse." 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023-ECCE Asia). IEEE, 2023. READ MORE

  • Chanh-Tin Truong, and Sung-Jin Choi. "Analysis of Capacitor Parasitic Effects on Output Voltage Ripple and Load Transient of DAB Converters." 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023-ECCE Asia). IEEE, 2023. READ MORE

  • Tan-Quoc Duong, and Sung-Jin Choi. "Deadbeat Control with Current Stress Optimization for Extended Phase-Shift Modulated DAB Converter." 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023-ECCE Asia). IEEE, 2023. READ MORE

  • Tan-Quoc Duong, Tofopefun Nifise Olayiwola, Tae-Yeong Im, and Sung-Jin Choi. "Deadbeat Control for Single-Input Dual-Output Dual Active Bridge Converter." 2023 26th International Conference on Mechatronics Technology (ICMT). IEEE, 2023. READ MORE

YEAR 2022

  • Ngoc–Thao Pham, Phuong–Ha La, and Sung–Jin Choi. "Online Model-Parameter Identification for Battery Cells Utilizing Switched-Capacitor Equalizers." 2022 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2022. READ MORE

  • Chanh-Tin Truong and Sung-Jin Choi. "A More Accurate ZVS Criterion for Resonant Converters." 2022 International Power Electronics Conference (IPEC-Himeji 2022-ECCE Asia). IEEE, 2022. READ MORE

  • Nguyen-Anh Nguyen, Phuong-Ha La, and Sung-Jin Choi. "High-speed Target SOC Alignment Algorithm for Second-life Battery Pack Maintenance." 2022 IEEE Transportation Electrification Conference & Expo (ITEC). IEEE, 2022. READ MORE

  • Phuong-Ha La and Sung-Jin Choi. "Unified Average Model of Switched-Passive-Network Equalizer for Performance Assessment in Long-term Simulations." 2022 IEEE Transportation Electrification Conference & Expo (ITEC). IEEE, 2022. READ MORE

  • Tan-Quoc Duong, and Sung-Jin Choi. "Deadbeat Control with Parameter Identification under Single Phase-Shift Modulation for Dual Active Bridge Converters." In 2022 IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 1222-1227. IEEE, 2022. READ MORE

  • Tan-Quoc Duong and Sung-Jin Choi, “Current-Sensorless Robust Control for Bidirectional DC-DC Dual Active Bridge Converter with Current Stress Optimization,” in 2022 The 13th Asian Control Conference (ASCC 2022), 2022, pp. 2087–2088. READ MORE

YEAR 2021

  • Phuong-Ha La, and Sung-Jin Choi. "Integrated On-line EIS Measurement Scheme Utilizing Flying Capacitor Equalizer for Series Battery String." 2021 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2021. READ MORE

  • Phuong-Ha La, and Sung-Jin Choi. "Combined Equalizer Based on Switch-matrix and Bi-directional Converter for Parallel-Connected Battery Packs in Data-Center or Telecommunication." 2021 International Symposium on Electrical and Electronics Engineering (ISEE). IEEE, 2021. READ MORE

  • Nguyen-Anh Nguyen,Phuong-Ha La, Ngoc-Thao Pham, and Sung-Jin Choi. "Novel Battery Equalizer-Charger Symbiosis Structure based on Three-Port DC-DC Converters." In 2021 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 180-185. IEEE, 2021. READ MORE

YEAR 2020

  • Phuong-Ha La, and Sung-Jin Choi. "Reactive Balancing Circuit for Paralleled Battery Modules Employing Dynamic Capacitance Modulation." 2020 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2020. READ MORE

YEAR 2019

  • Tin, Truong Chanh, Phuong-Ha La, and Sung-Jin Choi. "A novel asymmetric half-bridge inverter for capacitive wireless power transfer." 2019 International symposium on electrical and electronics engineering (ISEE). IEEE, 2019. READ MORE

  • Phuong-Ha La, Hong-Hee Lee, and Sung-Jin Choi. "A single-capacitor equalizer using optimal pairing algorithm for series-connected battery cells." 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2019. READ MORE

  • Phuong-Ha La, Truong Chanh Tin, and Sung-Jin Choi. "Dynamic Resistance Battery Equalization for Capacity Optimization of Parallel-Connected Cells." 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019-ECCE Asia). IEEE, 2019. READ MORE

  • Phuong-Ha La, and Sung-Jin Choi. "Synthesis of balancing topologies for parallel-connected battery cells by principle of duality." 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019-ECCE Asia). IEEE, 2019. READ MORE

YEAR 2018

  • Thusitha Randima Wellawatta, and Sung-Jin Choi. "Universal control strategy using operating point projection technique for solar array hardware emulation." 2018 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2018. READ MORE

  • Duy-Hung Dam, Sung-Jin Choi, and Hong-Hee Lee. "A Droop Based Controller for Super-Capacitor to Compensate the Transient Current and Pulsed Load in DC Microgrid." In 2018 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 4771-4775. IEEE, 2018. READ MORE

  • Chae-ho Jeong, Phuong-Ha La, Sung-Jin Choi, and Hee-Su Choi. "A novel target detection algorithm for capacitive power transfer systems." In 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 3174-3177. IEEE, 2018. READ MORE

  • Chae-Ho Jeong, Hee-Su Choi, and Sung-Jin Choi. "Single-stage PWM converter for dual-mode control of capacitive wireless power transmission." 2018 IEEE PELS workshop on emerging technologies: wireless power transfer (wow). IEEE, 2018. READ MORE

  • Thusitha Randima Wellawatta, and Sung-Jin Choi. "A novel partial shading detection algorithm utilizing power level monitoring of photovoltaic panels." 2018 International Power Electronics Conference (IPEC-Niigata 2018-ECCE Asia). IEEE, 2018. READ MORE

YEAR 2017

  • Chae-Ho Jeong, Hee-Su Choi, and Sung-Jin Choi. "FOM-rd plane: An effective design and analysis methodology for resonant energy link in inductive power transfer." 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2017. READ MORE

  • Thusitha Randima Wellawatta, Young-Tae Seo, Hong-Hee Lee and Sung-Jin Choi, "A regulated incremental conductance (r-INC) MPPT algorithm for photovoltaic system." 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2017. READ MORE

  • Hee-Su Choi, and Sung-Jin Choi. "An effective transformer simulation technique using PSIM magnetic elements." 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017-ECCE Asia). IEEE, 2017. READ MORE

  • Hee-Su Choi, and Sung-Jin Choi. "A Modeling of Integrated Transformer using PSIM Magnetic Elements." IFOST, 2017 READ MORE

  • Young-Tae Seo, Thusitha Wellawatta, and Sung-Jin Choi. "Design of PV Model-based Solar Array Simulator Engine using Optimization Method." IFOST 2017 READ MORE

YEAR 2016

  • Young-Tae Seo, Jun-Young Park, and Sung-Jin Choi. "A rapid IV curve generation for PV model-based solar array simulators." 2016 IEEE energy conversion congress and exposition (ECCE). IEEE, 2016. READ MORE

  • Sung-Jin Choi*, and Hee-Su Choi. "Analysis and design of capacitive power transmission system employing out-of-band wireless feedback link." 2016 IEEE applied power electronics conference and exposition (APEC). IEEE, 2016. READ MORE

  • Thusitha Wellawatta, Jun-Kyu Park, Sung-Jin Choi, and Jin Hur. "Reduction method based on looped slot wedges for end to end shaft voltage in inverter driven IPM motor." In 2016 IEEE Conference on Electromagnetic Field Computation (CEFC), pp. 1-1. IEEE, 2016. READ MORE

  • Jun-Kyu Park, Thusitha Wellawatta, Sung-Jin Choi, and Jin Hur. "Mitigation method of the shaft voltage according to parasitic capacitance of the PMSM." In 2016 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 1-6. IEEE, 2016. READ MORE

YEAR 2015

  • Sung-Jin Choi, and Hee-Su Choi. "Capacitive wireless power transfer system with double matching transformers for reduced stress and extended ZVS range." 2015 IEEE international telecommunications energy conference (INTELEC). IEEE, 2015. READ MORE

  • Jun-Young Park, and Sung-Jin Choi. "Datasheet-based circuit parameter extraction method for maximum power point simulation of photovoltaic array." 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia). IEEE, 2015. READ MORE

  • Hee-Su Choi, Jun-Young Park, and Sung-Jin Choi. "Analysis and control of capacitive-coupled wireless power transmission system." 2015 15th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2015. READ MORE

  • Jun-Young Park, and Sung-Jin Choi. "Tolerance design of ballast resistance for multi-string LED driver." In 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe), pp. 1-10. IEEE, 2015. READ MORE

YEAR 2014

  • Sung-Jin Choi. "Adaptive current-mirror LED driver employing super-diode configuration." 2014 IEEE International Conference on Industrial Technology (ICIT). IEEE, 2014. READ MORE

YEAR 2012

  • Cong-Long Nguyen, Hong-Hee Lee, and Sung-Jin Choi. "Power factor control scheme for zero current harmonics of battery charger in EVs." 2012 IEEE Vehicle Power and Propulsion Conference. IEEE, 2012. READ MORE

YEAR 2007

  • Joung-hu Park, Sung-Jin Choi, S. Lee and B. H. Cho, "Gain-adjustment Technique for Resonant Power Converters with Piezoelectric Transformer," 2007 IEEE Power Electronics Specialists Conference, 2007, pp. 2549-2553, doi: 10.1109/PESC.2007.4342416. READ MORE

YEAR 2006

  • Myounghwan Ryu, Sung-Jin Choi, Sangmin Lee, and Bo H. Cho. "A new piezoelectric transformer driving topology for universal input AC/DC adapter using a constant frequency PWM control." In Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC'06., pp. 4-pp. IEEE, 2006. READ MORE

  • Sung-Jin Choi, et al. "Adaptive frequency control strategy for piezoelectric transformer in AC/DC adapter applications using phase detector." Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC'06.. IEEE, 2006. READ MORE

YEAR 2005

  • Sung-Jin Choi, Taeil Kim and B. H. Cho, "Design of half-bridge piezo-transformer converters in the AC adapter applications," Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005, pp. 244-248 Vol. 1, doi: 10.1109/APEC.2005.1452927. READ MORE

  • Taeil Kim, Sung-Jin Choi, Sangmin Lee, and Bo H. Cho. "New piezoelectric transformer adapter with universal input voltage range." In 2005 International Conference on Power Electronics and Drives Systems, vol. 2, pp. 1223-1227. IEEE, 2005. READ MORE

  • Sung-Jin Choi, Taeil Kim, Sangmin Lee, and Bo H. Cho. "Modeling and characterization of radial-mode disk-type piezoelectric transformer for AC/DC adapter." In 2005 IEEE 36th Power Electronics Specialists Conference, pp. 624-629. IEEE, 2005. READ MORE

YEAR 2004

  • En-Sung Park, Sung Jin Choi, J. Moon Lee and B0 H. Cho, "A soft-switching active-clamp scheme for isolated full-bridge boost converter." Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC'04.. Vol. 2. IEEE, 2004. READ MORE

YEAR 1999

  • In-Kyu Lee, Sung-Jin Choi, Kyu-Chan Lee, and Bo H. Cho. "Modeling and control of automotive HID lamp ballast." In Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No. 99TH8475), vol. 1, pp. 506-510. IEEE, 1999. READ MORE

YEAR 1998

  • Sung-Jin Choi, Kyu-Chan Lee and B. Cho, "Design of fluorescent lamp ballast with PFC using a power piezoelectric transformer," APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition, 1998, pp. 1135-1139 vol.2, doi: 10.1109/APEC.1998.654039. READ MORE