Professor

 Major of Power Electronics, School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, (Jan. 2013 – Present) 

Detail Research Items

• Bidirectional Power Interface for Smart Grid & DC Microgrid 

• Resonant Power Interface for Wireless Power Transfer & Industry Applications 

• High-frequency Power Interface using Wide Band-gap Devices 

• Spread Spectrum Technique for EMI Reduction in Power Converters 

• Power Hardware-in-the-Loop Simulation for Renewable Energy & Grid Systems 

• Cyber Security for Power Systems using High-reliable Power Interface & PLC 

• High-efficiency Power Conversion for Energy Harvesting Applications 

• Control Theory and Algorithm for Various Power Conversion 

Senior Researcher

Korea Electrotechnology Research Institute (KERI), Changwon, Korea. (Feb. 2011 – Dec. 2012) 

Power Conversion & Control (PCC) Research Center, HVDC Research Division (Oct.2011 – Dec. 2012) 

New & Renewable Energy System Research Center, Smart Grid Research Division (Feb. 2011 – Sept. 2011)

Detail Research Items

•   Bidirectional Power Conversion for LVDC Distribution Systems 

•   High Voltage Power Conversion for HVDC Power Transmissions 

•   High Efficiency Power Conversion & Grid Interface for Renewable Energy Systems 

•   Static Power Conversions using Digital Signal Processors

Postdoctoral Research Associate

 Texas A&M University at Qatar (TAMUQ), Doha, Qatar. (Jan. 2009 – Dec. 2010) 

 System Engineering and Energy Conversion (SEEC) Lab. in Electrical and Computer Engineering (Supervisor: Dr. Prasad Enjeti, Dr. Shehab Ahmed) 

Detail Research Items

• Dynamic modeling and real-time simulation of renewable energy sources 

• Power Hardware-in-the-Loop (PHIL) simulation for fuel cell, photovoltaic, and electrical load 

• Achieved 1 Qatar National Research Fund (QNRF) project from the first year (fuel cell related project)

Senior Engineer

 Samsung Electronics Co., Ltd., (Mar. 2006 – Jan. 2009) 

 Advanced Research Group 2 in Digital Printing Division. 

Detail Research Items

• Designed SMPSs, HVPSs, and inverters for laser printer applications

•  Achieved 6 advanced R&D and 4 producing projects

Researcher

 POSTECH, (Mar. 2004 – Mar. 2006) 

Worked in Automobile Mechatronics Laboratory

Detail Research Items 

• Designed sensorless drive and diagnosis systems for induction motors 

• Achieved two R&D projects

Graduate Research Assistant

POSTECH, (Mar. 2002 – Feb. 2004) 

Worked in Energy Circuit Lab., Department of Electronic and Electrical Eng

Detail Research Items 

•  Achieved Six research projects during Ph.D. course 

•  Achieved one research project during M.S. course

• High-Frequency Power Conversions Using Wide-Band Gap Devices 

• Hybrid Power Control Algorithm for Various Power Conversion Applications 

• EMI Reduction Techniques using Spread Spectrum & Filters 

• Resonant Power Conversions for Wireless Power Transfer & Induction Heating 

• Bidirectional Power Conversions for Smart Grid & DC Microgrid 

• Multi-Level Power Converters for MV & LV DC Distribution Systems 

• Real-Time & Hardware-in-the-loop (HIL) Simulation Techniques 

• High-Efficiency Power Conversions for Energy Harvesting and Renewable Energies 

• Advanced Digital Control and Signal Processing Techniques for Power Electronics 

Professor (2022-Present)

UNIST, Ulsan, Korea. Department of Electrical Engineering. 

Detailed teaching items

• Advanced Power Electronics

For Graduate course for master cadidate ( 1st semester in 2023)

• Power Systems

For Graduate course for master cadidate ( 2nd semester in 2022)

• Introduction to the State-of-Art Electrical Engineering 

For Undergraduate for freshman and sophomore ( 1 st semester in 2022 )

Associate Professor (2017-2021)

UNIST, Ulsan, Korea. Department of Electrical Engineering. 

Detailed teaching items

• Electric Energy Systems 

For Undergraduate for junior, 1 st semester in 2021 

• Advanced Power Electronics 

For Graduate course for master candidate, 1 st semester in 2021, 2 nd semester in 2017

• Power Electronics 

For Undergraduate for senior and graduate students, 2 nd semester in 2020, 1 st semester in 2019 

• Power Systems 

     For Graduate course for M.S. and Ph.D. candidates, 1 st semester in 2019 

• Intelligent Power Interface 

For Graduate course for Ph.D. candidate, 1 st semester in 2018

• Digital System Laboratory 

For Undergraduate course for junior,1 st semester in 2017 and 2018

• Circuit Theory 

For Undergraduate course for sophomore, 2 nd semester in 2017 and 2018 

Assistant Professor (2013-2016)

UNIST, Ulsan, Korea. School of Electrical and Computer Engineering. 

Detailed teaching items

• Intelligent Power Interface 

For Graduate course for Ph.D. candidates, 1 st semester in 2016

• Engineering Programming II 

For Undergraduate course for freshman, 2 nd semester in 2015

• Advanced Power Electronics

For Graduate course for master candidates, 2 nd semester in 2014, 2015, and 2016

• Fundamentals of Power Electronics

For Undergraduate for senior and graduate students, 3 rd semester in 2013, 1st semester in 2014 and 2015

• Digital System Laboratory 

For Undergraduate course for sophomores, 1 st semester in 2013, 2014, and 2016

• Electronics Experiment Laboratory

For Undergraduate course for juniors, 2 nd semester in 2013 

Miscellaneous

Senior Engineer (2006-2009)

Samsung Electronics Co., Ltd., Suwon, Korea. 

Member of professional teaching committee for Digital Printing Division.

Detailed teaching items

• Power electronics part

• New research employees of Digital Printing Division

• New employees of patent division in Digital Media Business 

Graduate Teaching Assistant (2000-2003)

POSTECH, Pohang, Korea. 

Worked in undergraduate and graduate courses.

Detailed teaching items

• Experiment of Electrical Circuits course for graduate students 

• Power Electronics course for seniors 

• Experiment of General Electronics course for juniors 

Academic Services

• UNIST

Head of Department of Electrical Engineering, College of Information-Bio Convergence Engineering

Ulsan National Institute of Science and Technology (UNIST) since Apr. 2021 

Editorial Services

• IEEE

Associate Editor in IEEE Journal of Emerging and Selected Topics of Power Electronics (JESTPE) 

• KIPE

Editor in Journal of Power Electronics (JPE)

Editorial Committee Member of Korean Institute of Power Electronics 

International Services

• IEEE

Asian Liaison of IEEE-IAS Industrial Power Converters Committee (IPCC) 

Membership

• IEEE

Senior Member of IEEE Industrial Electronics Society

Power Electronics Society, Industry Applications Society, and Power & Energy Society 

• KIPE

Board Member of Academic Affair, Korean Institute of Power Electronics 

Review Services

• Nature Electronics 

• IEEE    Trans. Industrial Electronics, Trans. Power Electronics, Trans. Energy Conversion, Trans. Industry Applications,

           Industrial Electronics Magazine, etc. 

• IET      Proc. Electric Power Applications, Proc. Power Electronics 

• KIPE   Journal of Power Electronics (JPE) 

• KIEE   Journal of Electrical Engineering & Technology (JEET) 

• Conf   IEEE Applied Power Electronics Conference (APEC), IEEE Energy Conversion & Exposition Conference (ECCE), 

          IEEE ECCE-Asia, etc.