Presented Paper at APEC 2019

At the Applied Power Electronics Conference (APEC) 2019, in Anaheim, CA, USA, Selin Bagci presented her paper on “Low-Power Photovoltaic Energy Harvesting With Parallel Differential Power Processing Using a SEPIC” during the T40 Power Electronics Applications Session on March 21, 2019. Selin is a previous PEARS undergraduate intern and current MS student at National Taiwan University of Science and Technology. Congratulations to Selin on her first major conference presentation.

Invited Seminar at National Ilan University, Yilan, Taiwan

Prof. Katherine A. Kim gave a seminar entitled “Enabling Solar Photovoltaic Energy for Wearables and Internet of Things (IoT) Applications” at National Ilan University, Yilan, Taiwan. Prof. Kim was invited by Prof. Yu-Chen Liu of the Electrical Engineering Department of National Ilan University.

Prof. Kim giving a seminar at NIU
Question and answer session after seminar at NIU
Group picture of seminar attendees

Attended S2PC 2018 in Jinju, Korea

Prof. Katherine Kim and graduate student Hoejeong Jeong  attended the Symposium on Semiconductor Power Conversion (S2PC) in Jinju, Korea on November 2-4, 2018.

On November 3, 2013, Hoejeong Jeong presented a poster on “Structure of Segmented Differential Power Processing System for Photovoltaic Applications” during Poster Session I.


Prof. Katherine A. Kim elevated to IEEE Senior Member

Prof. Katherine A. Kim was elevated to IEEE Senior Member, within the Institute of Electrical and Electronics Engineers (IEEE), in July 2018. For IEEE Senior Member grade, the applicant can self-nominate or be nominated by someone else. If you have over 10 years of professional experience (graduate school counts as professional experience) and have significant performance over 5 years (usually as a professor or engineering professional), you can apply.

Prof. Kim is most active in the IEEE Power Electronics Society (PELS). She served as the IEEE Power Electronics Society (PELS) Student Membership Chair in 2012-2013, PELS Member-At-Large for 2016-2018, and PELS Women In Engineering Co-Chair in 2018. Starting from 2017, she became an Associate Editor for the IEEE Transactions on Power Electronics. Prof. Kim plans to continue contributing to the Power Electronics field through her researcheducational videos, and service to the power electronics community. She would like to thank all her advisers and mentors through the years for their guidance and support.

Attended KIPE 2018 Annual Conference

The PEARS Lab attended the Korean Institution of Power Electronics (KIPE) 2018 Annual Conference (전력전자학술대회), July 3-6, 2018, in Hoengseong, Gangwon-do, Korea. The group enjoyed listening to technical sessions and trying the local cuisine of Hoengseong Korean beef.


On Tuesday, July 3, Prof. Katherine Kim also helped Prof. Seong-Mi Park of Korea Lift College and Prof. Kyung-Hee Han of Halla University organize the first KIPE Women Power Electronics Engineers Meeting. The event featured talks by Prof. Soyeon Kim of the Republic of Korea Naval Academy, Seo-Hyun Yeo a PhD student at Chonnam National University, and Dr. Hwi-Il Sun of the Korean Energy Research Institute (KERI). It was an important mentorship and networking opportunity for women in power electronics in Korea.


Attended COMPEL 2018 in Padova, Italy


Prof. Katherine Kim and graduate student Hoejeong Jeong attended COMPEL 2018 on June 25-28 in Padova, Italy. On Tuesday, June 26, Hoejeong Jeong presented the paper on “A Scalable Unit Differential Power Processing System Design for Photovoltaic Applications” at the Galileo Galilei Main Hall in Palazzo Bo. A job well done presenting important research on new PV differential power processing applications. Hoejeong Jeong also received a Student Travel Grant to attend COMPEL.


Attended IPEC 2018-ECCE Asia in Niigata, Japan

Prof. Katherine Kim and undergraduate intern Bo-Kyung Yoon attended the International Power Electronics Conference (ICPE 2018-ECCE Asia), May 20-24, 2018, in Niigata, Japan. Bo-Kyung Yoon presented a poster on “Circuit Modeling Approach for Analyzing Triboelectric Nanogenerators for Energy Harvesting” on Wednesday, May 23, 2018.


Also, Bing-Siang Huang from National Taiwan University of Science and Technology, Taiwan, presented a collaboration paper on “Design and Implementation of a High Power Density Active-Clamped Flyback Converter” at the High Performance Power Converters session on Wednesday, May 23, 2018.

Prof. Kim also served as a session chair for session “23G4 Renewable Energy and Storage Applications” and “21B2 Dual Active Bridge Converters” at ICPE 2018-ECCE Asia. All attendees enjoyed the excellent conference and delicious Japanese food.

Attended NGPT 2018 in Seoul, Korea


Prof. Katherine Kim, Bo-Kyung Yoon, and PEARS Lab members attended the International Conference on Nanogenerators and Piezotronics (NGPT), May 8-11, 2018, in Seoul, Korea.



Prof. Kim Co-Chaired a Technical Session on “Piezotronics/Tribotronics for Sensors, MEMS and NEMS 1” on Thursday, May 10 and gave talk entitled “Implementation Considerations for Low-power Energy Conversion Circuitry in Triboelectric Nanogenerator Energy Harvesting Applications” on Friday, May 11.



Undergraduate intern Bo-Kyung Yoon presented a poster on “Circuit Modeling of a Three-plate Triboelectric Nanogenerator with Ground System for Energy Harvesting” on  Friday, May 11. Attending NGPT 2018 was a great opportunity to learn more about transducers and better understand how to develop better power circuitry for energy harvesting.


Attended APEC 2018 in San Antonio, TX, USA

Prof. Katherine Kim attended the Applied Power Electronics Conference 2018 in San Antonio, TX, USA in March 2018.

Prof. Kim was a chair for the morning technical session “T30: Renewable Energy Topics” on March 8, 2018. The poster for the collaboration paper on “Integrated Magnetics Design for a Full-Bridge Phase-Shifted Converter” was presented by Chen Chen, Yu-Chen Liu, and Prof. Kim on March 8, 2018 (picture shown below).



Attended IEEE Seoul Section Student Paper Contest 2017 in Seoul, Korea

Prof. Katherine A. Kim and undergraduate student intern Bo-Kyung Yoon attended the IEEE Seoul Section Student Paper Contest 2017 at Hongik University, Seoul, Korea. Bo-Kyung presented her paper on “Circuit Modeling of a Three-Plate Triboelectric Nanogenerator for Energy Harvesting” at the competition (picture below). As one of the few undergraduate students in the competition, she presented and took questions on her research at the same level as the graduate students in the competition. A job well done.


Research Exhibited at International Public Transportation Forum


Graduate student Hyeun-Tae Cho represented the PEARS lab in exhibiting the U-Loop future transportation system at the International Public Transportation Forum held in Ulsan, South Korea. The research project on the U-Loop is a collaborative project, with the PEARS Lab designing and implementing the linear motor drive and photovoltaic system. Hyeun-Tae helped demo the small-scale U-Loop prototype at the exhibition, as show below (original photo here).


For more information, please UNIST’s New Center Article: UNIST’s U-Loop Displayed at International Public Transport Forum or 한국형 하이퍼루프, ‘U-Loop’모델, 대중교통 포럼에 첫 선


Attended ACEPT 2017 in Singapore

Prof. Katherine Kim attended the Asian Conference on Energy, Power and Transportation Electrification (ACEPT) in Singapore on October 24-26, 2017. On Wednesday, October 25, Prof. Kim served as the session chair for “Parallel Session 5: Microgrid and Smart Grid (MGSG).” On Thursday, October 26, Ph.D. student Kai-De Chen from National Taiwan University of Science and Technology (NTUST) presented the paper entitled “Output Double-Line Frequency Ripple Reduction Method for High Power Density Interleaved Boost Converters in Power Factor Correction Applications,” which is a collaboration paper with PEARS Lab.


Attended S2PC 2017 in Changhua, Taiwan


Prof. Katherine Kim and graduate student Hyeun-Tae Cho attended the Symposium on Semiconductor Power Conversion (S2PC) in Changhua, Taiwan on October 13-15, 2017.



On October 14, 2017, Hyeun-Tae Cho presented a poster on “Model and Control of a Scaled-Down Permanent Magnet Linear Synchronous Motor (PMLSM) for High-Speed Transportation Systems” during Poster Session I (A). Prof. Katherine Kim  was a Session Chair for Oral Session II.


Attended KIPE 2017 Annual Conference

PEARS Lab members attended the Korean Institution of Power Electronics (KIPE) 2015 Annual Conference (전력전자학술대회). The PEARS Lab presented five papers during the conference:

Hoejeong Jeong presented a poster for the paper entitled “GaN Boost Converter Development for High Power Density” on July 4, 2017.


Hyunji Lee presented the paper entitled “Comparison of Two Parallel Differential Power Processing Configuration” on July 5, 2017.


Kyoungjun Kwon presented the paper entitled “Photovoltaic Panel Orientation Study for Tube-Enclosed Transportation Systems” on July 5, 2017.


Hyeun-Tae Cho presented a poster for the paper entitled “Sensorless Field-Oriented Control Design for High-Power 3-Level PMSM Drive Inverter” on July 6, 2017.


Kyu Taek Oh presented a poster for the paper entitled “Comparison & Analysis of The Permanent Magnet DC Motor Control Method” on July 6, 2017.


Attended IFEEC 2017-ECCE Asia in Kaohsiung, Taiwan


Prof. Katherine Kim and graduate students Hyunji Lee and Kyoungjun Kwon attended IFEEC 2017-ECCE Asia in Kaohsiung, Taiwan, on June 3-7, 2017. Hyunji Lee presented her research paper on “Differential Power Processing Converter Design for Photovoltaic-Powered Charging Bag” as shown below.


Kyoungjun Kwon also presented his research paper on “Photovoltaic Panel Configuration Study for Tube-Enclosed Transportation Systems” as shown below.


Attended ICSET 2016 in Hanoi, Vietnam

Prof. Katherine Kim and graduate student Xuan Hung Mai attended the IEEE International Conference on Sustainable Energy Technologies (ICSET) in Hanoi, Vietnam on November 14-16, 2016.


Xuan Hung Mai presented a poster on “Electric-Thermal Photovoltaic Model Characteristics Validation” on November 15 in the Photovoltaics and Solar Thermal Technical Session (see photo below).