Katherine A. Kim, Pradeep S. Shenoy, and Philip T. Krein, “Converter Rating Analysis for Photovoltaic Differential Power Processing Systems,” IEEE Trans. Power Electronics, vol. 30, no. 4, pp. 1987-1997, April 2015. (IEEE Xplore Link)
Outstanding Teaching Award
Prof. Katherine Kim was honored to receive an “Outstanding Teaching Award” from the President of UNIST on March 18, 2015. She taught EE313: Introduction to Control in Fall 2014 and utilized a “flipped-learning” approach with video lectures, which are publicly available on YouTube: https://www.youtube.com/playlist?list=PLmK1EnKxphikZ4mmCz2NccSnHZb7v1wV-
Prof. Kim would like to thank her EE313 students for being very responsive and adaptive to her non-traditional method of teaching, and for giving her excellent feedback on how to further improve the course. She plans to teach the course again in Fall 2015.
IEEE Conference: APEC 2015
Gab-Su Seo, Katherine A. Kim, Kyu-Chan Lee, Kyung-Jun Lee, and Bo-Hyung Cho, “A New DC Arc Fault Detection Method Using DC System Component Modeling and Analysis in Low Frequency Range,” in Proc. IEEE Applied Power Electron. Conf., Mar. 2015, pp. 2438-2444. (IEEE Xplore Link)
Xuan Hung Mai – M.S.
Xuan Hung Mai completed his Bachelor of Science degree in Electrical and Computer Engineer (ECE) from Ho Chi Minh University of Technology, Vietnam in 2014. His senior thesis was on a maximum power point tracking algorithm for partial shading conditions in photovoltaic (PV) panels. He received the Masters of Science degree in ECE from Ulsan National Institute of Science and Technology (UNIST) in February 2017. He is currently a Hardware Developer at SolarBK, Vietnam. His research interests are photovoltaic system performance and fault detection, specifically, hot spot detection method in commercialized PV panels.
Papers:
Spring 2015 Update
The spring 2015 semester has started at UNIST!
This semester, Prof. Katherine A. Kim is teaching a newly-established graduate course on power systems (based on the previous Special Topics course).
ECE560: Power Systems [전력시스템]
Level: Masters Course
Description: Power Systems is a graduate level course where you will learn the basics of the electric power grid and present-day research challenges in power systems. The primary goal of the course is for students to gain a clear understanding of how the power grid and power systems functions and to be able to communicate that understanding to their peers.
Also, two new M.S. students have joined the PEARS Lab:
Check out their profiles under the People tab.
Hyunji Lee (이현지) – M.S.
Hyunji Lee received the B.S. and M.S. degrees in electrical engineering from the Ulsan National Institute of Science and Technology, Ulsan, South Korea, in 2015 and 2017, respectively. She is working as an Assistant Engineer with Fine Inc., Seoul, South Korea. Her research interests include design and analysis of differential power processing systems for photovoltaic applications.
ORCID: 0000-0002-0265-1902
Papers:
Winter 2015 Update
Two undergraduate students have joined the PEARS Lab and are working on power converters for the 2015 International Future Energy Challenge (IFEC):
Check out their profiles under the People tab.
IEEE IAS 2014 Annual Meeting Attendance
Prof. Katherine A. Kim attended the IEEE Industrial Applications Society Annual Meeting on October 5-9, 2014 in Vancouver, Canada.
At the meeting she:
- Gave an update on the Student/Young Professional activities as the Student Membership Chair of the IEEE Power Electronics Society
- Presented a poster entitled “Hot Spot Prevention Methods for Photovoltaic Systems”
- Chaired the “Student Technical Session”
Fall 2014 Update
Katherine A. Kim (김예린) has officially started as an Assistant Professor in the School of Electrical and Computer Engineering at Ulsan National Institute of Science and Technology (UNIST). In Fall 2014, she will be starting up her research lab and teaching the following courses:
EE313: Introduction to Control [자동제어공학개론]
Level: Undergraduate 3rd-year course
Description: This course introduces fundamentals of linear systems control: mathematical modeling, analysis, and design of systems, transfer function, root locus, bode diagram, Nyquist method, and state space method.
ECE637: Special Topics: Power Systems [전자회로설계및응용특수토픽III]
Level: Masters Course
Description: This special topic course on Power Systems is a graduate level course where you will learn the basics of the electric power grid and the challenges of moving towards a more intelligent grid.
IEEE Conference: APEC 2014
Sairaj V. Dhople, Katherine A. Kim and Alejandro D. Domínguez-García, “Time-optimal control in dc-dc converters: A maximum principle perspective,” IEEE Applied Power Electronics Conference and Exposition, Fort Worth, TX, 2014, pp. 2804-2808. (IEEE Xplore Link)
IEEE Conference: PECI 2014
Katherine A. Kim, Nathan Dostart, Julia Huynh and Philip T. Krein, “Low-cost solar simulator design for multi-junction solar cells in space applications,” Power and Energy Conference at Illinois, Champaign, IL, 2014, pp. 1-6. (IEEE Xplore Link)
Journal Publication: IEEE Journal of Photovoltaics
Katherine A. Kim, Chenyang Xu, Lei Jin, and Philip T. Krein, A Dynamic Photovoltaic Model Incorporating Capacitive and Reverse-Bias Characteristics, IEEE Journal of Photovoltaics, vol. 3, no. 4. pp. 1334-1341, Oct. 2013. (IEEE Xplore Link)
Dynamic Photovoltaic Modeling Tools
These are resources for the article “A Dynamic Photovoltaic Model Incorporating Capacitive and Reverse-Bias Characteristics” by Katherine A. Kim, Chenyang Xu, Lei Jin, and Philip T. Krein published in IEEE Journal of Photovoltaics.
Experimental Testing
Equipment Used
Keithley 2429 SourceMeter
Agilent 33250A Function Generator
Tektronix MSO4034 Oscilloscope
Computer with Python and GPIB communication
Testing Files
This .zip file contains:
Test 1: I-V Curve
Test1_IV_sweep.py
Test1_IVdatProcess.m
Test 2: Frequency Sweep
Test2_freq_sweep.py
Test2_CSVProcess.m
Test 3: AC Voltage Sweep
Test3_AC_V_sweep.py
Test3_CSV_IVdat_Process.m
Model Parameter Determination
PV_dyn_model_param_extract.m
Dynamic Photovoltaic (PV) Modelin Matlab Simulink
This .zip file contains (Matlab Simulink Version is from 2013):
Poly-Crystalline PV Cell: simulink_PV_dyn_model_poly.mdl
Mono-Crystalline PV Cell: simulink_PV_dyn_model_mono.mdl
Citation Information
If you use the above PV testing or simulation tools or utilize knowledge from the article, please cite our work!
Citation (IEEE format):
Katherine A. Kim, Chenyang Xu, Lei Jin, and Philip T. Krein, A Dynamic Photovoltaic Model Incorporating Capacitive and Reverse-Bias Characteristics, IEEE Journal of Photovoltaics, vol. 3, no. 4. pp. 1334-1341, Oct. 2013.
IEEE Conference: ECCE 2013
Katherine A. Kim and Philip T. Krein, “Hot spotting and second breakdown effects on reverse I-V characteristics for mono-crystalline Si Photovoltaics,” IEEE Energy Conversion Congress and Exposition, Denver, CO, 2013, pp. 1007-1014. (IEEE Xplore Link)
IEEE Conference: COMPEL 2013
Katherine A. Kim and P. T. Krein, “Photovoltaic hot spot analysis for cells with various reverse-bias characteristics through electrical and thermal simulation,” IEEE Workshop on Control and Modeling for Power Electronics, Salt Lake City, UT, 2013, pp. 1-8. (IEEE Xplore Link)
Journal Publication: IEEE Transactions on Power Electronics
Pradeep S. Shenoy, Katherine A. Kim, Brian B. Johnson, and Philip T. Krein, “Differential power processing for increased energy production and reliability of photovoltaic systems,” IEEE Trans. Power Electronics, vol. 28, no. 6. pp. 2968–2979, June 2013. (IEEE Xplore Link)
IEEE Conference: APEC 2013
Katherine A. Kim, Philip T. Krein, Gab-Su Seo and Bo-Hyung Cho, “Photovoltaic AC parameter characterization for dynamic partial shading and hot spot detection,” IEEE Applied Power Electronics Conference and Exposition, Long Beach, CA, 2013, pp. 109-115. (IEEE Xplore Link)
IEEE Conference: PECI 2013
Shibin Qin, Katherine A. Kim, and Robert C. N. Pilawa-Podgurski, “Laboratory emulation of a photovoltaic module for controllable insolation and realistic dynamic performance,” IEEE Power and Energy Conference at Illinois, Champaign, IL, 2013, pp. 23-29. (IEEE Xplore Link)
IEEE Conference: COMPEL 2012
Katherine A. Kim, Pradeep S. Shenoy and Philip T. Krein, “Photovoltaic differential power converter trade-offs as a consequence of panel variation,” IEEE Workshop on Control and Modeling for Power Electronics, Kyoto, 2012, pp. 1-7. (IEEE Xplore Link)
IEEE Conference: COMPEL 2012
Pradeep S. Shenoy, Katherine A. Kim, and Philip T. Krein, “Comparative analysis of differential power conversion architectures and controls for solar photovoltaics,” IEEE Workshop on Control and Modeling for Power Electronics, Kyoto, 2012, pp. 1-7. (IEEE Xplore Link)