CONTACT

Personal ◆ 7whitedays(at)gmail(dot)com

Workplace ◆ s2ng.baek(at)lge(dot)com

Academic ◆ s-baek(at)dove(dot)kuee(dot)kyoto-u(dot)ac(dot)jp

RESEARCH INTERESTS

Chaos, Network Dynamics, Communication System, Complex Communication, Energy Management System, Decentralized Control, Algorithmic Design, AI-Boosted Embedded System, Robotics, Semiconductors

WORK EXPERIENCES

2025.03.04 – Present
Senior Research Engineer / R&D / SW Application, Embedded System

HVAC Solutions, LG Electronics, Changwon, Republic of Korea

2021.08.02 – 2024.08.05
Postdoctoral Researcher

Energy Systems Laboratory, Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea

2021.04.01 – 2021.05.31
Program-Specific Researcher (Postdoctoral Fellow)

Laboratory of Advanced Electrical Systems Theory, Department of Electrical Engineering, Kyoto University, Kyoto, Japan

2020.01.24 – 2020.12.31
System Engineer / R&D / ML, Computer Vision

Rutilea, Kyoto, Japan

2018.04.01 – 2019.11.25
Internship System Engineer / Web / Backend, Frontend

Kyoto Innovation, Kyoto, Japan

EDUCATIONS

2021.03.23
PhD in Electrical Engineering
— Kyoto University, Department of Electrical Engineering

Lab ◆ Laboratory of Advanced Electrical Systems Theory
Dissertation ◆ “Dynamical Analysis and Decentralized Control of Power Packet Network”
Committee ◆ Prof. Takashi Hikihara (chair), Prof. Shinji Doi, and Prof. Ken Umeno

2018.03.26
Master Degree in Electrical Engineering
— Kyoto University, Department of Electrical Engineering

Lab ◆ Laboratory of Advanced Electrical Systems Theory
Thesis ◆ “Model of Distributed Control and Analysis of Power Transmission on Power Packet Distribution Network”
Supervisor ◆ Prof. Takashi Hikihara

2016.03.24
Bachelor Degree in Electrical and Electronic Engineering
— Kyoto University, Electrical and Electronic Engineering

Thesis ◆ “A Study on Modeling of Distribution Voltage Profile Using Data on Power Supply-Demand Density”
Supervisor ◆ Prof. Takashi Hikihara

HONORS AND AWARDS

2020.04.01 - 2021.03.31
Epson International Scholarship
2019.01.09
Best Paper Award

Korea-Japan Joint Workshop on Complex Communication Sciences (KJCCS)

2018.05.17
Student Presentation Award

Annual conference of the Institute Systems, Control and Information Engineers (ISCIE)

2011.03.02 - 2016.03.24
Korea-Japan Joint Government Scholarship Program

JOURNAL PUBLICATIONS

2024.10.16
S. Baek, S. Hahm, Y. -J. Kim, and J. P. S. Catalão, “Security-constrained P2P Energy Trading Strategy via Price-based Regularization of ADMM in a Distribution Network,” IEEE Access, vol. 12, pp. 152972–152988, 2024. doi:10.1109/ACCESS.2024.348150

Fig.1. Overall schematic diagram of the proposed security-constrained P2P energy trading strategy. Fig.8. Optimal bidding energies and prices with complete regularization by the DSO and consideration of bilateral trading weights and resulting network profiles on the IEEE 33-node test system: (a) trading energy, (b) energy price biddings between sellers and buyers, (c) selling prices, (d) buying prices, (e) bus voltages, and (f) power flow in branches.

2021.04.01
S. Baek (corresp. auth.), H. Ando, and T. Hikihara, “Decentralized Algorithms for Consensus-Based Power Packet Distribution,” Nonlinear Theory and Its Applications, IEICE, vol. 12, no. 2, pp. 181–193, 2021. doi:10.1587/nolta.12.181

Fig.1. Layout of a power packet network (PPN). Using the store-and-forward method, the power routers deliver the power packets from the supply side to the demand side. Fig.4. Decentralized algorithms of the (a) bottom-up method and (b) top-down method for a power router. The algorithm is divided into three loops: termination of packet transmission, packet forwarding, and packet storing. The bottom-up method and top-down method employ the different loops of packet forwarding and packet storing, according to each of the communication logics. Here, the parentheses () indicate the transition conditions, and the superscript-(\('\)) denotes the updated values when transitioned.

2020.03.05
S. Baek (corresp. auth.), H. Ando, and T. Hikihara, “Consensus-Based Distribution of Power Packets and Decentralized Control for Routing,” AIP Chaos: An Interdisciplinary Journal of Nonlinear Science, vol. 30, no. 3, pp. 033115, 2020. doi:10.1063/1.5134735

\({x}(K+1) = {P}{x}(K) - D{\epsilon}(K) + [I(K), 0, \dots, 0]^{\rm T}\)
Eq.2. Bio-Inspired voltage dynamics of storage nodes \(x\). Fig.2. Packet distribution on ring network. Nodes from 0 to 20 indicate power routers, and the packet transmission on each path between routers is bidirectional. Fig.3. Variation of node voltages over time. Intermittent bursts in node 1 occur because electric charges are supplied when the voltage level \(x_1\) drops below \(x_{th}\).

PATENTS

TBD
Multimodal AI-based Arc Fault Detection Device (AFDD)

PAPERS in PREPARATION

TBD
“Structural Stability of Energy Flow based on Fractal Topology”

PEER-REVIEWED INTERNATIONAL CONFERENCE PROCEEDINGS

2019.12.02 - 2019.12.06
S. Baek, H. Ando, and T. Hikihara, “Power Packet Distribution Problem on Switching Topology with Demanding Nodes through Consensus-Based Approach,” in Proceedings of NOLTA’19, no. 3PM-2D1, pp. 177–178, (IEICE, Kuala Lumpur, Malaysia, 2019).
2019.01.06 - 2019.01.09
S. Baek, and H. Ando, and T. Hikihara, “Consensus-Based Distributed Control of Power Packet Distribution Network,” in Proceedings of JKCCS’19, no. A-4, pp. 8– 11, (IEICE, Pyeongchang, Korea, 2019).
2018.09.02 - 2018.09.06
S. Baek, H. Ando, and T. Hikihara, “Automata Modeling on Power Packet Distribution Network for Power Flow Analysis,” in Proceedings of NOLTA’18, no. C1L-A3, pp. 464-467, (IEICE, Tarragona, Spain, 2018).

OTHER CONFERENCE PROCEEDINGS AND PRESENTATIONS

2024.01
S. Baek, and Y. -J. Kim, “Heat Pump : Grid Flexible Resource ‘P2H’,” KIEE Magazine, vol. 73, no. 1, pp. 32-37, Jan. 2024, (in Korean).
2023.07.12 - 2023.07.15
S. Baek, and Y. -J. Kim, “ADMM-Based P2P Energy Trading Strategy for Prosumer Benefits and System Reliability in Distribution System,” in Proc. KIEE Conference, pp. 856-857, Pyeongchang, Republic of Korea, 2023, (in Korean).
2022.07.13 - 2022.07.16
S. Baek, N. -Y. Kim, S. -W. Yim, and S. -D. Yu, S. -W. Hwang, H. Lee., and Y. -J. Kim, “Optimal Planning and Economic Analysis of Microgrid Based on Energy Self-Sufficiency Rate,” in Proc. KIEE Conference, pp. 9-11, Gwangju, Republic of Korea, 2022, (in Korean).
2019.03.19 - 2019.03.22
Y. Sangenya, S. Baek, and T. Hikihara, “Structure Dependence of Power Output on Power Packet Distribution Network,” in Proc. 2019 IEICE General Conference, vol. N-2-8, p. 292, Tokyo, Japan, 2019, (in Japanese).
2018.06.01
S. Baek, H. Ando, and T. Hikihara, “A Study on Distributed Control of Power Packet Distribution Network based on Consensus Model,” in IEICE Technical Report, Nonlinear Problems, vol. 118, no. 76, CCS2018-1, pp. 1–5, 2018, (in Japanese).
2018.05.16 - 2018.05.18
S. Baek, H. Ando, and T. Hikihara, “A Study on Decentralized Operations of Power Routers with Consensus in Power Packet Distribution Network,” in Proc. 62nd Annual Conference of the Institute of Systems, Control and Information Engineers (ISCIE), no. 212-5, Kyoto, Japan, 2018, (in Japanese).
2018.03.20 - 2018.03.23
S. Katayama, S. Baek, and T. Hikihara, “A Numerical Study of Power Line Usage for Energy on Demand Control by Power Packet,” in Proc. 2018 IEICE General Conference, vol. N-2-1, p. 252, Tokyo, Japan, 2018, (in Japanese).
2017.05.23 - 2017.05.25
S. Baek, and T. Hikihara, “Evaluation for Transmission of Power and Information Tag by Power Packet in Multi-stage Power-router,” in Proc. 61st Annual Conference of the Institute of Systems, Control and Information Engineers (ISCIE), no. 133-5, Kyoto, Japan, 2017, (in Japanese).
2017.03.22 - 2017.03.25
S. Baek, and T. Hikihara, “Evaluation for Transmission of Power and Information Tag by Regulating Payload of Power Packet,” in Proc. 2017 IEICE General Conference, vol. NBS-1-2, p. S–52, Nagoya, Japan, 2017, (in Japanese).
2016.01
Y. Susuki, S. Baek, Ota Y, and T. Hikihara, “Computer Simulation of Distribution Voltage Profile Using a Nonlinear ODE,” in IEICE Technical Report, Nonlinear Problems, vol. 116, no. 215, pp. 15–20, 2016, (in Japanese).
2016.05.25 - 2016.05.27
S. Baek, Y. Susuki, Y. Ota, and T. Hikihara, “Analysis of Distribution Voltage Profile by ODE Model Incorporated with Power Demand/Supply Data,” in Proc. 60th Annual Conference of the Institute of Systems, Control and Information Engineers (ISCIE), no. 156-2, Kyoto, Japan, 2016, (in Japanese).

TEACHING EXPERIENCES

2019.Q1, Winter
Teaching Assistant
— Kyoto University, Department of Electrical Engineering
◆ Introduction to Nonlinear Science-E2, Lectured by Prof. Maciej Ogorzalek

A diverse and deep understanding in nonlinear science such as chaos theory and fractal theory, was studied. The assistant supported the preparation of the lecture and the evaluation of reports and works done by students, also providing a direct lecture to students for the numerical simulations.

2016.04 - 2016.09
Teaching Assistant
— Kyoto University, Department of Electrical Engineering
◆ Oscillations and Waves Theory, Lectured by Prof. Takashi Hikihara

As an assistant, a diverse and technical understanding in the theory of the lecture was deepened and improved than before as a student. The assistant supported the preparation of the lectures/reports, the response to the questions by students, and the evaluation of reports and works done by students.

CERTIFICATES

2025.09.05
ADsP (Advanced Data Analytics Semi-Professional)

LANGUAGES

2026.01
JPN ◆ JLPT N1 (CEFR B2)

Native/Full Professional Proficiency

2025.11
ENG ◆ TOEIC Speaking 140 (Level 7)
2021.01
ENG ◆ TOEFL iBT 83 (CEFR B2)

Professional Working Proficiency

2016.01
JPN ◆ JLPT N1

MEMBERSHIPS

2023.06 - 2024.06
Member

IEEE Power and Energy Society (PES)

2021.07 - 2025.07
Member

The Korean Institute of Electrical Engineers (KIEE)

2016.04 - 2021.03
Student Member

Institute of Electronics, Information and Communication Engineers (IEICE)

2016.04 - 2021.03
Student Member

Institute of Systems, Control and Information Engineers (ISCIE)

COMMUNITY SERVICES

2016.04 - 2017.03
Association President

Kyoto University Korean Student Association

2015.04 - 2016.03
PR

Kansai Korean International Student Association (KKIA)

COMPUTER SKILLS

  • Coding Fluency
    Python, C, PHP, HTML, CSS, JavaScript, SQL, Java

  • Tools Fluency
    Embedded System Coder, Linux System, MATLAB, MySQL, Ansys (Engineering Simulation Software)

  • What I Build
    Scientific Analysis, Machine Learning (ML), Reinforcement Learning (RL), Parallel Computation, Numerical Simulation, Decentralization, Web Service, Mobile Application, Server, Database, Computer Vision, Automation

REFERENCES

  • Prof. Takashi Hikihara
    Department of Electrical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
    Contact ◆ hikihara(dot)takashi(dot)2n(at)kyoto-u(dot)ac(dot)jp

  • Prof. Shinji Doi
    Department of Electrical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
    Contact ◆ doi(at)kuee(dot)kyoto-u(dot)ac(dot)jp