Li Xin

Biography

Li Xin received his B.E. and Ph.D. degrees from Nanjing University of Aeronautics and Astronautics in 2012 and 2018, respectively. From 2019 to 2020, he worked as a Technical Research Engineer at Company, engaged in R&D related to advanced power electronics technologies. From 2020 to 2022, he conducted postdoctoral research at Nanyang Technological University, Singapore. In August 2022, he joined the School of Electrical Engineering at Southeast University as an Associate Research Fellow and Doctoral Supervisor. He was supported by the 2024 Jiangsu Provincial Youth Science and Technology Talent Support Program and selected as a Southeast University Zhishan Youth Scholar (Level A) in 2024. He serves as a committee member of the Academic Committee and Youth Committee of the Jiangsu Provincial Power Supply Society, a technical committee member of the 4th International Conference on Power Engineering (ICPE 2023), and an IEEE member. He has chaired session meetings at the 2023 China Power Supply Society Annual Conference and the IEEE PEAS Conference, and served as a Guest Editor for the SCI-indexed journals Fractal and Fractional (JCR Q1) and Electronics (JCR Q3). He has led one sub-project of a National Key R&D Program, one sub-project of a National Key Research and Development Plan, one National Natural Science Foundation of China (NSFC) project, one Jiangsu Provincial Natural Science Foundation project, two State Grid headquarters projects, two projects from the State Grid Electric Power Research Institute, and one project from the Jiangsu Provincial Key Laboratory of Smart Grid. He has participated in several projects including a Singapore-Norway joint project, projects from Jiangsu Electric Power Research Institute, and major projects of the Jiangsu Provincial Key Laboratory of Smart Grid. He has received three Best Paper or Best Presentation Awards at international and domestic conferences. He has published over 30 papers, including 11 first-author or corresponding-author papers in international journals, all in SCI Q1. He holds 9 patents in China and Singapore. Under his supervision, undergraduate and graduate students have won the First Prize in the Final of the "Infineon GaN" Cup 10th University Power Electronics Application Design Competition (organized by the China Power Supply Society) and the Third Prize in the Jiangsu Division of the 3rd University Electrical and Electronic Engineering Innovation Competition (organized by the China Electrotechnical Society). He has also guided students in completing one major university-level SRTP project.

Publications

1. Xin Li, Pengfei Yao, Jianing Li, Peili Yuan, Jiangfeng Wang, Wu Chen, Yi Tang. Multifrequency Model of Dual Active Bridge Resonant Converters With Phase-Shift Control. IEEE Transactions on Power Electronics, 2025, 40(9): 13007-13022. (SCI Q1)

2. Xin Li, Jianing Li, Peili Yuan, Jiangfeng Wang, Wu Chen, Shiqi Kan, Jian Ai. Reduced Order Equivalent Circuit Model of Series Resonant Converter Considering the Interaction between Resonant Elements. IEEE Transactions on Power Electronics, 2025, Early Access Article. (SCI Q1)

3. Xin Li, Yingjie Chen, Weike Yu, Longquan Li, Pengfei Yao, Jianxi Lan, Jian Ai, Wu Chen. Virtual Inductance and DC Boosting Control Based Low Voltage Ride-Through Method for Doubly-Fed Variable-Speed Pumped Hydro Storage Units. IEEE Transactions on Power Electronics, 2026, 41(4): 6125-6135. (SCI Q1)

4. Xin Li, Yuxi Liu, Haoxiang Sun, Peili Yuan, Jianing Li, Sunhua Huang, Wu Chen, Jian Ai. Analysis and Suppression of the Beat Frequency Oscillation in Cascaded Power System with Front-End Buck Converter. IEEE Transactions on Power Electronics, 2026, Early Access Article. (SCI Q1)

5. Xin Li, Xinbo Ruan, Qian Jin, Mengke Sha, Chi K Tse, "Approximate discrete-time modeling of dc--dc converters with consideration of the effects of pulse width modulation", IEEE Trans. Power Electron., vol. 33, pp. 7071–7082, 2018. (SCI Q1)

6. Xin Li, Xinbo Ruan, Qian Jin, Mengke Sha, Chi K Tse, "Small-signal models with extended frequency range for dc-dc converters with large modulation ripple amplitude", IEEE Trans. Power Electron., vol. 33, pp. 8151–8163, 2018. (SCI Q1)

7. Xin Li, Xinbo Ruan, Xiaoling Xiong, Mengke Sha, Chi K Tse, "Approximate discrete-time small-signal models of dc-dc converters with consideration of practical pulse width modulation and stability improvement methods", IEEE Trans. Power Electron., vol. 34, pp. 4920–4936, 2019. (SCI Q1)

8. Xin Li, Xinbo Ruan, Xiaoling Xiong, Qian Jin, Chi K Tse, "Stability Issue of Cascaded Systems with Consideration of Switching Ripple Interaction", IEEE Trans. Power Electron., vol. 34, pp. 7040–7052, 2019. (SCI Q1)

9. Xin Li, Yiming Zhang, Shuxin Chen, Xin Zhang, and Yi Tang, "Pulsewidth-modulator-based transfer function measurement method for variable frequency-controlled half- and full-bridge converters", IEEE Trans. Power Electron., vol. 36, pp. 9711–9716, 2021. (SCI Q1)

10. Xin Li, Yiming Zhang, Shuxin Chen, Yi Tang, Xin Zhang, "Small-signal modeling for phase-shift controlled resonant converters", IEEE Trans. Ind. Electron., vol. 68, pp. 11026–11034, 2020. (SCI Q1)

11. Xin Li, Yiming Zhang, Shuxin Chen, Xin Zhang, and Yi Tang, "Coils relative position transient issue in wireless power transfer systems", IEEE Trans. Ind. Electron., vol. 69, pp. 2621–2630, 2022. (SCI Q1)

12. Xin Li, Yiming Zhang, Shuxin Chen, Xin Zhang, and Yi Tang, "Small-signal models of resonant converter with consideration of different duty-cycle control schemes", IEEE Trans. Power Electron., vol. 36, pp. 13234–13247, 2021. (SCI Q1)

13. Xin Li, Yiming Zhang, Shuxin Chen, Xin Zhang, and Yi Tang, "General multi-frequency small-signal model for resonant converters", IEEE Trans. Power Electron., vol. 37, pp. 3892–3912, 2022. (SCI Q1)

14. Xinbo Ruan, Xiong Chun, Xin Li (Corresponding), Xiaoling Xiong, Qian Jin, Mengke Sha, Chi K Tse, "Reconsideration of loop gain and its measurement of dc-dc converters", IEEE Trans. Power Electron., vol. 34, pp. 6906–6921, 2019. (SCI Q1)

15. Yueyin Wang, Wu Chen, Zhan Shen, Xiao Yu, Haozhe Jin, Siyi Luo, Zewei Hao,Xin Li(Corresponding). Origin Analysis and Mitigation Method of Voltage Oscillation Occurred Inside the Winding of Medium-Voltage Medium-Frequency Transformer. IEEE Transactions on Power Electronics, 2025, 40(1): 1974-1990. (SCI Q1)

16. Yueyin Wang, Wu Chen, Xin Li (Corresponding), et al., "Origin Analysis and Mitigation Method of Voltage Oscillation Occurred Inside the Winding of Medium-Voltage Medium-Frequency Transformer", IEEE Trans. Power Electron., 2024, early access. (SCI Q1)

17. Xin Li, Xinbo Ruan, "Analysis of an unstable phenomenon related to the different turn-on time between the subsystems in cascaded systems", IEEE ECCE, pp. 2658–2663, 2015.

18. Xin Li, Xinbo Ruan, "A generic and accurate frequency-domain model for buck, boost and buck-boost converters", IEEE ECCE, pp. 3760–3766, 2014. (International Conference)

19. Xin Li, Yiming Zhang, Shuxin Chen, Xin Zhang, Yi Tang, "Input current ripple reduction of switching capacitor converter by dividing the output capacitor", IEEE ECCE Asia, 2020. (International Conference)

20. Xin Li, Yiming Zhang, Shuxin Chen, Yi Tang, Xin Zhang, "Reduced-order equivalent circuit model of series resonant converter considering the interaction between resonant elements", IEEE ECCE, 2021. (International Conference)

21. Xin Li, Yiming Zhang, Yi Tang, "A Full Load Range Soft-Switching Inductive Power Transfer System", IEEE ECCE, 2022. (International Conference)

22. Xin Li, Yiming Zhang, Yi Tang, Wu Chen, "Small-Signal Model for Dual Active Bridge Resonant Converters", IEEE PEAS, 2023. (International Conference)

Patents

1. Magnetic couplers with magnetic pillars for flux guidance, mechanical positioning and support in high-power wireless charging applications/wireless power transfer. WO 2023/063889 A2.

2. A Wirelessly Linked Supply Network with Load Insensitive Bus Voltage and Flexible Configuration. Singapore Provisional Patent Application No. 10202105616S.

3. Power allocation method for a dual DC-port asymmetric three-level grid-connected inverter. CN 202211611695.8

4. Fractional-turn transformer core with wide adjustable ratio and fractional-turn transformer. CN 202310824408.X

5. Modulation and control method for modular multilevel DC transformer. CN 202310187608.9

6. Flexible interconnection topology and control method for multi-port AC/DC hybrid distribution network. CN 202211606355.6

7. A DC power flow controller and its control method. CN 202211541732.2

8. Grid-forming control method and medium for multi-port integrated photovoltaic-storage converter. CN 117856642B

9. Analysis method, system, and equipment for parameter correlation in planar transformer aging prediction. CN 202410743139.9

Research

Research Projects

1. Grid-connection adaptability control and grid-forming control technology for photovoltaic power generation equipment in multi-send scenarios. Sub-project of National Science and Technology Major Project—"Key Technologies and Equipment for New Topology Control of Main Power Source Photovoltaic Power Generation". 2024.11–2027.12, Sub-project Lead.

2. Key technology research and equipment development for DC conversion and overall control of high-power offshore DC wind turbines. Sub-project of National Key R&D Program. 2023.12–2027.11, Sub-project Lead.

3. Research on unified small-signal modeling and order reduction theory for resonant converters with high-order resonant networks and complex modulation schemes. National Natural Science Foundation of China (Young Scientists Fund). 2024.01–2026.12, PI.

4. Multi-frequency modeling technology for resonant converters. Jiangsu Provincial Natural Science Foundation. 2023.09–2026.08, PI.

5. Construction and flexible regulation equipment development for "semi-DC" AC distribution stations. State Grid Headquarters Project. 2023.10–2025.12, Project Lead.

6. Design and development of communication protocol and IGBT drive circuit for low-cost three-level inverters. NARI Technology Co., Ltd. 2022.12–2023.09, PI.

7. Research on grid adaptability control technology for AC excitation systems and RTDS test technical services. NARI Technology Co., Ltd. 2024.09–2025.01, PI.

8. Unified multi-frequency small-signal modeling technology for resonant converters. Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment. 2022.12–2023.12, PI.

9. Research and equipment development for key control equipment of domestically controllable synchronous condensers. Sub-project of State Grid Headquarters Project. 2022.10–2026.06, Sub-project Lead.

10. Development of a 1.5 MW ultra-high-power-density wireless charging system for electric ships. Singapore Maritime Institute and Research Council of Norway. 2019.01–2023.01, Participant.

11. Development of a 3 kW long-distance wireless charging system for multi-electric ships. Sea Forrest, Singapore. 2021.01–2021.06, Participant.

12. Key technology R&D for high-efficiency wide-load wireless charging/discharging devices for electric vehicles. Jiangsu Provincial Key Laboratory of Smart Grid. 2022.12–2023.12, Participant.

Academic Services

1. Guest Editor, Electronics (2023)

2. Guest Editor, Fractal and Fractional (2023)

3. Technical Committee Member, 4th International Conference on Power Engineering (ICPE 2023)

4. Committee Member, Youth Working Committee, Jiangsu Provincial Power Supply Society (2023)

5. Committee Member, Academic Working Committee, Jiangsu Provincial Power Supply Society (2023)

6. Session Chair, 3rd IEEE International Conference on Power Electronics Technology and Applications (IEEE PEAS 2022)

Conference Presentations

1. Invited Report at the 9th Youth Scholars Frontier Symposium on Electrical Engineering, December 2023.

2. Invited Report at the 16th Youth Salon of the China Electrotechnical Society, May 2023.

Awards

1. Best Paper Award, 22nd Annual Conference of the China Power Supply Society, 2017.

2. Best Paper Award, 5th IEEE International Electrical and Energy Conference, 2022.

3. Best Presentation Award, IEEE PEAS 2023.

4. First Prize (as the sole advisor), "Infineon GaN" Cup 10th University Power Electronics Application Design Competition, organized by China Power Supply Society (Provincial/Ministerial Level).

5. Third Prize (as the sole advisor), Jiangsu Division, 3rd University Electrical and Electronic Engineering Innovation Competition, organized by China Electrotechnical Society (Provincial/Ministerial Level).

Teaching

1. Electronic Technology (Undergraduate)

2. Electric Network Theory (Graduate)

3. Power Electronics Technology and Applications (Graduate)

Graduates:

Currently supervising 7 master's students, one SRTP innovation group, and 2 undergraduate thesis projects. Serving as class advisor for the 2023 Wu Jianxiong Honors Class and as undergraduate mentor for three consecutive cohorts. Previously supervised one university-level major SRTP team, two innovation competition teams, and 6 undergraduate thesis projects.