Academic Staff

PolyU Scholars Hub

Dr Zaixin Song 宋再新

Research Assistant Professor

CF722
+852 2766 6609
zaixin.song@polyu.edu.hk

PolyU Scholars Hub

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Brief Biosketch

Dr. Song Zaixin is a Research Assistant Professor and doctoral supervisor of the Department of Industrial and Systems Engineering (ISE) at The Hong Kong Polytechnic University (PolyU). He received the B.Eng. and M.Eng. degrees in electrical engineering and automation at Harbin Institute of Technology (HIT), Harbin, China, in 2016 and 2018, respectively. He received the Ph.D. degree majoring electrical engineering at City University of Hong Kong (CityU), Hong Kong, in 2021. In September 2021, he worked as a postdoctoral research fellow in CityU. In July 2022, he worked as a postdoctoral research fellow in Nanyang Technological University, Singapore. Currently, he is working as a Research Assistant Professor in State Key Laboratory of Ultra-precision Machining Technology (SKL-UMT), Department of Industrial and Systems Engineering at The Hong Kong Polytechnic University.

Dr. Song has been working on electric drive and machinery for years. His current research interests include: i) design and control of modern electric drives, ii) smart manufacturing robotics drives, iii) sustainable transport propulsion, iv) renewable power generation and management, v) AI-enabled design and fault diagnosis, and among other related fields. His expertise lies in the compact, robust, and multiphysics design of smart drives for industry applications. Dr. Song has published over 90 research articles and authorised over 20 US and Chinese patents. Dr. Song was the awardee of 2023 Star Reviewer of IEEE Transactions on Energy Conversion, 2022 IEEE Transportation Electrification Committee Prize Ph.D. Thesis Talk Award, and was shortlisted by 2023 Annual World’s Top 2% Scientists Released by Stanford University.

He is currently Member of IEEE, Member of China Electrotechnical Society (CES), Member of IISE, Member of Elsevier Applied Energy Academy, Project Coordinator of SKL-UMT, and serves as a Session Chair of IEEE conferences for many times.

Research Interests

Design and control of modern electric drives
Smart manufacturing robotics drives
Sustainable transport propulsion
Renewable power generation and management
AI-enabled design and fault diagnosis

Professional Services

Professional Memberships:

11/2023-10/2025: Member of China Power Supply Society (CPSS) Youth Working Committee
06/2023-Now: IISE Member
12/2022-Now: Member of IEEE-IES Electrical Machines Technical Committee (EMTC)
07/2022-Now: Member of Hong Kong Institution of Science (HKIS)
11/2021-Now: Member of China Electrical Society (CES)
09/2021-Now: Member of Hong Kong Association of Overseas-Returned Scholars (香港海外學人聯合會)
01/2020-Now: IEEE Member; Member of IEEE Industrial Electronics Society, Power Electronics Society, Power & Energy Society, Industry Applications Society, Magnetics Society, and Transportation Electrification Committee; IEEE Young Professionals
10/2019-Now: Member of China Power Supply Society (CPSS)

Academic Services:

10/2024: Tutorial Session Speaker of "Pursuing High-Overload Electric Motors and Drives for Transportation Electrification - Principle, Technology, and Implementation" in IEEE ITEC-AP 2024 at Xi'an City, China
10/2024: Special Session Chair of "Emerging Electric Drives and Control Strategies for Heavy-duty Transportation Propulsion System" in IEEE ITEC-AP 2024 at Xi'an City, China
01/2024: Associate Editor (AE) of CES Transactions on Electrical Machines and Systems (CES TEMS)
11/2023: Tutorial Session Speaker of "Design, Analysis and Control of Advanced Electric Machines" in IEEE ICEMS 2023 at Zhuhai City, China
11/2023: Special Session Chair of "Novel Motor Drive Technologies for Robots and Autonomous Systems" in IEEE ICEMS 2023 at Zhuhai City, China
10/2023: Special Session Chair of "Emerging Technologies in Electric Propulsion for Advancing Electric Vehicles" in IEEE IECON 2023 at Singapore
06/2023: Special Session Chair of "Emerging Machine Learning-based Technologies in Electric Machines and Power Electronics" in IEEE ISIE 2023 at Helsinki, Finland
03/2023: Special Issue Guest Editor of "Data-Enabled Control and Design Solutions for Electric Machines and Power Electronics in Transportation Electrification" in MDPI journal "Energies"
11/2022: Special Issue Guest Editor of "Energy Management and Storage Systems on Electric Vehicles" in MDPI journal "Energies"
06/2022: Special Session Chair of "Advanced Electric Machine and Drive System Technologies for Flying Electric Vehicles" in IEEE ICIT 2022 at Shanghai City, China
11/2021: Special Issue Guest Editor of "Portable Power Generation and Energy Harvesting with Advanced Electric Devices" in MDPI journal "Energies"
09/2015-Now: Invited Reviewer for recognized journals, including APEN, RSER; Proceeding of the IEEE, IEEE TIE, TPEL, TEC, TTE, TIA, TMAG, OJIES, OAJPE, JESTPE, JESTIE, IEEE Access; IET EPA, RPG; MDPI Energies, Electronics, Machines, Sustainability; among others

Teaching

Teaching Subjects:

ISE544 Supply Chain Management Enabling Technologies, Semester 2
ISE1D01 Learning for a Sustainable Future (Non-Local CAR-D), Semester 3

Teaching Awards:

12/2024: 2023/24 Award for High Student Feedback Questionnaire (SFQ) Score, PolyU
12/2023: 2022/23 Award for High Student Feedback Questionnaire (SFQ) Score, PolyU

Publications

Journal Articles:

Z. Song and Y. Liang, "Overview of High Overload Motors," IEEE Transactions on Industry Applications, vol. 60, no. 6, pp. 8611-8626, Nov.-Dec. 2024, doi: 10.1109/TIA.2024.3429081.
Z. Song and C. Liu, "Electric Machine Design by a Novel Fast Model Predictive Optimization Strategy Treating Dimension-Expensive Problem," IEEE Transactions on Transportation Electrification, vol. 9, no. 2, pp. 2683-2692, June 2023, doi: 10.1109/TTE.2022.3215782.
Z. Song, Z. Dong, W. Wang, S. Liu and C. Liu, "A Novel Modulation Strategy for Asymmetrical Six-Phase Series-Winding PMSM Based on Predictive Controller," IEEE Transactions on Industrial Electronics, vol. 70, no. 6, pp. 5592-5603, June 2023, doi: 10.1109/TIE.2022.3199861.
Z. Song, R. Huang, W. Wang, Z. Dong and C. Liu, "Harmonic Current Control of OW-PMSM for Low-Voltage Traction by Nonlinear Disturbance Rejection With Improved Modulation Scheme," IEEE Transactions on Vehicular Technology, vol. 72, no. 3, pp. 3119-3131, March 2023, doi: 10.1109/TVT.2022.3216543.
Z. Song and C. Liu, "Energy efficient design and implementation of electric machines in air transport propulsion system," Applied Energy, vol. 322, p. 119472, 2022/09/15/ 2022, doi: https://doi.org/10.1016/j.apenergy.2022.119472.
Z. Song, R. Huang, W. Wang, S. Liu and C. Liu, "An Improved Dual Iterative Transient Thermal Network Model for PMSM With Natural Air Cooling," IEEE Transactions on Energy Conversion, vol. 37, no. 4, pp. 2588-2600, Dec. 2022, doi: 10.1109/TEC.2022.3179172.
Z. Song, C. Liu, H. Zhao and R. Huang, "Nonlinear Force and Vibration Analysis of an Interior Permanent Magnet Synchronous Generator With Eccentricity Detection," IEEE/ASME Transactions on Mechatronics, vol. 27, no. 5, pp. 2545-2555, Oct. 2022, doi: 10.1109/TMECH.2021.3118316.
Z. Song, C. Liu, Z. Dong, and R. Huang, "Improved Multi-Stage Decoupling Space Vector Modulation for Asymmetrical Multi-Phase PMSM With Series Winding Connection," IEEE Transactions on Power Electronics, vol. 37, no. 9, pp. 10951-10966, Sept. 2022, doi: 10.1109/TPEL.2022.3163275.
Z. Song, C. Liu, Y. Chen, and R. Huang, "Air-Gap Permeance and Reluctance Network Models for Analyzing Vibrational Exciting Force of In-Wheel PMSM," IEEE Transactions on Vehicular Technology, vol. 71, no. 7, pp. 7122-7133, July 2022, doi: 10.1109/TVT.2022.3167131.
Z. Song, C. Liu, S. Liu, and W. Wang, "Active Harmonic Suppression of Low-Reactance Multiphase Slotless Permanent Magnet Synchronous Machines," IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 2, pp. 1777-1787, April 2022, doi: 10.1109/JESTPE.2021.3050353.
Z. Song, C. Liu, and H. Zhao, "Exact Multiphysics Modeling and Experimental Validation of Spoke-Type Permanent Magnet Brushless Machines," IEEE Transactions on Power Electronics, vol. 36, no. 10, pp. 11658-11671, Oct. 2021, doi: 10.1109/TPEL.2021.3069922.
Z. Song, C. Liu, K. Feng, H. Zhao, and J. Yu, "Field Prediction and Validation of a Slotless Segmented-Halbach Permanent Magnet Synchronous Machine for More Electric Aircraft," IEEE Transactions on Transportation Electrification, vol. 6, no. 4, pp. 1577-1591, Dec. 2020, doi: 10.1109/TTE.2020.2982733.
Z. Song, C. Liu, F. Chai, and H. Zhao, "Modular Design of an Efficient Permanent Magnet Vernier Machine," IEEE Transactions on Magnetics, vol. 56, no. 2, pp. 1-6, Feb. 2020, doi: 10.1109/TMAG.2019.2947137.
Z. Song, C. Liu, and H. Zhao, "Investigation on Magnetic Force of a Flux-Modulated Double-Rotor Permanent Magnet Synchronous Machine for Hybrid Electric Vehicle," IEEE Transactions on Transportation Electrification, vol. 5, no. 4, pp. 1383-1394, Dec. 2019, doi: 10.1109/TTE.2019.2946494.
Z. Song, C. Liu, and H. Zhao, "Quantitative Comparison of Distinct Dual-Stator Permanent Magnet Vernier Machines for Direct-Drive Applications," IEEE Transactions on Magnetics, vol. 55, no. 7, pp. 1-6, July 2019, doi: 10.1109/TMAG.2019.2914718.
Z. Song, Y. Yu, F. Chai, and Y. Tang, "Radial Force and Vibration Calculation for Modular Permanent Magnet Synchronous Machine With Symmetrical and Asymmetrical Open-Circuit Faults," IEEE Transactions on Magnetics, vol. 54, no. 11, pp. 1-5, Nov. 2018, doi: 10.1109/TMAG.2018.2848724.

Conference Papers:

Z. Song, Y. Liang and Y. Chen, "A Novel Compound Hybrid Flux Machine Towards Electric Vehicle Traction," 2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), Chiang Mai, Thailand, 2023, pp. 1-6, doi: 10.1109/ITECAsia-Pacific59272.2023.10372283.
Z. Song and Y. Liang, "Overview of High Overload Motors," 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China, 2023, pp. 2314-2319, doi: 10.1109/ICEMS59686.2023.10343422.
Z. Song, Y. Liang, R. Huang and B. Zhang, "Investigation and Suppression of Cross-Phase-Count Magnetic Field Modulation in Compound Permanent Magnet Vernier Machines," 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China, 2023, pp. 3424-3429, doi: 10.1109/ICEMS59686.2023.10345270.
Z. Song, B. Zhang, W. Wang, Y. Liu and D. Xiao, "Design and Analysis of a Novel Double-Stator Hybrid Flux Machine for Direct-Drive Electric Traction," in 2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), Sendai, Japan, 2023, pp. 1-2, doi: 10.1109/INTERMAGShortPapers58606.2023.10228848.
Z. Song, C. Liu, and H. Zhao, "Improved Torque Density of a Permanent Magnet Brushless AC Motor with Novel Pulse Width Modulation Magnet for Electrified Application," in IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020, pp. 4691-4696, doi: 10.1109/IECON43393.2020.9255217.
Z. Song and C. Liu, "Induced Voltage Optimization of a Direct-Drive Multi-Phase Permanent Magnet Vernier Generator for Tidal Energy Conversion," in 2019 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2019, pp. 1-5, doi: 10.1109/APPEEC45492.2019.8994634.
Z. Song, C. Liu, and H. Zhao, "Comparative Analysis of Slotless and Coreless Permanent Magnet Synchronous Machines for Electric Aircraft Propulsion," in 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019, pp. 1-6, doi: 10.1109/ICEMS.2019.8921494.
Z. Song, Y. Pei, Y. Li, S. Li, and F. Chai, "Analysis of Vibration in Modular Fault-tolerant PMSM under One-phase Open-circuit Fault," in 2018 XIII International Conference on Electrical Machines (ICEM), 2018, pp. 2565-2571, doi: 10.1109/ICELMACH.2018.8507125.

Patents

Chinese Patent: Jincheng Yu, Yixiao Luo, Fei Zhao, Zheng Chai, Wenyuan Mi, Zaixin Song, Kuang Yang, Haiyang Jiang. 复合电机（发明）. China. (Retrieved, Public Code: CN115940467A, Date: 2023-04-07)
Chinese Patent: Zaixin Song, Xuyang Liu, Dong Lei, Yatao Lian, Yongcan Huang. 一种一体化平板直线电机结构（实用新型）. China. (Retrieved, Public Code: CN217883195U, Date: 2022-11-22)
Chinese Patent: Xing Mao, Zaixin Song, Xuyang Liu, Yiming Chen, Yongcan Huang. 一种多功能可能量回收的双向驱动拓扑结构. China. (Retrieved, Public Code: CN115333384A, Date: 2022-11-11)
Chinese Patent: Zaixin Song, Xuyang Liu, Dong Lei, Yatao Lian, Yongcan Huang. 一种一体化平板直线电机结构（发明）. China. (Retrieved, Public Code: CN115208159A, Date: 2022-10-18)
Chinese Patent: Xuyang Liu, Zaixin Song, Dong Lei, Yongcan Huang. 一种环绕聚磁型无铁心永磁直线伺服电机. China. (Retrieved, Public Code: CN114977717A, Date: 2022-08-30)
Chinese Patent: Xuyang Liu, Zaixin Song, Yongcan Huang. 一种增磁型双调制环的磁齿轮复合电机结构. China. (Retrieved, Public Code: CN217427794U, Date: 2022-09-13)
Chinese Patent: Xuyang Liu, Zaixin Song, Yongcan Huang. 一种增磁型双调制环的磁齿轮复合电机结构. China. (Retrieved, Public Code: CN114598090A, Date: 2022-06-07)
Chinese Patent: Xuyang Liu, Zaixin Song, Yongcan Huang. 一种双直驱混合游标执行器电机结构. China. (Retrieved, Public Code: CN114499090A, Date: 2022-05-13)
US Patent: Chunhua Liu, Rundong Huang, Zaixin Song. Motor. Jun 22, 2021. https://scholars.cityu.edu.hk/en/publications/publication(30f56efa-06bf-4868-9878-4af14ec29720).html
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种永磁无刷力矩电动机半开放式强迫风冷散热结构. China. (Retrieved, Public Code: CN112531972A, Date: 2021-03-19)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种永磁无刷力矩电动机半开放式强迫风冷散热结构. China. (Retrieved, Public Code: CN213754250U, Date: 2021-07-20)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种适用于双定子永磁无刷力矩电动机的绕组结构. China. (Retrieved, Public Code: CN112532003A, Date: 2021-03-19)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种适用于双定子永磁无刷力矩电动机的绕组结构. China. (Retrieved, Public Code: CN213754281U, Date: 2021-07-20)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种永磁无刷直流电机的连轴位置反馈结构. China. (Retrieved, Public Code: CN214256053U, Date: 2021-09-21)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种无刷马达用内部磁位置反馈结构. China. (Retrieved, Public Code: CN215300451U, Date: 2021-12-24)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种内埋式复合永磁体式双定子无刷电动机拓扑结构. China. (Retrieved, Public Code: CN214314991U, Date: 2021-09-28)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 一种适用于无刷马达的定子全方位紧固结构. China. (Retrieved, Public Code: CN214543827U, Date: 2021-10-29)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 无刷电机(PMM-S01). China. (Retrieved, Public Code: CN306628832S, Date: 2021-06-22)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 无刷电机(PMM-R01). China. (Retrieved, Public Code: CN306695049S, Date: 2021-07-20)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 无刷电机(PMM-RW02). China. (Retrieved, Public Code: CN306721444S, Date: 2021-07-30)
Chinese Patent: Long Li, Junqiang Liang, Xuyang Liu, Zaixin Song. 新型永磁电机(PMM-SW02). China. (Retrieved, Public Code: CN306760356S, Date: 2021-08-17)