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清华大学电机系

清华大学电机系本科生

清华大学电机系研究生

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清华大学能源互联网创新研究院

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Current Location: Home > faculties > Xiao Xi

Xiao Xi

Professor

Research Direction

AC motor control and servo drive systems, robot drive and control technology, power electronics, wave energy conversion system, energy storage system and micro-grid

Department of Electrical Engineering, Tsinghua University Beijing, 100084, P. R. China

xiao_xi@tsinghua.edu.cn

010-62797029

  • Biography
  • Teaching
  • Research Project
  • Publications
  • Social service
  • 1997/9-2000/12, Department of Technical Cybernetics, Saint-Petersburg State Technical University, Russia, Doctor of Philosophy in Electrical Engineering (Sponsored by Chinese Scholarship Council)

  • 1995/9-1997/7, Department of Technical Cybernetics, Saint-Petersburg State Technical University, Russia, Master of Engineering in Electrical Engineering (Sponsored by the State Education Commission of China)

  • 1990/10-1995/7, Department of Technical Cybernetics, Saint-Petersburg State Technical University, Russia, Bachelor of Engineering in Electrical Engineering (Sponsored by the State Education Commission of China)

  • 1990/5-1990/10, Science and Technology Experimental Class, Shanghai Jiaotong University, China.

  • 2011/12-present, Vice Dean of the Department of Electrical Engineering, Tsinghua University, Beijing, China.

    2010/9-present, Doctoral Supervisor, Department of Electrical Engineering, Tsinghua University, Beijing, China.

  • 2008/4-2012/4, Director of Institute of Power Electronics and Electrical Machine System, Department of Electrical Engineering, Tsinghua University, Beijing, China.

  • 2004/5-2004/08, Visiting Scholar at Institute National Poly-technique de Toulouse, France.

  • Teaching Achievement 2nd Prize of Tsinghua University, 2015

  • Patent Excellence Award (1st Prize) for “Determination methodology for Composite Energy Storage system capacity in autonomous micro-grids” by Guangxi Power Grid, 2015

  • Electro-technical Individual Technology Achievement Award by Zhengtai Foundation and China Electro-technical Society, 2014

  • Science and Technology Achievement Award (1st Prize) for “High performance control of permanent magnet synchronous motors and servo drives” by China Electro-technical Society, 2013

  • New Century Excellent Talents in University, Award by Ministry of Education of China, 2013

  • Young Scholar Award by Delta Environmental and Educational Foundation, 2009

  • Science and Technology Achievement Award (3rd Prize) for “Control device for high dynamic servo motor of numerical control textilemachine” by Beijing Science and Technology Society, 2008 2nd Prize in the 5th Beijing Youth Teachers' Teaching Skills Competition, 20072003/07- -present, Assistant Professor, Associate Professor, Professor, Department of Electrical Engineering, Tsinghua University, Beijing, China.2001/05-2003/06, Post-Doctoral Fellow, Department of Electrical Engineering, Tsinghua University, Beijing, China.

  1. Undergraduates Courses

  • Electric Drives and Control

  • Power Electronics Fundamentals

  • Design of Electric Drive Systems

  • Special topics in power electronics

2. Postgraduates Courses

  • Energy Storage Technology and Its Applications in Renewable Generation Systems


  1. Research Interests

  • AC motor control and servo drive systems,

  • robot drive and control technology

  • power Economics

  • wave energy conversion system

  • energy storage system and micro-grid

2.Selected Academic Funds and Industry Projects

  • 2016/1 – 2019/12, Control strategy research of permanent magnet synchronous motor with flexible and variable inertia load, Funding Organization: National Natural Science Foundation of China, No. Project: 51577095,

  • 2012/1 – 2015/12, The research of key problems in direct drive wave energy converter combined with energy storage system, Funding Organization: National Natural Science Foundation of China, No. Project: 51177084

  • 2007/1 – 2009/12, Control strategy and demagnetization analysis method based on dynamic monitoring of permanent magnets for PMSM, Funding Organization: National Natural Science Foundation of China, No. Project: 50607010

  • 2009/1 – 2012/12, Study on Mechanism of integrated energy storage system for micro-grid, Funding Organization: National Natural Science Foundation of China, No. Project: sub-task 4 of 50823001

  • 2012/1 – 2015/6, Study on control technology of composite energy storage system in micro-grids, Funding Organization: Ministry of science and technology, National High Tech Research and development program(“863” program), No. Project: sub-task 5 of 2012AA050217

  • 2007/10 – 2010/10, Research and development of extremely low speed technology for servo system, Funding Organization: Ministry of science and technology, National High Tech Research and development program(“863” program), No. Project: 2007AA04Z216

  • 2014/6 – 2015/12, Research on Key Techniques of motor drive system for high voltage breaker and its prototype, Funding Organization: Pinggao Group of State Grid, No. Project: 20142000609

  • 2011/9 – 2014/9, Servo technology joint research center, Funding Organization: Dorna Technology Co., Ltd, No. Project:20112000670

  • 2015/8 – 2016/3, Development of instantaneous voltage control technology for motor driving using electrolytic capacitor less inverter, Funding Organization: Mitsubishi Heavy Industries, Ltd, No. Project: 20153000266,

  • 2011/9 – 2013/12, Research on wave power system with energy storage, Funding Organization: Delta Environmental and Educational Foundation, No. Project: DREK2011001


Prof. Xi Xiao is the author of 2 books. He has published more than 100 papers which have had over 160 citations in Web of Science. He hold more than 20 invention patents of China.


  1. Books

  • Xiao Xi, Sun Kai, Zheng Zedong, Chapter “Electric Drives”, China Electric Power Encyclopedia, China Electric Power Press, Beijing, 2014

  • Xiao Xi, Chapter 4.5“Servo System”, China Electrical Engineering Canon, China Electric Power Press, Beijing, 2010

  • Xing Yan, Xiao Xi and Wang Lina, the Basis of Power Electronics Technology, China Machine Press, Beijing, 2009

  • Li Yongdong, Xiao Xi and Gao Yue, High Power Multi-level Convertors, Science Press, Beijing, 2005

2.Selected International Journal Papers Since 2010

  • Feng W, Sun K, Guan Y, Guerrero J, Xiao X, Active Power Quality Improvement Strategy for Grid-connected Microgrid Based on Hierarchical Control, IEEE Transactions on Smart Grid, 2016, n99, DOI: 10.1109/TSG.2016.2633298 ( in Press)

  • Tian P, Xiao X, Chen Y, Jing T, Huang X, Zhi N, The key technologies and analysis of research state of microgrid community. Resources, Conservation and Recycling, 2016 ( in Press)

  • Xiao X, Huang X, Kang Q, A Hill Climbing Method-Based MPPT for Direct-Drive Wave Energy Converters. IEEE Transactions on Industrial Electronics, 2016,v63,n1,257-267

  • Tian P, Xiao X, Wang K, Ding R, A Hierarchical Energy Management System Based on Hierarchical Optimization for Micro-grid Community Economic Operation. IEEE Transactions on Smart Grid, 2016,v7,n5,2230-2241

  • Wu H,Chen L, Xing Y, Xiao X, Xu P, Two-transformer-based full-bridge soft-switching DC-DC converter with improved characteristics, IET Power Electronics, 2015, v8, n12, 2537-2545

  • Nie Z, Xiao X, M Richard,et al., Emulation and Control Methods for Direct Drive Linear Wave Energy Converters. IEEE Transactions on Industrial Informatics, 2013, v9, n2, 790-798

  • Nie Z, Xiao X, Kang Q, SMES-Battery energy storage system for conditioning outputs from direct drive linear wave energy converters, IEEE Transactions on Applied Superconductivity, 2013, v23, n3, 5000705

  • Zhang H, Nie Z, Xiao X, Aggarwal R, Kang Q, Design and simulation of SMES system using YBCO tapes for direct drive wave energy converters. IEEE Transactions on Applied Superconductivity, 2013, v23, n3, 5700574

  • Zhu H, Xiao X, Li Y,Torque Ripple Reduction of the Torque Predictive Control scheme for Permanent Magnet Synchronous Motors. IEEE Transactions on Industrial Electronics, 2012, v59, n2, 871-877

  • Xiao X, Kang Q&, Zheng Z, Zhu Z, A Modulation Strategy for DC/AC Converter Based on Voltage Limitation Criterion. International Review of Electrical Engineering, 2012, v7, n5, 5365-5375

  • Yi D, Yuan J, Liu H, Shen Y, Lin Y, Nan C, Xiao X, He J, Influence of Al2O3 additive on the dielectric behavior and energy density of Ba0.5Sr0.5TiO3 ceramics, Journal of Electroceramics, 2012, v29, n2, 95-98

  • Cheng B, Lin Y, Deng W, Cai J, Lan J, Nan C, Xiao X, He J, Dielectric and nonlinear electrical behaviors of Ce-doped CaCu3Ti4O12 ceramics, Journal of Electroceramics, 2012, v29, n4, 250-253

  • Xiao X, Yi H, Kang Q, Nie J, A two-level energy storage system for wind energy systems. Procedia Environmental Sciences, volume 12, Part A, 2012:130-136

  • Deng W, Nie J, Xiao X, Yuan J, Zhang B, Lin Y. Effect of Bi2O3-B2O3-CuO additives on dielectric properties and energy storage of BaTiO3 ceramics. Key Engineering Materials, 2012,v512-515, p1146-1149

  • Xiao X, Chen CM, Zhang M,Dynamic permanent magnet flux estimation of permanent magnet synchronous machines, IEEE Transactions on Applied Superconductivity, 2010, v20, n3, 1085-1088

  • Xiao X, Chen CM, Reduction of torque ripple due to demagnetization in PMSM using current compensation, IEEE Transactions on Applied Superconductivity, 2010, v20, n3, 1068-1071

3.Selected Conference Papers Since 2010

  • Youshuang Ding, Xi Xiao. Adaptive Sliding Mode Control of flexible load driven by motors, IEEE International Conference on Electrical Machines and Systems 2016, Chiba, Japan

  • Youshuang Ding, Xi Xiao. Speed Control and Resonance Suppression of Flexible Joint System based on singular perturbation method and Kalman Filter, the 42th Annual Conference of the IEEE Industrial Electronics Society, IECON 2016, Florence, Italy.

  • Zhi, Na; Zhang, Hui; Xiao, Xi , Switching system stability analysis of DC microgrids with DBS control, IEEE Applied Power Electronics Conference and Exposition-APEC, 2016-May, p.3338-3345

  • Zhang, Lei; Shi, Haixu; Sun, Kai; Xiao, Xi; Lu, Xiaonan , A smooth switch method for battery energy storage systems between Vf mode and PQ mode by utilizing electromagnetic relay, IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016, p 3702-3707

  • Zhan, Xiaohai; Wu, Hongfei; Xing, Yan; Ge, Hongjuan; Xiao, Xi; A high step-up bidirectional isolated dual-active-bridge converter with three-level voltage-doubler rectifier for energy storage applications, IEEE Applied Power Electronics Conference and Exposition-APEC, 2016-May, p. 1424-1429

  • Feng, Wei; Sun, Kai; Guan, Yajuan; Guerrero, Josep M.; Xiao, Xi. The frequency fluctuation impact analysis for droop controlled grid-connecting inverter in microgrid. 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016, p 3715-3722

  • Feng, Wei; Sun, Kai; Guan, Yajuan; Guerrero, Josep M.; Xiao, Xi. A harmonic current suppression control strategy for droop-controlled inverter connected to the distorted grid. 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015, p 525-532

  • Chen, Liqun; Wu, Hongfei; Xing, Yan; Xiao, Xi. Performance evaluation of a 1kW non-isolated high step-up/step-down bidirectional converter for distributed battery storage system. IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015

  • Xiao X, Ding Y, Yang Q, A new motor speed extraction method based on the combination of smoothing and polynomial fitting filter, 17th IEEE International Conference on Electrical Machines and Systems, ICEMS 2014, 2712-2715

  • Kang Q, Xiao X, Xing J Zhu J, A design of active damper for the deployment of solar arrays using PMSM, IEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014, 6940779

  • Huang X, Xiao X, Ding R, An improved power sharing strategy for hybrid energy storage system, IEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014, 6940671

  • Ding Y, Xiao X, Research on control strategies of flexible load driven by PMSM, IEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014 6940817

  • Shi H, Wang K, Xiao X, Sun K, Capacitor voltage balancing of a three-level bi-directional buck-boost converter for battery energy storage system, 17th IEEE International Conference on Electrical Machines and Systems, ICEMS 2014, 325-329

  • Sun K, Shi Y, Huang L, Li Y, Xiao X, A 2-D fuzzy logic based MRAS scheme for sensorless control of interior permanent magnet synchronous motor drives with cyclic fluctuating loads, 29th Annual IEEE Applied Power Electronics Conference and Exposition(APEC), 2014, p2475-2481

  • Wang W, Xiao X, Ding Y, An adaptive incremental predictive current control method of PMSM, 15th European Conference on Power Electronics and Applications, EPE 2013, 6631813

  • Xiao X, Xu Q, Tao J, Tian P, An improved method of interior permanent magnet synchronous motor parameter identification based on particle swarm optimization, 15th European Conference on Power Electronics and Applications, EPE 2013, 6631826

  • Nie J, Xiao X, Nie Z, A Novel Three-Level Changeover Circuit of Super-Capacitor Bank for Energy Storage Systems, the 38th Annual Conference of the IEEE Industrial Electronics Society, IECON 2012, 143-148

  • Xiao X, Nie J, Nie Z, A Universal Two-Level Changeover Circuit of Super-Capacitor Bank for Energy Storage Systems, the 38th Annual Conference of the IEEE Industrial Electronics Society, IECON 2012, 179-183

  • Wang W, Xiao X, Research on predictive control for PMSM based on online parameter identification, , the 38th Annual Conference of the IEEE Industrial Electronics Society, IECON 2012, 1982-1988

  • Xiao X, Nie J, Nie Z, Optimizing the distribution of inner electrodes for large energy storage multi-layer capacitors. IEEE Power Electronics and Motion Control Conference, IPEMC 2012, 396-401

  • Nie Z, Xiao X, Yi H, Kang Q, Direct Drive Wave Energy Converters Integrated with a Composite Energy Storage System, IEEE International Conference on Electrical Machines and Systems, Beijing, 2011

  • Kang Q, Xiao X, Hu Yi H, Nie Z, Energy Management in Grid Connected PV Systems with Super-capacitor Energy Storage, The International Conference on Electrical Machines and Systems, Beijing,2011

  • Xiao X, Yi H, Kang Q, Nie J, Research of energy storage system for power control in wind farm, International Conference on Energy and Environment, 2011,VolII,p285-288

  • Kang Q, Xiao X, Wu G, Study on electric pitch control of induction motor with redundancy design, IEEE International Conference on Electrical Machines and Systems, 2010, p521-525

  • Zhu H, Xi Xiao X,Li Y, Permanent magnet synchronous motor current ripple reduction with harmonic back-EMF compensation, IEEE International Conference on Electrical Machines and Systems 2010, p1094-1097

  • Wang W, Xiao X, Cheng C, Application of speed feed-forward compensation in digital voltage regulation for three-stage excitation brushless DC generator, IEEE International Conference on Electrical Machines and Systems,2010, p1657-1660

  • Zhu Z, Xiao X, Kang Q, Clone selection-based parameter identification applied to permanent magnet synchronous motors, IEEE International Conference on Electrical Machines and Systems 2010, p1852-1855

  • Zhu H, Xiao X, Li Y, PI type dynamic decoupling control scheme for PMSM high speed operation,25th Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2010, p1736-1739

4.Selected Chinese Journal Papers since 2010

  • Wang W, Xiao X, Adaptive incremental predictive control method for current of PMSM based on online identification of inductance, Electric Machines and Control, 2014, v18, n2, 75-82

  • Xiao X, Bai N, Kang Q, Nie Z, A review of the development of wave power system and the research on direct-drive wave power system, Transactions of China Electro-technical Society, 2014, v29, n3, 1-11

  • Wang W, Xiao X, An improved PI regulator for current loop of PMSM taking one-step-delay into consideration, Proceedings of the Chinese Society of Electrical Engineering, 2014, v34, n12, 1882-1888

  • Xiao X, Xu Q, Wang Y, Shi Y, Parameter identification of interior permanent magnet synchronous motors based on genetic algorithm, Transactions of China Electro-technical Society, 2014, v29, n3, 21-26

  • Xiao X, Wang W, Lu Z, Filtering algorithm of speed for PMSM based on incremental Kalman filter, Electric Machines and Control, 2014, v18, n10, 104-111

  • Wang W, Xiao X, Liu H, Expanding parameter stability region for incremental predictive control strategy of current, Transactions of China Electro-technical Society, 2014, v29, n3, 50-56

  • Wang W, Xiao X, Parameters design and performance analysis of current incremental predictive algorithm for PMSM, Electric Machines and Control, 2013, v17, n12, 98-105

  • Xiao X, Wang Y, Xu Q, Shi Y, An improved method of induction motor parameter identification based on genetic algorithm, Transactions of China Electro-technical Society, 2013, v28, n1, 331-335

  • Tian P, Xiao X, Huang X, Wang K, Determination methodology for energy storage system capacity in autonomous micro-grid, Transactions of China Electro-technical Society, 2013, v28, n1, 36-42

  • Tian P, Xiao X, Ding R, A capacity configuring method of composite energy storage system in autonomous multi-micro-grid, Automation of Electric Power Systems, 2013, v37, n1, 168-173

  • Wang W, Xiao X, Ding Y, An improved predictive current control method for permanent magnet synchronous motors, Transactions of China Electro-technical Society, 2013, v28, n3, 50-55

  • Kang Q, Xiao X, Nie Z, An optimal control strategy for output power of the directly driven wave power generation system, Automation of Electric Power Systems, 2013, v37, n3, 24-29

  • Kang Q, Xiao X, Nie Z, Power smoothing in directly driven wave power generation system with supercapacitor as energy storage unit, Transactions of China Electro-technical Society, 2013, v28, n1, 43-49

  • Wang W, Xiao X, A current control method for permanent magnet synchronous motors with high dynamic performance, Proceedings of the Chinese Society of Electrical Engineering, 2013, v33, n21, 117-123

  • Wang W, Xiao X, Incremental predictive algorithm for the current loop in a PMSM to improve dynamic performance, Journal of Tsinghua University, 2013, v53, n7, 1019-1024

5.Authorized Patent

  • Xiao Xi, Wang Weihua, Ding Youshaung, An improved method for permanent magnet synchronous motor current loop regulator, Chinese invention patent number: CN201310460685

  • Xiao Xi, Wang Weihua, Ding Youshaung, An incremental model reference adaptive algorithm for Inductance identification of permanent magnet synchronous motor, Chinese invention patent number: CN201310461579

  • Tian Peigen, Xiao Xi, Huang Xiuqiong, Ding Ruoxing, Determination methodology for Composite Energy Storage system capacity in autonomous micro-grids , Chinese invention patent number: CN201310007059

  • Xiao Xi, Nie Zanxiang, Kang Qing, A direct-drive wave power generation energy storage device and its control method, Chinese invention patent number: CN201110337109

  • Xiao Xi, Chai Jianyun, Yu Kang, Kang Qing, A redundancy control system and method for variable pitch system of wind turbine, Chinese invention patent number: CN200910090287

  • Xiao Xi, A novel PWM method based on minimum common mode voltage injection, Chinese invention patent number: CN200810223022.9.

  • Xiao Xi, Zhang Meng, Method and device of on-line estimation of Permanent-magnet Flux Linkage Ripple for PMSM, Chinese invention patent number: CN200710176726.0

  • Xiao Xi, Wu E, A low speed measure method based on double encoders, Chinese invention patent number: CN200710175259.X.


  • Member of the IEEE

  • Director member of China Power Supply Society

  • Director member of the Beijing Power Electronics Society

  • Editorial Board Member of “journal of Electrical Engineering”

  • Editorial Board Member of “China Electric Power Encyclopedia”

  • Editorial Board Member of “China Electrical Engineering Canon”

  • Member of Workgroup for IEEE P2030.3 Standard for Test Procedures for Electric Energy Storage Equipment and Systems for Electric Power Systems Applications

  • Member of Organizing Committee of the 13th IEEE International Conference on Electrical Machines and Systems

  • Organizing Committee Chairman and Session Chair of the 14th IEEE International Conference on Electrical Machines and Systems

  • Member of Editing and Publishing Committee and session chair of the 17th IEEE International Conference on Electrical Machines and Systems

  • Secretary-General of Organizing Committee of the 3rd Symposium on Power Electronics & Electrical Drives of China, 2009