Dr. Wenxin Liu
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Class of '61 Associate Professor

Director, Smart Microgrid and Renewable Technology (SMRT) Research Laboratory

Department of Electrical and Computer Engineering, Lehigh University

Address: 19 West Memorial Drive, Bethlehem, PA 18015
Office: Room 218, Packard Laboratory

Phone: 610-758-6079, Fax: 610-758-6279

Email: wliu@lehigh.edu

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APPOINTMENTS

EDUCATION

RESEARCH INTERESTS

  • Power Systems

  • Power Electronics

  • Control

  • Deep Reinforcement Learning

  • Computational Intelligence

SPONSORED PROJECTS

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   Total external funding (2011-to date): $3,471,868 ($3,253,268 served as the sole investigator)

  1. Principal Investigator, ˇ°Modeling and control of hydrogen generation integrated DC microgrid,ˇ± Idaho National Laboratory,07/2021-12/2022

  2. Principal Investigator, ˇ°Distributed real-time optimal power flow control of PEPDS,ˇ± Office of Naval Research, 04/2021-04/2024

  3. Principal Investigator, ˇ°Effective coordination of highly heterogeneous subsystems in a PEPDS,ˇ± Office of Naval Research, 04/2021-04/2024

  4. Principal Investigator, ˇ°LEGO-like development of complex power electronic systems: research and demonstration,ˇ± Office of Naval Research, 05/2018-04/2021

  5. Principal Investigator, ˇ°Modeling and control of microgrids consisted of multiple parallel-connected distributed energy resources,ˇ± Office of Naval Research, 09/2016-08/2020

  6. Principal Investigator, ˇ°DURIP: Interface upgrade to enable advanced controls of power systems and power electronics,ˇ± Office of Naval Research, 07/2016-07/2017

  7. Investigator, ˇ°Module 5.3: Large-scale network security testing based on an advanced multi-agent systemˇ± in ˇ°An Interdisciplinary approach to integratable, composable and evolvable cybersecurity in energy delivery systems (Phase I),ˇ± Department of Energy, 2015-2017

  8. Co-Investigator with Prof. Mooi Choo Chuah, ˇ°Module 1.3: Identifying unidentifiable attackˇ± in ˇ°An Interdisciplinary approach to integratable, composable and evolvable cybersecurity in energy delivery systems (Phase I),ˇ± Department of Energy, 2015-2017

  9. Principal Investigator, ˇ°Advanced controls of systems of inverters from component-level to system-level,ˇ± Office of Naval Research, 10/2015-09/2016

  10. Principal Investigator, ˇ°BRIGE: A fully distributed multi-agent system based energy management solution for microgrids,ˇ± National Science Foundation, 08/2011-07/2015

  11. Principal Investigator, ˇ°Cooperative optimization and control for better pulsed power load accommodation,ˇ± Office of Naval Research, 01/2013-09/2015

  12. Principal investigator, ˇ°DURIP: Experimental platform for distributed microgrids control solutions,ˇ± Office of Naval Research, 08/2012-07/2013

  13. Principal Investigator, ˇ°A novel fully distributed control solution for naval shipboard power systems,ˇ± Office of Naval Research, 06/2012-05/2013

  14. Principal Investigator, ˇ°Stable fully distributed multi-agent based load management algorithm for microgrids,ˇ± California Energy Commission, 10/2011-09/2012

EDITORIAL POSITIONS

  • Editor, IEEE Transactions on Power Systems, 2019-present. LINK

  • Editor, IEEE Transactions on Industrial Informatics, 2017-present. LINK

  • Editor, IEEE Transactions on Smart Grid, 2016-present. LINK

  • Editor, IEEE Power Engineering Letters, 2019-present. LINK

  • Editor, Journal of Electrical Engineering & Technology, 2018-present. LINK

  • Guest Editor with Josep Guerrero and Jang-Mok Kim, Special Section on ˇ°Systems of Power Converters: Design, Modeling, Control, and Implementation,ˇ± IEEE Transactions on Industrial Informatics. LINK

  • Guest Editor with Il-Yop Chung and Hao Xu, Special Issue on ˇ°Advanced Operation and Control Smart Microgrids,ˇ± Energies. LINK

BOOK

  • Y. Xu, W. Zhang, W. Liu, and W. Yu, ˇ°Distributed Energy Management of Electrical Power Systems (IEEE Press Series on Power Engineering),ˇ± Wiley-IEEE Press, ISBN-13: 978-1119534884, ISBN-10: 1119534887, January 2021. LINK.

SELECTED JOURNAL PUBLICATIONS

     Google Scholar

  1. J. Peng, B. Fan, Q. Yang, and W. Liu, ˇ°Fully distributed discrete-time control of DC microgrids with ZIP loads,ˇ± IEEE System Journal (in press). LINK

  2. Z. Fan, B. Fan, J. Peng, and W. Liu, ˇ°Operation loss minimization targeted distributed optimal control of DC microgrids,ˇ± IEEE System Journal (in press). LINK

  3. J. Khazaei, Z. Tu, A. Asrari, and W. Liu, ˇ°Feedback linearization control of converters with LCL filter for weak AC grid integration,ˇ± IEEE Transactions on Power Systems (in press). LINK

  4. H. Wang, X. Wen, Y. Xu, B. Zhou, J. Peng, and W. Liu, ˇ°Operating state reconstruction in cyber physical smart grid for automatic attack filtering,ˇ± IEEE Transactions on Industrial Informatics (in press). LINK

  5. J. Peng, B. Fan, Q. Yang, and W. Liu, ˇ°Distributed event-triggered control of DC microgrids,ˇ± IEEE System Journal, vol. 15, no. 2, pp. 2504-2514, June 2021. LINK

  6. J. Peng, B. Fan, and W. Liu, ˇ°Voltage-based distributed optimal control for generation cost minimization and bounded bus voltage regulation in DC microgrids,ˇ± IEEE Transactions on Smart Grid, vol. 12, no. 1, pp. 106-116, January 2021. LINK

  7. J. Peng, B. Fan, H. Xu, and W. Liu, ˇ°Discrete-time self-triggered control for DC microgrids with data dropouts and communication delays,ˇ± IEEE Transactions on Smart Grid, vol. 11, no. 6, pp. 4626-4636, November 2020. LINK

  8. J. Khazaei, Z. Tu, and W. Liu, ˇ°Small-signal modeling and analysis of virtual inertia-based PV systems,ˇ± IEEE Transactions on Energy Conversion, vol. 35, no. 2, pp. 1129-1138, June 2020. LINK

  9. B. Fan, S. Guo, J. Peng, Q. Yang, W. Liu, and L. Liu, ˇ°A consensus-based algorithm for power sharing and voltage regulation in DC microgrids,ˇ± IEEE Transactions on Industrial Informatics, vol. 16, no. 6, pp. 3987-3996, June 2020. LINK

  10. J. Duan, H. Xu, W. Liu, J. Peng, and H. Jiang, ˇ°Zero-sum game based cooperative control for onboard pulsed power load accommodation,ˇ± IEEE Transactions on Industrial Informatics, vol. 16, no. 1, pp. 238-247, January 2020. LINK

  11. B. Fan, J. Peng, Q. Yang, and W. Liu, ˇ°Distributed periodic event-triggered algorithm for current sharing and voltage regulation in DC microgrids,ˇ± IEEE Transactions on Smart Grid, vol. 11, no. 1, pp. 577-589, January 2020. LINK

  12. B. Fan, S. Guo, Q. Yang, and W. Liu, ˇ°Decentralized adaptive control design for single-phase parallel-inverter systems,ˇ± IET Renewable Power Generation, vol. 13, no. 15, pp. 2752-2761, November 2019. LINK

  13. C. Wang, J. Duan, B. Fan, Q. Yang, and W. Liu, ˇ°Decentralized high-performance control of DC microgrids,ˇ± IEEE Transactions on Smart Grid, vol. 10, no. 3, pp. 3355-3363, May 2019. LINK

  14. B. Fan, J. Peng, J. Duan, Q. Yang, and W. Liu, ˇ°Distributed control of multiple-bus microgrid with paralleled distributed generators,ˇ± IEEE/CAA Journal of Automatica Sinica, vol. 6, no. 3, pp. 1-9, May 2019. LINK

  15. C. Wang, K. Zhang, J. Xiong, Y. Xue, and W. Liu, ˇ°A coordinated compensation strategy for module-mismatch of CHB-PV systems based on improved LS-PWM and reactive power injection,ˇ± IEEE Transactions on Industrial Electronics, vol. 66, no. 4, pp. 2825-2836, April 2019. LINK

  16. J. Duan, C. Wang, H. Xu, W. Liu, Y. Xue, J. Peng, and H. Jiang, ˇ°Distributed control of inverter-interfaced microgrids based on consensus algorithm with improved transient performance,ˇ± IEEE Transactions on Smart Grid, vol. 10, no. 2, pp. 1303-1312, March 2019. LINK

  17. J. Peng, B. Fan, J. Duan, Q. Yang, and W. Liu, ˇ°Adaptive decentralized output-constrained control of single-bus DC microgrids,ˇ± IEEE/CAA Journal of Automatica Sinica, vol. 6, no. 2, pp. 424-432, March 2019. LINK

  18. W. Liu, J. Kim, C. Wang, W. Im, L. Liu, and H. Xu, ˇ°Power converters based advanced experimental platform for integrated study of power and controls,ˇ± IEEE Transactions on Industrial Informatics, vol. 14, no. 11, pp. 4940-4952, November 2018. LINK

  19. J. Duan, H. Xu, and W. Liu, ˇ°Q-learning based damping control of wide-area power systems under cyber uncertainties,ˇ± IEEE Transactions on Smart Grid, vol. 9, no. 6, pp. 6408-6418, November 2018. LINK

  20. Y. Xu, Z. Li, J. Zhang, Z. Fei, and W. Liu, ˇ°Real-time compressive sensing based control strategy for a multi-area power system,ˇ± IEEE Transactions on Smart Grid, vol. 9, no. 5, pp. 4293-4302, September 2018. LINK

  21. B. Fan, C. Wang, Q. Yang, W. Liu, and G. Wang, ˇ°Performance guaranteed control of flywheel energy storage system for pulsed power load accommodation,ˇ± IEEE Transactions on Power Systems, vol. 33, no. 4, pp. 3994-4004, July 2018. LINK

  22. C. Wang, K. Zhang, J. Xiong, Y. Xue, and W. Liu, ˇ°An efficient modulation strategy for cascaded photovoltaic systems suffering from module-mismatch,ˇ± IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 6, no. 2, pp. 941-954, June 2018. LINK

  23. J. Duan, C. Wang, H. Xu, W. Liu, J. Peng, and H. Jiang, ˇ°Distributed control of inverter-interfaced microgrids with bounded transient line currents,ˇ± IEEE Transactions on Industrial Informatics, vol. 14, no. 5, pp. 2052-2061, May 2018. LINK

  24. Y. Xu, J. Hu, W. Gu, and W. Liu, ˇ°Real-time distributed control of battery energy storage systems for security constrained DC-OPF,ˇ± IEEE Transactions on Smart Grid, vol. 9, no. 3, pp. 1580-1589, May 2018. LINK

  25. G. Wang, X. Zhang, H. Wang, J. Peng, H. Jiang, Y. Liu, Z. Xu, and W. Liu, ˇ°Robust planning of electric vehicle charging facilities with advanced evaluation method,ˇ± IEEE Transactions on Industrial Informatics, vol. 14, no. 3, pp. 866-876, March 2018. LINK

  26. W. Zhang, Y. Xu, S. Li, M. Zhou, and W. Liu, ˇ°A distributed dynamic programming-based solution for load management in smart grids,ˇ± IEEE Systems Journal, vol. 12, no. 1, pp. 402-413, March 2018. LINK

  27. H. Wang, H. Yi, J. Peng, G. Wang, Y. Liu, H. Jiang, and W. Liu, ˇ°Deterministic and probabilistic forecasting of photovoltaic power based on deep convolutional neural network,ˇ± Energy Conversion and Management, vol. 153, 409-422, December 2017. LINK

  28. H. Wang, R. Zhang, J. Peng, G. Wang, Y. Liu, H. Jiang, and W. Liu, ˇ°GPNBI-inspired MOSFA for Pareto operation optimization of integrated energy system,ˇ± Energy Conversion and Management, vol. 151, pp. 524-537, November 2017. LINK

  29. W. Liu, J. Guerrero, and J. Kim, ˇ°Guest editorial special section on systems of power converters: design, modeling, control, and implementation,ˇ± IEEE Transactions on Industrial Informatics, vol. 13, no. 5, pp. 2631-2633, October 2017. LINK

  30. W. Im, C. Wang, W. Liu, L. Liu, and J. Kim, ˇ°Distributed virtual inertia based control of multiple photovoltaic systems in autonomous microgrid,ˇ± IEEE/CAA Journal of Automatica Sinica, vol. 4, no. 3, pp. 512-519, July 2017. LINK

  31. W. Zhang, Y. Ma, W. Liu, S. Ranade, and Y. Luo, ˇ°Distributed optimal active power dispatch under constraints for smart grids,ˇ± IEEE Transactions on Industrial Electronics, vol 64, no. 6, pp. 5084-5094, June 2017. LINK

  32. J. Duan, H. Xu, and W. Liu, ˇ°Event-triggered and self-triggered wide-area damping control designs under uncertainties,ˇ± Transactions of the Institute of Measurement and Control, vol. 40, no. 7, pp. 2259-2269, April 2017. LINK

  33. W. Zhang, W. Liu, C. Zang, and L. Liu, ˇ°Multi-agent system based integrated solution for topology identification and state estimation,ˇ± IEEE Transactions on Industrial Informatics, vol. 13, no. 2, pp. 714-724, April 2017. LINK

  34. W. Im, C. Wang, L. Tan, W. Liu, and L. Liu, ˇ°Cooperative controls for pulsed power load accommodation in a shipboard power system,ˇ± IEEE Transactions on Power Systems, vol. 31, no. 6, pp. 5181-5189, November 2016. LINK

  35. L. Tan, Q. Yang, W. Im, and W. Liu, ˇ°Adaptive critic design based cooperative control for pulsed power loads accommodation in shipboard power system,ˇ± IET Generation, Transmission & Distribution, vol. 10, no. 11, pp. 2739-2747, 2016. LINK

  36. Y. Ma, W. Zhang, W. Liu, and Q. Yang, ˇ°Fully distributed social welfare optimization with line flow constraint consideration,ˇ± IEEE Transactions on Industrial Informatics, vol. 11, no. 6, pp. 1532-1541, December 2015. LINK

  37. W. Zhang, Y. Xu, W. Liu, C. Zang, and H. Yu, ˇ°Distributed online optimal energy management for smart grids,ˇ± IEEE Transactions on Industrial Informatics, vol. 11, no. 3, pp. 717-727, June 2015. LINK

  38. Y. Xu, W. Zhang, and W. Liu, ˇ°Distributed dynamic programming based approach for economic dispatch in smart grids,ˇ± IEEE Transactions on Industrial Informatics, vol. 11, no. 1, pp. 166-175, February 2015. LINK

  39. W. Zhang, W. Liu, X. Wang, L. Liu, and F. Ferrese, ˇ°Online optimal generation control based on constrained distributed gradient algorithm,ˇ± IEEE Transactions on Power Systems , vol. 30, no. 1, pp. 35-45, January 2015. LINK

  40. L. Liu, H. Li, Y. Xue, and W. Liu, ˇ°Decoupled active and reactive power control for large scale grid-connected photovoltaic systems using cascaded modular multilevel converters,ˇ± IEEE Transactions on Power Electronics, vol. 30, no. 1, pp. 176-187, January 2015. LINK

  41. L. Liu, H. Li, Y. Xue, and W. Liu, ˇ°Reactive power compensation and optimization strategy for grid-interactive cascaded photovoltaic systems,ˇ± IEEE Transactions on Power Electronics, vol. 30, no. 1, pp. 188-202, January 2015. LINK

  42. W. Zhang, W. Liu, X. Wang, L. Liu, and F. Ferrese, ˇ°Distributed multiple agent system based online optimal reactive power control for smart grids,ˇ± IEEE Transactions on Smart Grid, vol. 5, no. 5, pp. 2421-2431, September 2014. LINK

  43. Y. Xu, W. Zhang, W. Liu, X. Wang, F. Ferrese, C. Zang, and H. Yu. ˇ°Distributed subgradient-based coordination of multiple renewable generators in a microgrid,ˇ± IEEE Transactions on Power Systems, vol. 29, no. 1, pp. 23-33, January 2014. LINK

  44. W. Zhang, Y. Xu, W. Liu, F. Ferrese, and L. Liu, ˇ°Fully distributed coordination of multiple DFIGs in a microgrid for load sharing,ˇ± IEEE Transactions on Smart Grid, vol. 4, no. 2, pp. 806-815, June 2013. LINK

  45. Y. Xu, W. Zhang, W. Liu, and F. Ferrese, ˇ°Multiagent based reinforcement learning for optimal reactive power dispatch,ˇ± IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews, vol. 42, no. 6, pp. 1742-1751, November 2012. LINK

  46. W. Liu, L. Liu, I. Chung, D.A. Cartes, and W. Zhang, ˇ°Modeling and detecting the stator winding fault of permanent magnet synchronous motors,ˇ± Simulation Modeling Practice and Theory, vol. 27, pp. 1-16, September 2012. LINK

  47. Y. Xu, W. Liu, and J. Gong, ˇ°Multi-agent based load shedding algorithm for power systems,ˇ± IEEE Transactions on Power Systems, vol. 26, no. 4, pp. 2006-2014, November 2011. LINK

  48. I. Chung, W. Liu, K. Schoder, and D.A. Cartes, ˇ°Integration of a bi-directional DC-DC converter model into a real-time system simulation of a shipboard medium voltage DC System,ˇ± Electric Power Systems Research, vol. 81, no. 4, pp. 1051-1059, April 2011. LINK

  49. Y. Xu and W. Liu, ˇ°Novel multi agent based load restoration algorithm for microgrids,ˇ± IEEE Transactions on Smart Grid, vol. 2, no. 1, pp. 140-149, March 2011. LINK

  50. I. Chung, W. Liu, D.A. Cartes, S. Cho, and H. Kang, ˇ°Controller optimization for bidirectional power flow in medium-voltage DC power systems,ˇ± Journal of Electrical Engineering & Technology, vol. 6, no. 6, pp. 750-759, 2011. LINK

  51. I. Chung, W. Liu, D.A. Cartes, and S. Moon, ˇ°Control parameter optimization for multiple distributed generators in a microgrid using particle swarm optimization,ˇ± European Transactions on Electrical Power, vol. 21, no. 2, pp. 1200-1216, March 2011. LINK

  52. W. Liu, L. Liu, I. Chung, and D.A. Cartes, ˇ°Real-time particle swarm optimization based parameter identification applied to permanent magnetic synchronous machine,ˇ± Applied Soft Computing, vol. 11, no. 2, pp. 2556-2564, March 2011. LINK

  53. J. Gong, V.V. Prabhu, and W. Liu, ˇ°Simulation-based performance comparison between assembly lines and assembly cells with real-time distributed arrival time control system,ˇ± International Journal of Production Research, vol. 49, no. 5, pp. 1241-1253, March 2011. LINK

  54. W. Liu, I. Chung, L. Liu, S. Leng, and D.A. Cartes, ˇ°Real-time particle swarm optimization based current harmonic cancellation,ˇ± Engineering Applications of Artificial Intelligence, vol. 24, no. 1, pp. 132¨C141, February 2011. LINK

  55. I. Chung, W. Liu, D.A. Cartes, E.G. Collins, and S. Moon, ˇ°Control methods for inverter-interfaced distributed generators in a microgrid system,ˇ± IEEE Transactions on Industry Applications, vol. 46, no 3, pp. 1078-1088, May/June 2010. LINK

  56. L. Liu, W. Liu, D.A. Cartes, and I. Chung, ˇ°Slow coherency and angle modulated particle swarm optimization based islanding of large scale power systems,ˇ± Advanced Engineering Informatics, vol. 23, no. 1, pp. 45-56, January 2009. LINK

  57. L. Liu, W. Liu, and D.A. Cartes, ˇ°Particle swarm optimization based parameter identification applied to permanent magnetic synchronous machine,ˇ± Engineering Applications of Artificial Intelligence, vol. 21, no. 7, pp. 1092-1100, October 2008. LINK

  58. W. Liu, J. Sarangapani, G.K. Venayagamoorthy, L. Liu, D.C. Wunsch II, M.L. Crow, and D.A. Cartes, ˇ°Decentralized neural network-based excitation control of large-scale power systems,ˇ± International Journal of Control, Automation, and Systems, vol. 5, no. 5, pp. 526-538, October 2007. LINK

  59. W. Liu, G.K. Venayagamoorthy, and D.C. Wunsch II, ˇ°A heuristic dynamic programming based power system stabilizer for a turbogenerator in a single machine power system,ˇ± IEEE Transactions on Industry Applications, vol. 41, no. 5, pp. 1377-1385, September 2005. LINK

  60. L. Tang, W. Liu, and J. Liu, ˇ°A neural network model and algorithm for the hybrid flow shop scheduling problem in a dynamic environment,ˇ± Journal of Intelligent Manufacturing, vol. 16, no. 3, pp. 361-370, June 2005. LINK

  61. W. Liu, G.K. Venayagamoorthy, and D.C. Wunsch II, ˇ°Design of an adaptive neural network based power system stabilizer,ˇ± Neural Networks, vol. 16, no. 5-6, pp. 891-898, July 2003. LINK

HONORS

  • Best Editor Award, Journal of Electrical Engineering and Technology, 2019

  • Class of '61 Professorship, Lehigh University, 2019-2021

  • Ambassador, OP4200 RCP/HIL System, OPAL-RT Technologies, 2018-Present

  • P.C. Rossin Assistant Professorship, P.C. Rossin College of Engineering and Applied Science, Lehigh University, 2016-2018

  • Early Career Award, University Research Council, New Mexico State University, 2013

  • Dean's Excellence Award, College of Engineering, New Mexico State University, 2012

  • ConocoPhillips Faculty Fellow, College of Engineering, New Mexico State University, 2011-2012

  • Dean's Fellowship, College of Engineering and Computing, University of Missouri-Rolla, 2001-2004

  • Finalist of Best Paper Award, IEEE International Conference on Information and Automation, Ningbo, Zhejiang, China, July 31-August 4, 2016

  • Finalist of Best Paper Award, The 5th Annual IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems, Shenyang, China, June 8-12, 2015

TEACHING EXPERIENCE

  • ECE 136: Electromechanics, fall 2015, fall 2016, fall 2017, fall 2018, fall 2019, fall 2020

  • ECE/CREG 257: Senior Lab I, fall 2018, fall 2019

  • ECE/CREG 258: Senior Lab II, spring 2019, spring 2020, spring 2021

  • ECE 350/450: Power Electronics, spring 2017

  • ECE 321/421: Introduction of Power Systems, fall 2014, spring 2018, fall 2020

  • ECE 329/429: Power System Modeling & Computation, spring 2015, spring 2016

  • EE 109: The Engineering of How Things Work, fall 2011, fall 2012 (at New Mexico State University)

  • EE 391: Introduction to Electric Power Engineering, spring 2012, spring 2013, fall 2013, spring 2014 (at New Mexico State University)

  • EE 493/543: Power Systems III, spring 2010, spring 2013 (at New Mexico State University)

  • EE 531: Power Network Modeling & Computation, fall 2009 (Distance Education-DE), fall 2010, fall 2011 (DE), spring 2014 (at New Mexico State University)

  • EE 532: Power System Stability and Transients, spring 2011 (at New Mexico State University)

  • EML 3014: Dynamic Systems, spring 2007 (at Florida State University)

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Last updated: 06/08/2021

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