People
XU Yunjian 徐云建
Associate Professor
yjxu@mae.cuhk.edu.hk
TEL: 852 - 3943 1333
Room 301A, 3/F, Academic Building No. 1

Yunjian Xu is an assistant professor at the Mechanical and Automation Engineering department, the Chinese University of Hong Kong (CUHK). He was an assistant professor at the Singapore University of Technology and Design (SUTD) in 2013-2017, and a postdoctoral scholar at the Center for the Mathematics of Information of the California Institute of Technology (Caltech) in 2012-2013.

He completed his PhD degree at the Laboratory for Information and Decision Systems of Massachusetts Institute of Technology (MIT) in 2012, under the supervision of Professor John N. Tsitsiklis. He obtained bachelor and master degrees in Electrical Engineering from Tsinghua University, Beijing, China. Dr. Xu was a recipient of the MIT-Shell Energy Fellowship.

Research Interests
  • Stochastic optimal control
  • Deep reinforcement learning
  • Power system optimization and control
  • Mechanism design for electricity markets
Teaching
2019/2020
EEEN2030 Energy and Environmental Economics and Management
EEEN4060 Energy Distribution
2018/2019
EEEN3020 Energy Utilization and Human Behaviour
EEEN2030 Energy and Environmental Economics and Management
Publications

Journal Papers 

  1. J. Jin and Y. Xu*, Shortest path based deep reinforcement learning for EV charging routing under stochastic traffic condition and electricity prices, accepted to IEEE Internet of Things Journal, 2022.
  2. T. Zhao, H. Yi, M. Chen, C. Wu and Y. Xu, Efficient and robust equilibrium strategies of utilities in day-ahead market with load uncertainty, accepted to IEEE Systems Journal, 2022.
  3. L. Hao, J. Jin, and Y. Xu*, Laxity differentiated pricing and deadline differentiated threshold scheduling for a public electric vehicle charging station, IEEE Trans. on Industrial Informatics, 18(9), pp. 6192-6202, 2022.
  4. J. Jin and Y. Xu*, Optimal policy characterization enhanced proximal policy optimization for multi-task scheduling in cloud computing, IEEE Internet of Things Journal, 9(9), pp. 6418-6433, 2022.
  5. L. Hao, Y. Xu*, and L. Tong, Asymptotically optimal index policies for deadline scheduling with processing rate limits, IEEE Trans. on Automatic Control, 67(1), pp. 236-250, 2022.
  6. J. Jin and Y. Xu*, Optimal policy characterization enhanced actor-critic approach for electric vehicle charging scheduling in a power distribution network, IEEE Trans. on Smart Grid, 12(2), pp. 1416-1428, 2021.
  7. J. Jin, L. Hao, Y. Xu*, J. Wu, and Q.-S. Jia, Joint scheduling of deferrable demand and storage with random supply and processing rate limits, IEEE Trans. on Automatic Control, 66(11), pp. 5506-5513, 2021.
  8. Q. Huang, Y. Xu*, and C. Courcoubetis, Strategic storage operation in wholesale electricity markets: A networked Cournot game analysis, IEEE Trans. on Network Science and Engineering, 8(2), pp. 1789-1801, 2021.
  9. J. Jin and Y. Xu*, Segregated linear decision rules for distributionally robust control with linear dynamics and quadratic cost, IEEE Systems Journal, 15(1), pp. 355-364, 2021.
  10. J. Jin, Y. Xu*, and Z. Yang, Optimal deadline scheduling for electric vehicle charging with energy storage and random supply, Automatica, 119, pp. 109096, 2020.
  11. Q. Huang, Y. Xu*, and C. Courcoubetis, Stackelberg competition between merchant and regulated storage investment in wholesale electricity markets, Applied Energy, 264, pp. 114669, 2020.
  12. S. Chen, Z. Gao, Z. Yang, Y. Xu, and R. Cheng, A game theoretic approach to phase balancing by plug-in electric vehicles in the smart grid, IEEE Trans. on Power Systems, 35(3), pp. 2232-2244, 2020.
  13. Q. Huang, Y. Xu*, and C. Courcoubetis, Financial incentives for joint storage planning and operation in energy and regulation markets, IEEE Trans. on Power Systems, 34(5), pp. 3326-3339, 2019.
  14. T. Wang, Y. Xu*, C. Withanage, L. Lan, S. Ahipasaoglu, and C. Courcoubetis, A fair and budget-balanced incentive mechanism for energy management in buildings, IEEE Trans. on Smart Grid, 9(4), pp. 3143- 3153, 2018.
  15. J. Jin, Y. Xu*, Y. Khalid, and N. Khan, Optimal Operation of Energy Storage with Random Renewable Generation and AC/DC Loads, IEEE Trans. on Smart Grid, 9(3), pp. 2314-2326, 2018.
  16. Q. Huang, Y. Xu*, and C. Courcoubetis, Market Mechanisms for Cooperative Operation of Pricemaker Energy Storage in a Power Network, IEEE Trans. on Power Systems, 33(3), pp. 3013-3028, 2018.
  17. Z. Yu, Y. Xu, and L. Tong, Deadline scheduling as restless bandits, IEEE Trans. on Automatic Control, 63(8), pp. 2343-2358, 2018.
  18. Y. Xu and L. Tong, Optimal Operation and Economic Value of Energy Storage at Consumer Locations, IEEE Trans. Automatic Control, 62(2), pp. 792-807, 2017. (A preliminary version was presented at the 53rd IEEE CDC, December 2014.)
  19. E. Bitar* and Y. Xu*, Deadline Differentiated Pricing of Deferrable Electric Loads, IEEE Trans. on Smart Grid, 8(1), pp. 13-25, 2017.
  20. J. Jin and Y. Xu*, Optimal Storage Operation under Demand Charge, IEEE Trans. on Power Systems, 32(1), pp. 795-808, 2017.
  21. Y. Xu and S. Low, An Efficient and Incentive Compatible Mechanism for Wholesale Electricity Markets, IEEE Trans. Smart Grid, 8(1), pp. 128-138, 2017.
  22. S. Kwon, Y. Xu*, and N. Gautam, Meeting Inelastic Demand in Systems with Storage and Renewable Sources, IEEE Trans. Smart Grid, 8(4), pp. 1619-1629, 2017. (A preliminary version was presented at the 5th IEEE SmartGridComm, November 2014.)
  23. Y. Xu and K. Ligett, Commitment in First-Price Auctions, Economic Theory, pp. 1-41, 2017.
  24. R. Thirumalaivasan, M. Janaki, and Y. Xu*, Kalman Filter Based Detection and Mitigation of Subsynchronous Resonance with SSSC, IEEE Trans. on Power Systems, 32(2), pp. 1400-1409, 2017.
  25. R. Thirumalaivasan, Y. Xu*, and M. Janaki, Power Control with Z-Source Converter based Unified Power Flow Controller, IEEE Trans. on Power Electronics, 32(12), pp. 9413-9423, 2017.
  26. T. Wang, Y. Xu*, S. Ahipasaoglu, and C. Courcoubetis, Ex-post Max-min Fairness of Generalized AGV Mechanisms, IEEE Trans. on Automatic Control, 62(10), pp. 5275-5281, 2017.
  27. W. Tushar, T. Wang, Y. Xu, C. Withanage, C. Yuen, and K. Wood, Policy Design for Controlling Set-point Temperature of ACs in Shared Spaces of Buildings, Energy and Buildings, 134, pp. 105-114, 2017.
  28. Y. Xu, N. Li, and S. Low, Demand Response with Capacity Constrained Supply Function Bidding, IEEE Trans. Power Systems, 31(2), pp. 1377-1394, 2016.
  29. Y. Xu, F. Pan, and L. Tong, Dynamic Scheduling for Charging Electric Vehicles: A Priority Rule, IEEE Trans. Automatic Control, 61(12), pp. 4094-4099, 2016. (A preliminary version was presented at the 51st IEEE CDC, December 2012.)
  30. S. Lakshminarayana, Y. Xu*, H. V. Poor, and T. Quek, Cooperation of Storage Operation in a Power Network with Renewable Generation, IEEE Trans. on Smart Grid, 7(4), pp. 2108-2122, 2016.
  31. Y. Xu, C. Shi, and I. Duenyas, Priority Rules for Multi-Task Due-date Scheduling Under Varying Processing Costs, Production and Operations Management, 25(12), pp. 2086-2102, 2016.
  32. J. N. Tsitsiklis and Y. Xu*, Pricing of Fluctuations in Electricity Markets, European Journal of Operational Research, 246(1), pp. 199-208, 2015. (A preliminary version was presented at the 51th IEEE CDC, December 2012.)
  33. S. Bose, C. Wu, Y. Xu, H. Mohsenian-Rad, and A. Wierman, Unifying Measure for Market Power in Deregulated Electricity Markets, IEEE Trans. Power Systems, 30(5), pp. 2338-2348, 2015.
  34. J. N. Tsitsiklis and Y. Xu*, Efficiency Loss in a Cournot Oligopoly with Convex Market Demand, Journal of Mathematical Economics, 53, pp. 46-58, 2014.
  35. J. Anselmi, D. Ardagna, J. C.S. Lui, A. Wierman, Y. Xu*, and Z. Yang, The Economics of the Cloud: Price Competition and Congestion, ACM SIGecom Exchanges, 13(1), pp. 58-63, 2014.
  36. J. N. Tsitsiklis and Y. Xu*, Profit Loss in Cournot Oligopolies, Operations Research Letters, 41(4), pp. 415-420, 2013.

Conference Papers

  1. J. Jin and Y. Xu*, Segregated Linear Decision Rules for Distributionally Robust Control, American Control Conference (ACC), June 2018.
  2. Q. Huang, Y. Xu*, T. Wang, and C. Courcoubetis, Market Mechanisms for Cooperative Operation of Price-maker Energy Storage in a Power Network, 56th IEEE Conference on Decision and Control (CDC) (invited paper), December 2017.
  3. J. Jin and Y. Xu*, A Flow Direction Enforcing Approach for Economic Dispatch with Adjustable Line Impedance, IEEE PES General Meeting, 2017.
  4. J. Jin and Y. Xu*, Optimal Operation of Energy Storage with Random Renewable Generation and AC/DC Loads, 55th IEEE Conference on Decision and Control (CDC), December 2016.
  5. Y. Zhe, Y. Xu, and L. Tong, Large Scale Charging of Electric Vehicles: A Multi-Armed Bandit Approach, 53th Annual Allerton Conference (invited paper), September 2015.
  6. T. Wang, Y. Xu*, S. Ahipasaoglu, and C. Courcoubetis, Max-min Fairness of Generalized AGV Mechanisms, 54th IEEE Conference on Decision and Control (CDC) (invited paper), December 2015.
  7. Y. Xu* and L. Tong, On the Operation and Value of Storage in Consumer Demand Response, 53nd IEEE Conference on Decision and Control (CDC) (invited paper), December 2014.
  8. E. Bitar* and Y. Xu*, On Incentive Compatibility of Deadline Differentiated Pricing for Deferrable Demand, 52nd IEEE Conference on Decision and Control (CDC) (invited paper), December 2013.
  9. D. Cai, Y. Xu* and S. Low, Optimal Investment of Conventional and Renewable Generation Assets, 51st Annual Allerton Conference, October 2013.
  10. J. N. Tsitsiklis and Y. Xu*, Bayesian Proportional Resource Allocation Games, 48th Annual Allerton Conference (invited paper), September 2010.