Academic Degrees
- Ph.D., Electrical Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 2007
- M.S., Electrical Engineering, Zhejiang University, Hangzhou, China, 2002
- B.S., Electrical Engineering, Zhejiang University, Hangzhou, China, 1999
Areas of Research and Professional Interest
- Modeling techniques to facilitate the analysis and design of complex, high-performance electric energy systems
- Numerical analysis and computer aided design for electric machinery and power electronic devices and circuits
- Electric machines and drives
- Magnetic devices and materials
- Power management for electric energy systems, e.g., battery-powered systems
- Renewable energy systems, e.g., wind, solar
- Wireless power transmission
- Energy harvesting
Feb 27, 2024:
Qu named senior member of National Academy of Inventors
May 02, 2016:
NSF CAREER Award boosts smart power grid research
Feb 26, 2016:
NSF grant boosts Qu's smart power grid research
Courses Taught
- ELEC 428/828 - Power Electronics
- ELEC 438/838 - Introduction to Electric Power Engineering
- ELEC 498/898 - Special Topics in Electrical Engineering IV
- ECEN 436/836 - Electric Machines
- ECEN 996 - Numerical Analysis
Selected Publications
Refereer Journal Papers:
- C. Jia, J. Cui, W. Qiao, and L. Qu, “Real-time model predictive control for battery-supercapacitor hybrid energy storage systems using linear parameter varying models,” IEEE Journal of Emerging and Selected Topics in Power Electronics, accepted for publication.
- Y. Peng, W. Qiao, and L. Qu, “Compressive sensing-based missing-data-tolerant fault detection for remote condition monitoring of wind turbines,” IEEE Transactions on Industrial Electronics, vol. 69, no. 2, pp. 1937-1947, Feb. 2022.
- F. Chen, W. Qiao, H. Wang, and L. Qu, “A simple zero-sequence voltage injection method for carrier-based pulse-width modulation of the three-level NPC inverter,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 4, pp. 4687-4699, Aug. 2021.
- Z. Wang, W. Qiao, and L. Qu, “A real-time adaptive IGBT thermal model based on an effective heat propagation path concept,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 4, pp. 3936-3946, Aug. 2021.
- J. Cui, L. Qu, and W. Qiao, "Electromagnetic transformer with a continuously and quickly adjustable voltage ratio," IEEE Transactions on Industry Applications, vol. 57, no. 3, pp. 2421-2430, May-June 2021.
- Y. Peng, F. Cheng, W. Qiao, and L. Qu, “Wind turbine drivetrain gearbox fault diagnosis using information fusion on vibration and current signals,” IEEE Transactions on Instrumentation and Measurement, vol. 70, Art no. 3518011, May 2021.
- L. Qu, W. Qiao, and L. Qu, “An extended-state-observer-based sliding-mode speed control for permanent-magnet synchronous motors,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 2, pp. 1605-1613, Apr. 2021.
- L. Qu, W. Qiao, and L. Qu, “Active-disturbance-rejection-based sliding-mode current control for permanent-magnet synchronous motors,” IEEE Transactions on Power Electronics, vol. 36, no. 1, pp. 751-760, Jan. 2021.
- L. Qu, W. Qiao, and L. Qu, “An enhanced linear active disturbance rejection rotor position sensorless control for permanent magnet synchronous motors,” IEEE Transactions on Power Electronics, vol. 35, no. 6, pp. 6175-6184, Jun. 2020.
- T. Kim, W. Qiao, and L. Qu, “An enhanced hybrid battery model,” IEEE Transactions on Energy Conversion, vol. 34, no. 4, pp. 1848-1858, Dec. 2019.
- F. Cheng, L. Qu, W. Qiao, C. Wei, and L. Hao, “Fault diagnosis of wind turbine gearboxes based on DFIG stator current envelope analysis,” IEEE Transactions on Sustainable Energy, vol. 10, no. 3, pp. 1044-1053, Jul. 2019.
- F. Cheng, L. Qu, W. Qiao, and L. Hao, “Enhanced particle filtering for remaining useful life prediction of a wind turbine drivetrain gearbox,” IEEE Transactions on Industrial Electronics, vol. 66, no. 6, pp. 4738-4748, Jun. 2019.
- J. Wang, W. Qiao, and L. Qu, “Wind turbine bearing fault diagnosis based on sparse representation of condition monitoring signals,” IEEE Transactions on Industry Applications, vol. 55, no. 2, pp 1844-1852, Mar.-Apr. 2019.
- J. C. do Prado, W. Qiao, L. Qu, and J. R. Agüero, “The next-generation retail electricity market in the context of distributed energy resources: Vision and integrating framework,” Energies, vol. 12, no. 3, 491, Feb. 2019.
- X. Jin, F. Cheng, Y. Peng, W. Qiao, and L. Qu, “Drivetrain gearbox fault diagnosis: Vibration- and current-based approaches,” IEEE Industry Applications Magazine, vol. 24, no. 6, pp. 56-66, Nov.-Dec. 2018.
- W. Qiao and L. Qu, “Prognostic condition monitoring for wind turbine drivetrains via generator current analysis,” Chinese Journal of Electrical Engineering, vol. 4, no. 3, pp. 80-89, Sept. 2018.
- J. Wang, F. Cheng, W. Qiao, and L. Qu, “Multiscale filtering reconstruction for wind turbine gearbox fault diagnosis under varying-speed and noisy conditions,” IEEE Transactions on Industrial Electronics, vol. 65, no. 5, pp 4268-4278, May 2018.
- Y. Peng, W. Qiao, L. Qu, and J. Wang, “Sensor fault detection and isolation for a wireless sensor network-based remote wind turbine condition monitoring system,” IEEE Transactions on Industry Applications, vol. 54, no. 2, pp 1072-1079, Mar.-Apr. 2018.
- F. Cheng, J. Wang, L. Qu, and W. Qiao, “Rotor-current-based fault diagnosis for DFIG wind turbine drivetrain gearboxes using frequency analysis and a deep classifier,” IEEE Transactions on Industry Applications, vol. 54, no. 2, pp 1062-1071, Mar.-Apr. 2018.
- F. Cheng, L. Qu, and W. Qiao, “Fault prognosis and remaining useful life prediction of wind turbine drivetrain gearboxes using current signal analysis,” IEEE Transactions on Sustainable Energy, vol. 9, no. 1, pp 157-167, Jan. 2018.
- F. Cheng, Y. Peng, L. Qu, and W. Qiao, “Current-based fault detection and identification for wind turbine drivetrain gearboxes,” IEEE Transactions on Industry Applications, vol. 53, no. 2, pp. 878-887, Mar.-Apr. 2017.
- H. Wang, L. Qu, W. Qiao, and B. Liu, “Magnetic flux valve: A magnetoelectric materials-based device for conversion and control of electric power,” IEEE Transactions on Industrial Electronics, vol. 64, no. 3, pp. 2451-2458, Mar. 2017.
- C. Wei, Z. Zhang, W. Qiao, and L. Qu, “An adaptive network-based reinforcement learning method for MPPT control of PMSG wind energy conversion systems,” IEEE Transactions on Power Electronics, vol. 31, no. 11, pp. 7837-7848, Nov. 2016.
- Z. Zhang, C. Wei, W. Qiao, and L. Qu, “Adaptive saturation controller-based direct torque control for permanent-magnet synchronous machines,” IEEE Transactions on Power Electronics, vol. 31, no. 10, pp. 7112-7122, Oct. 2016.
- X. Bai, W. Qiao, and L. Qu, “Robust AC optimal power flow for power networks with wind power generation,” IEEE Transactions on Power Systems, vol. 31, no. 5, pp. 4163-4164, Sept. 2016.
- X. Jin, W. Qiao, Y. Peng, F. Cheng, and L. Qu, “Quantitative evaluation of wind turbine faults under variable operational conditions,” IEEE Transactions on Industry Applications, vol. 52, no. 3, pp. 2061-2069, May/Jun. 2016.
- Z. Wang, B. Tian, W. Qiao, and L. Qu, “Real-time aging monitoring for IGBT modules using case temperature,” IEEE Transactions on Industrial Electronics, vol. 68, no. 2, pp. 1168-1178, Feb. 2016.
- H. Wang, L. Qu, and W. Qiao, “Adjustable-voltage-ratio magnetoelectric transformer,” IEEE Magnetics Letters, vol. 6, Article# 6000104, Sept. 2015.
- C. Ma and L. Qu, “Multiobjective optimization of switched reluctance motors based on design of experiments and particle swarm optimization,” IEEE Transactions on Energy Conversion, vol. 30, no. 3, pp. 1144-1153, Sept. 2015.
- C. Wei, Z. Zhang, W. Qiao, and L. Qu, “Reinforcement learning-based intelligent maximum power point tracking control for wind energy conversion systems,” IEEE Transactions on Industrial Electronics, vol. 62, no. 10, pp. 6360-6370, Oct. 2015.
- Z. Zhang, Y. Zhao, W. Qiao, and L. Qu, “A discrete-time direct-torque control for direct-drive PMSG-based wind energy conversion systems,” IEEE Transactions on Industry Applications, vol. 51, no. 4, pp. 3504-3514, July-Aug. 2015.
- J. Zeng, W. Qiao, and L. Qu, “An isolated three-phase bidirectional DC-DC converter for photovoltaic systems with energy storage,” IEEE Transactions on Industry Applications, vol. 51, no. 4, pp. 3493-3503, July-Aug. 2015.
- J. Zeng, W. Qiao, and L. Qu, “LCL-resonant single-switch isolated DC-DC converter,” IET Power Electronics, vol. 8, no. 7, pp. 1209-1216, July 2015.
- Z. Zhang, Y. Zhao, W. Qiao, and L. Qu, “A space-vector modulated sensorless direct-torque control for direct-drive PMSG wind turbines,” IEEE Transactions on Industry Applications, vol. 50, no. 4, pp. 2331-2341, Jul./Aug. 2014.
- J. Zeng, W. Qiao, L. Qu, and Y. Jiao, “An isolated multiport DC-DC converter for simultaneous power management of multiple different renewable energy sources,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 2, no. 1, pp. 70-78, Mar. 2014.
- T. Kim, W. Qiao, and L. Qu, “Power electronics-enabled self-X multicell batteries: A design toward smart batteries,” IEEE Transactions on Power Electronics, vol. 27, no. 11, pp. 4723-4733, Nov. 2012.
- L. Qu and W. Qiao, “Constant power control of DFIG wind turbines with supercapacitor energy storage,” IEEE Transactions on Industry Applications, vol. 47, no. 1, pp 359-367, Jan.-Feb. 2011.
- W. Qiao, L. Qu, and R. G. Harley, “Control of IPM synchronous generator for maximum wind power generation considering magnetic saturation,” IEEE Transactions on Industry Applications, vol. 45, no. 3, pp. 1095-1105, May-June 2009.
- L. Qu and P. L. Chapman, “Extraction of low-order nonlinear inductor models from a high-order physics-based representation,” IEEE Transactions on Power Electronics, vol. 21, no.3, pp. 813-817, May 2006.
- L. Qu, J. Wu, and Y. Chen, “Automatic generation and fast implementation of finite element mesh,” Electric Machines and Control, vol. 6, no.1, pp. 34-38, Mar. 2002.
- L. Qu, J. Wu, and Y. Chen, “Object-oriented visualization CAD system for DC motor,” Small & Special Electrical Machines, vol. 28, no. 6, pp. 40-42, 2000.