Welcome to Power and Energy Systems Laboratory

  Wei Qiao (Director)

   Clyde Hyde Professor of Electrical and Computer Engineering
   Chair of Electrical Engineering Graduate Program
   University of Nebraska-Lincoln
   E421H Nebraska Hall
   Lincoln, NE 68588-0511 USA
   Email: wqiao@engr.unl.edu
   Tel: 402-472-9619 Fax: 402-472-4732

          Ph.D., 2008 Georgia Institute of Technology, USA
          M.S., 2003 Singapore-MIT Alliance, National University of Singapore
          M.Eng., 2002 Zhejiang University, China
          B.Eng., 1997 Zhejiang University, China

       Clyde Hyde Professor, Department of Electrical and Computer Engineering, UNL, Jul. 2021-present
       Professor, Department of Electrical and Computer Engineering, UNL, Aug. 2017-Jul. 2021
       Associate Professor, Department of Electrical and Computer Engineering, UNL, Aug. 2013-2017 
       Harold and Esther Edgerton Assistant Professor, UNL, Mar. 2011-Aug. 2013
       Assistant Professor, Department of Electrical Engineering, UNL, Aug. 2008-Mar. 2011       

Professor Qiao’s research interests cover broad areas of electric power and energy systems, including modeling, control, and condition monitoring of renewable energy systems, power electronic devices and systems, and electric motor drives; grid integration of distributed energy resources; emerging electrical energy conversion devices; power system control and optimization; and energy storage systems. His research has been sponsored by the National Science Foundation (NSF), Department of Energy (DOE), Department of Transportation (DOT), National Labs, Nebraska Center for Energy Sciences Research (NCESR), Nebraska Research Initiative (NRI), and industry.

Professor Qiao is an Editor of the IEEE Transactions on Energy Conversion and the IEEE Power Engineering Letters , an Associate Editor of the IEEE Transactions on Power Electronics and the IEEE Journal of Emerging and Selected Topics in Power Electronics, and the Secretary of the IEEE PESL Sustainable Energy Systems Technical Committee.  He was the Corresponding Guest Editor of a special section on Condition Monitoring, Diagnosis, Prognosis, and Health Monitoring for Wind Energy Conversion Systems of the IEEE Transactions on Industrial Electronics from 2014 to 2015, an Associate Editor of IET Power Electronics from 2014 to 2018, and an Associate Editor of the IEEE Transactions on Industry Applications from 2010 to 2013.  In 2011 he established a new IEEE PES/PELS/IAS Joint Student Branch Chapter at UNL and has served as the advisor of the Chapter since then.  He was a Plenary/Tutorials/Townhall Meetings Co-Chair of the 2015 IEEE Energy Conversion Congress and Exposition (ECCE 2015), the Publications Chair of ECCE 2013, and a founding chair of the IEEE Symposium on Power Electronics and Machines in Wind Applications (PEMWA) in 2009.  He served as an Organizing Co-Chair of PEMWA 2016, the Publications Chair of PEMWA 2014, a Technical Program Co-Chair and the Publications Chair of PEMWA 2012, and a Technical Program Co-Chair and Finance Co-Chair of PEMWA 2009.

Professor Qiao is a Fellow of the IEEE and a Fellow of the AAIA (Asia-Pacific Artificial Intelligence Association). He was the recipient of the 2021 IEEE Power Electronics Society Sustainable Energy Systems Technical Achievement Award, a 2010 National Science Foundation CAREER Award, the 2010 IEEE Industry Applications Society (IAS) Andrew W. Smith Outstanding Young Member Award, the 2021, 2012 and 2017 UNL College of Engineering Faculty Research & Creative Activity Awards, the 2011 University of Nebraska-Lincoln Harold and Esther Edgerton Junior Faculty Award, and the 2011 UNL College of Engineering Edgerton Innovation Award. He received four best paper awards from the IEEE Industry Applications Society, IEEE Power Electronics Society, and IEEE Power & Energy Society, and was the second-place prize winner of the IEEE Vehicular Technology (VTS) Motor Vehicle Challenge 2019.

 Liyan Qu (Associate Director)

   Associsate Professor
   Department of of Electrical and Computer Engineering
   University of Nebraska-Lincoln
   E430E Nebraska Hall
   Lincoln, NE 68588-0511 USA
   Email: lqu2@unl.edu
   Tel: 402-472-5131 Fax: 402-472-4732



          Ph.D., 2007 University of Illinois at Urbana-Champaign, USA 
          M.Eng., 2002 Zhejiang University, China
          B.Eng., 1999 Zhejiang University, China


       Associate Professor, Department of Electrical and Computer Engineering, UNL, Aug. 2018-present 
       Assistant Professor, Department of Electrical and Computer Engineering, UNL, Aug. 2012-Aug. 2018

Professor Qu’s research interests include magnetic materials and devices for electric energy conversion, energy efficiency, renewable energy, numerical analysis and computer aided design of electric machinery and power electronic devices, and dynamics and control of electric machinery. Her research has been sponsored by the National Science Foundation (NSF), Department of Energy (DOE), National Labs, Nebraska Center for Energy Sciences Research (NCESR), and industry. Professor Qu was the recipient of a 2016 National Science Foundation CAREER Award, the 2016 UNL College of Engineering Faculty Research & Creative Activity Award, and the 2017 UNL College of Engineering Edgerton Innovation Award.

Graduate Students


Emmanuel Ani  (Ph.D. Student)
B.S., Electrical Engineering, University of Nigeria, 2016
Research Interest: 
Control of power systems

Bogac Canbaz (Ph.D. Student)
B.S., Electrical and Electronics Engineering, Bogazici University, Turkey, 2021
Research Interest: 
Power electronics and motion control

Cameron Entzminger (Ph.D. Student)
B.S., Computer Engineering, University of Nebraska-Lincoln, 2017
Research Interest: Power electronics, condition monitoring of electro-energy devices

Dibyendu Khan (Ph.D. Student)
M.S., Electrical Engineering, National Institute of Technology, India, 2022
Research Interest: Power electronics, battery systems, energy management

Matthew Penne (Ph.D. Student)
B.S., Electrical Engineering, University of Nebraska-Lincoln, 2019
Research Interest: Electric motor drives, electric machine design, magnetic gear

Ellie Stone (Ph.D. Student)
B.S., Electrical Engineering, University of Nebraska-Lincoln, 2022
Research Interest:  Distributed energy resources, smart grid

Anne Stratman (Ph.D. Student)
B.S., Physics and Mathematics, University of Notre Dame, 2019
Research Interest: Power system operation and economics, renewable energy, smart grid

Xuefei Xu (Ph.D. Student)
M.S., Electrical Engineering, Northeast Electric Power University, China, 2022
Research Interest: Condition monitoring of wind turbines, machine learning

Shuo Zhang (Ph.D. Student)
M.S., Electrical Engineering, Chongqing University, China, 2020
B.S., Mechanical Engineering, North China Electric Power University, 2017
Research Interest: 
Control of power electronic systems, renewable energy


Junwei Cui
Ph.D., August 2022
Dissertation Title: Permeability-Controllable Magnetic Devices for Flexible Fault Current Limiting and Voltage Regulation of Electrical Grids
Current Position: Senior Power Electronics Electrical Engineer, BorgWarner Inc.

Chao Jia
Ph.D., May 2022
Dissertation Title: Real-Time Optimal Energy Management of Hybrid Energy Systems for Fuel Cell Electrical Vehicles
Current Position: Postdoc, PESL

Yayu Peng
Ph.D., May 2021
Dissertation Title: 
Wind Turbine Drivetrain Fault Diagnosis Based On Compressive Sensing and Information Fusion
Current Position: 
Assistant Professor, University of Nebraska at Kearney

Josue Campos do Prado
Ph.D., July 2020
Dissertation Title: 
Vision, Framework, and Decision-Making for Integrating Distributed Energy Resources in the Next-Generation Retail Electricity Market
Current Position: 
Assistant Professor, School of Engineering and Computer Science, Washington State University

Mohamed Kareem AlAshery
Ph.D., July 2020
Dissertation Title: 
Risk Management for Decision-Making under Uncertainty in Electricity Markets
Current Position: 
Software Engineer, GE Digital Energy

Fa Chen
Ph.D., May 2020
Dissertation Title: 
Low-Computation-Cost and Low-Complexity Pulse-width Modulation for Multilevel Inverters
Current Position: 
Application Engineer, Maxim Integrated

Baohua Dong
Ph.D., Dec. 2019
Dissertation Title: 
The Stability Analysis for Wind Turbines with Doubly Fed Induction Generators
Current Position: 
Power Systems Application Engineer, GE Digital Energy

Lizhi Qu
Ph.D., December 2019
Dissertation Title: 
Active Disturbance Rejection Control for Permanent-Magnet Synchronous Motor Drives
Current Position: 
Software Development Engineer II, Toshiba International Corporation

Dongliang Xiao
Ph.D., December 2019
Dissertation Title: Stochastic Virtual Bidding in the Two-Settlement Electricity Market

Dingguo Lu
Ph.D., May 2018
Dissertation Title: Nonintrusive Condition Monitoring and Fault Diagnosis for Wind Turbine Gearboxes Using Generator Current Signals
Current Position: Research Engineer, Mercedes-Benz Research & Development North America, Inc.

Fangzhou Cheng
Ph.D., December 2017
Dissertation Title: Current-Based Fault Diagnosis and Prognosis for Wind Turbine Drivetrain Gearboxes
Current Position: Data Scientist, Amazon Web Services

Haosen Wang
Ph.D., September 2017
Dissertation Title: Controllable Stationary Voltage and Frequency Power Conversion Based on Electromagnetic Induction
Current Position: System Engineer, Innovusion

Ze Wang
Ph.D., January 2017
Dissertation Title: Real-Time Internal Temperature Estimation and Health Monitoring for IGBT Modules
Current Position: Power Electronics EngineerDelta Electronics (Americas)

Chun Wei
Ph.D., August 2016
Dissertation Title: Sensorless Control for Variable-Speed Wind Energy Conversion Systems
Current Position: Associate Professor, College of Information Engineering, Zhejiang University of Technology


Cong Ma
Ph.D., August 2016
Dissertation Title: Torque Ripple and Vibration Reduction of Switched Reluctance Machines
Current Position: Senior Electric Machine Engineer, BorgWarner, Inc.


Ting Dai
Ph.D., August 2015
Dissertation Title: Wind Power Trading in the Competitive Electricity Market
Current Position: Power System Engineer, Siemens Energy Management Division


Jianwu Zeng
Ph.D., August 2015  
Dissertation Title: Isolated Multiport Converters for Renewable Energy Conversion and Microgrids
Current Position: Associate Professor, Department of Electrical & Computer Engineering & Technology, Minnesota State University


Taesic Kim
Ph.D., May 2015  
Dissertation Title: Model-Based Condition Monitoring and Power Management for Rechargeable Electrochemical Batteries
Current Position: Associate Professor, Electrical Engineering and Computer Science Department, Texas A&M University-Kingsville


Zhe Zhang
Ph.D., May 2015  
Dissertation Title: Direct Torque Control of Permanent Magnet Synchronous Machines with Applications to Motor Drives and Wind Energy Conversion Systems
Current Position: Lead Power Electronics EngineerEaton


Yue Zhao
Ph.D., May 2014  
Dissertation Title: Position/Speed Sensorless Control for Permanent Magnet Synchronous Machines
Current Position: Associate Professor, Department of Electrical Engineering, University of Arkansas


Xiang Gong
Ph.D., August 2012
Dissertation Title: Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines
Current Position: Principal Engineer-Controls, McNeilus Truck and Manufacturing, Inc.

Matthew Penne
M.S., December 2021

Huda Hosson
M.S., May 2021

Yilin Ge
M.S., December 2019

Pamungkas Prahara
M.S., December 2017

Nan Jiang
M.S., December 2016
Current Position: Ph.D. student, Department of Computer Science and Engineering, UNL

Clark Lacy
M.S., August 2012
Thesis Title: Current-Based Fault Detection for Wind Turbine Generators via Hilbert-Huang Transform
Current Position:  Product Engineer, Vishay Intertechnology, Inc. 


Taesic Kim
M.S., August 2012
Thesis Title: A Hybrid Battery Model Capable of Capturing Dynamic Circuit Characteristics and Nonlinear Capacity Effects


Christopher John Lohmeier
M.S., December 2011
Thesis Title: Highly Efficient Maximum Power Point Tracking Using a Quasi-Double-Boost DC/DC Converter for Photovoltaic Systems
Current Position:  R&D Engineer, Vishay Dale Electronics, Inc. 

Jun Wang
Postdoc Fellow, July 2015-June 2017
Current Position: Associate Professor, School of Urban Rail Transportation, Soochow University, China

Xiaohang Jin
Postdoc Fellow, Feb. 2015-Jan. 2016
Current Position: Associate Professor, College of Mechanical Engineering, Zhejiang University of Technology, China


Xiaoqing Bai
Postdoc Fellow, Nov. 2011-Oct. 2015
Current Position: Professor, College of Electrical Engineering, Guangxi University, China


Bo Tian
Postdoc Fellow, Feb. 2012-Aug. 2015
Current Position: Postdoctoral Associate, Department of Electrical Engineering, University of South Carolina


Yanping Jiao
Postdoc Fellow, Nov. 2011-Aug. 2013  
Current Position: Neopatents 

Matthew Penne (Undergraduate): Nov. 2016-May 2019

Andrew He (UCARE student), June 2014-May 2016

Daniel Rico (UCARE student), Sept. 2015-May 2016
Michael Weskamp(Undergraduate): May 2015-May 2016
Jackson Olson (Undergraduate): Mar. 2014-Dec. 2015
Brandon Guenther (Undergraduate): Mar. 2014-Aug. 2015
Pedro Silveira Gomes de Paiva (Undergraduate): May-Aug. 2014
Xi He (Undergraduate):  Oct. 2011-Dec. 2013
Kathleen Gegner (Undergraduate):  Aug.-Dec. 2013
Douglas Dietze (Undergraduate): Feb. 2010-Aug. 2011
Daihyun Ha (Undergraduate): Feb. 2010-May 2011

Visiting Scholar

Dr. Lei Zhang, Huazhong University of Science and Technology, March-September 2016
Dr. Hongjuan Zhang, Taiyuan University of Technology, August 2015-August 2016
Yangwu Shen, Wuhan University, China, May-September 2014