Liwei Wang

Assistant Professor

Electrical
Office: EME4213
Phone: 250.807.8137
Email: liwei.wang@ubc.ca

Graduate student supervisor



Research Summary

Electric Power Systems; High Power Electronics; HVDC and FACTS Systems; Electrical Machines and Drives

Courses & Teaching

Power Systems; Power Electronics; Electromechanical Devices; Numerical Modeling and Analysis

Biography

Dr. Wang received his Ph.D. degree in Electrical and Computer Engineering from The University of British Columbia, Vancouver, BC, Canada, in January 2010. Before he completed his Ph.D., he was an Internship Researcher at ABB Switzerland Corporate Research Center, Baden-Dattwil, Switzerland. He was a Postdoctoral Research Fellow in the Department of Electrical and Computer Engineering, University of British Columbia from February 2010 to July 2010. In August 2010, he joined ABB Sweden Corporate Research Center, Västerås, Sweden, as a Scientist and then a Senior Scientist. From July 2014, he joined School of Engineering, the University of British Columbia, Kelowna, BC, Canada as an Assistant Professor. Currently, he serves as an Associate Editor for IEEE Transactions on Energy Conversion and IEEE Power Engineering Letters. He served as a Guest Associate Editor for a special issue of IEEE TEC on Distributed Decision Making in Energy Conversion Systems and a panel session presenter in the IEEE Task Force on Induction Machine Modeling in IEEE Power and Energy Society (PES) General Meeting, Denver, 2015. Dr. Wang established his research lab “Flexible Power Transmission Laboratory for Renewable Energy Integration” in UBC Okanagan Campus. The laboratory received $305,000 CAD funding from Canadian Foundation for Innovation (CFI) and BC Knowledge Development Fund (BCKDF) in 2017 to acquire the-state-of-the-art lab equipment. The lab equipment and infrastructure include real-time power system/electronics simulators from OPAL-RT, modular multilevel converter test-bench, induction machine drives, measurement and data acquisition systems (TEK oscilloscopes, high voltage, high current probes). He received Teaching Excellence Award 2017/2018 from the School of Engineering, UBCO.

Degrees

PhD – Electrical Engineering (The University of British Columbia)
MSc – Electrical Engineering (Tianjin University, China)
BSc – Electrical Engineering (Hebei University of Technology, China)

Research Interests & Projects

Dr. Wang’s research interests include power system analysis, operation and simulation, electrical machine and drives, power electronic converter design, control and topology, power semiconductors modeling and characterization, utility power electronics applications, HVDC and FACTS, renewable energy sources, and distributed generation.

Selected Publications & Presentations

  • Xuekun Meng, Jintao Han, Joel Pfannschmidt, Liwei Wang, Wei Li, Fei Zhang, and Jean Belanger, “Combining Detailed Equivalent Model with Switching-Function-Based Average Value Model for Fast and Accurate Simulation of MMCs”, Accepted to IEEE Transactions on Energy Conversion, 2019.
  • Xuekun Meng, Jintao Han, Levi Bieber, Liwei Wang, Wei Li, and Jean Belanger, “A Universal Blocking-module-based Average Value Model of Modular Multilevel Converters with Different Types of Submodules”, Accepted to IEEE Transactions on Energy Conversion, 2019.
  • Yuri R. Rodrigues, Morad Abdelaziz, and Liwei Wang, “D-PMU Based Secondary Frequency Control for Islanded Microgrids,” Accepted to IEEE Transactions on Smart Grid, 2019.
  • Ashraf Ali Khan, Yun Lu, Wilson Eberle, Liwei Wang, Khan Usman, and Honnyong Cha, “Single-Phase Split-Inductor Differential Boost Inverters”, Accepted to IEEE Transactions on Power Electronics, paper ID: TPEL-Reg-2018-11-2410, 2018.
  • Mohammad Toulabi, Liwei Wang, Levi Bieber, Shaahin Filizadeh, and Juri Jatskevich, “A Universal High-Frequency Induction Machine Model and Characterization Method for Arbitrary Stator Winding Connections”, Accepted to IEEE Transactions on Energy Conversion, TEC-00874-2017, 2018.
  • Janesh Rupasinghe, Shaahin Filizadeh, and Liwei Wang, “A Dynamic Phasor Model of an MMC with Extended Frequency Range for EMT Simulations”, Accepted to IEEE Journal of Emerging and Selected Topics in Power Electronics, paper ID: JESTPE-2018-04-0374, 2018.
  • Amin Mohammadpour Shotorbani, Behnam Mohammadi-Ivatlooa, Liwei Wang, M. Marzband, and Mehran Sabahi, “Application of finite-time control Lyapunov function in low-power PMSG wind energy conversion systems for sensorless MPPT”, Accepted to International Journal of Electrical Power and Energy Systems IJEPES_2016_2626, 2018.
  • Seyyedmilad Ebrahimi, Navid Amiri, Yingwei Huang, Liwei Wang, and Juri Jatskevich “Average-Value Modeling of Line-Commutated Rectifiers under Asymmetrical Operation and Internal Faults”, Accepted to IEEE Transactions on Energy Conversion, paper ID: TEC-00047-2018.
  • Seyyedmilad Ebrahimi, Navid Amiri, Saeed Rezaee, Liwei Wang, and Juri Jatskevich, “Efficient Modelling of Six˗Phase PM Synchronous Machine-Rectifier Systems in State-Space Simulation Packages,” In press, IEEE Transactions on Energy Conversion, paper ID: TEC-00838-2017, 2018.
  • Seyyedmilad Ebrahimi, Navid Amiri, Liwei Wang, and Juri Jatskevich “Parametric Average-Value Modeling of Thyristor-Controlled Rectifiers with Internal Faults and Asymmetrical Operation”, IEEE Transactions on Power Delivery, vol. 34, no. 2, 2019.
  • Amin Shotorbani, Behnam Mohammadi-Ivatloo, Liwei Wang, Saeid Ghassem-Zadeh, Seyed Hossein Hosseini, “Distributed secondary control of battery energy storage systems in a stand-alone microgrid”, IET Journal of Generation, Transmission & Distribution, vol. 12, no. 17, 2018.
  • Amin Shotorbani, Xuekun Meng, Liwei Wang, and Behnam Mohammadi-Ivatloo, “A Decentralized Multi-loop Scheme for Robust Control of a Power Flow Controller with Two Shunt Modular Multilevel Converters”, accepted to IEEE Transactions on Industrial Informatics, paper ID:TII-17-1334, 2017.
  • Seyyedmilad Ebrahimi, Navid Amiri, HamidAtighechi, Yingwei Huang, Liwei Wang, and Juri Jatskevich, “Generalized Parametric Average-Value Model of Line-Commutated Rectifiers Considering AC Harmonics with Variable Frequency Operation” accepted to IEEE Transactions on Energy Conversion, paper ID: TEC-00232-2017.
  • Hamid Atighechi, Po Hu, Seyyedmilad Ebrahimi, Jun Lu, Guihua Wang, and Liwei Wang, “An Effective Load Shedding Remedial Action Scheme Considering Wind Farms Generation”, accepted to International Journal of Electrical Power and Energy Systems, 2017.
  • Xuekun Meng and Liwei Wang, “Hybrid Electromagnetic and Electromechanical Transient Simulation of AC Grids Integrated with Modular-Multilevel-Converter-Based DC Transmission,” IET Journal of Generation, Transmission, and Distribution, In press, Paper ID: GTD-SI-2016-1664, 2016.
  • Seyyedmilad Ebrahimi, Navid Amiri, Hamid Atighechi, Liwei Wang, Juri Jatskevich, “Verification of Parametric Average-Value Model for Thyristor-Controlled Rectifier Systems for Variable-Frequency Wind Generation Systems,” IEEE Power Engineering Letters, vol. 31, no. 1, 2016.
  • Chengshan Wang, Xiaopeng Fu, Peng Li, Jianzhong Wu, and Liwei Wang, “Multiscale Simulation of Power System Transients Based on the Matrix Exponential Function“, IEEE Transactions on Power Systems, In press, Paper ID: TPWRS-01813-2015, Aug. 2016.
  • Francis Therrien, Liwei Wang, Mehrdad Chapariha, and Juri Jatskevich, “Constant-Parameter Interfacing of Saturable Induction Machine Models in EMTP-Type Programs,” IEEE Transactions on Energy Conversion, vol.31, no.1, 2016.
  • Muhammad Nawaz, Nan Chen, Filippo Chimento, and Liwei Wang, “Static and Dynamic Characterization of High Power Silicon Carbide BJT Modules,” IEEE Industrial Applications Magazine, vol. 52, no. 6, 2016.
  • Filippo Chimento, Nan Chen, Muhammad Nawaz, and Liwei Wang, “Dynamic Characterization of Parallel-Connected High-Power IGBT Modules,” IEEE Transactions on Industrial Applications, vol. 51, no. 1, 2015.
  • Francis Therrien, Liwei Wang, Juri Jatskevich and Oleg Wasynczuk, “Efficient Explicit Representation of AC Machines Main Flux Saturation in State-Variable-Based Transient Simulation Packages,” IEEE Transactions on Energy Conversion, vol. 28, no. 2, 2013.
  • Liwei Wang and Juri Jatskevich, “A Phase-Domain Synchronous Machine Model with Constant Equivalent Conductance Matrix for EMTP-Type Solution,” IEEE Transactions on Energy Conversion, invited paper, vol. 28, no. 1, 2013.
  • Mehrdad Chapariha, Liwei Wang and Juri Jatskevich, Hermann Dommel, and Steven D. Pekarek, “Constant Parameter RL-branch Equivalent Circuit for Interfacing AC Machine Models in State-Variable-Based Simulation Packages,” IEEE Transactions on Energy Conversion, vol. 27, no. 3, 2012.
  • Liwei Wang and Juri Jatskevich, “Magnetically-Saturable Voltage-Behind-Reactance Synchronous Machine Model for EMTP-Type Solution,” IEEE Transactions on Power Systems, vol. 26, no. 4, 2011.
  • Liwei Wang, Carl N.M. Ho, Francisco Canales, and Juri Jatskevich, “High-Frequency Modeling of the Long-Cable-Fed Induction Motor Drive System Using TLM Approach for Predicting Overvoltage Transients,” IEEE Transactions on Power Electronics, vol. 25, no. 10, 2010.
  • Liwei Wang, Juri Jatskevich, Venkata Dinavahi, Hermann Dommel, Juan Martinez, Kai Strunz, Michel Rioual, Gary Chang, and Reza Iravani, “Methods of Interfacing Rotating Machine Models in Transient Simulation Programs,” IEEE Transactions on Power Delivery, vol. 25, no. 2, 2010.
  • Liwei Wang and Juri Jatskevich, “Approximate Voltage-Behind-Reactance Induction Machine Model for Efficient Interface with EMTP Network Solution,” IEEE Transactions on Power Systems, vol. 25, no. 2, 2010.
  • Liwei Wang and Juri Jatskevich, “Including Magnetic Saturation in Voltage-Behind-Reactance Induction Machine Model for EMTP-Type Solution,” IEEE Transactions on Power Systems, vol. 25, no. 2, 2010.
  • Liwei Wang, Juri Jatskevich, Chengshan Wang and Peng Li, “A Voltage-Behind-Reactance Induction Machine Model for the EMTP-Type Solution,” IEEE Transactions on Power Systems, vol. 23, no. 3, Aug. 2008.
  • Liwei Wang, Juri Jatskevich, and Steven Pekarek, “Modeling of Induction Machines Using a Voltage-Behind-Reactance Formulation,” IEEE Transactions on Energy Conversion, vol. 23, no.2, Jun. 2008.
  • Liwei Wang, Juri Jatskevich, and Hermann Dommel, “Re-examination of Synchronous Machine Modeling Techniques for Electromagnetic Transient Simulations,” IEEE Transactions on Power Systems, vol. 22, no. 3, Aug. 2007.
  • Liwei Wang and Juri Jatskevich, “A Voltage-Behind-Reactance Synchronous Machine Model for the EMTP-Type Solution,” IEEE Transactions on Power Systems, vol. 21, no. 4, Nov. 2006.

 

Patents Pending 

  • Alireza Nami, Frans Dijkhuizen, Jiaqi Liang, Liwei Wang, and Tomas Jonsson, PCT/EP2014/065673, “A multilevel converter with reduced AC fault handling rating,” ABB Sweden, filed in July 2014.
  • Alireza Nami, Frans Dijkhuizen, Liwei Wang, WO2014154265A1, “Hybrid power converter with modular multilevel strings in neutral point clamping topologies,” ABB Sweden, filed in March 2013.
  • Alireza Nami, Liwei Wang, Frans Dijkhuizen, WO2014154241A1, “A multilevel converter with cell type mixing,” ABB Sweden, filed in March 2013.
  • Alireza Nami, Liwei Wang, WO2014111164, “A multilevel converter with hybrid full-bridge cells”, ABB Sweden, filed in January 2013.
  • Alireza Nami, Frans Dijkhuizen, Jiaqi Liang, Liwei Wang, and Tomas Jonsson, WO2014111595A1, “A multilevel converter with hybrid full-bridge cells”, ABB Sweden, filed in January 2013.
  • Alireza Nami, Liwei Wang, WO2014124761A2, PCT/EP2014/050228A1, “Converter cell, high-voltage multilevel converter and associated method,” ABB Sweden, filed in February 2013.
  • Alireza, Nami, Liwei Wang, EP2768133A1 “Converter cell with reduced power losses, high voltage multilevel converter and associated method,” ABB Sweden, filed in February 2013.
  • Liwei Wang, Alireza Nami, SE1300439A1, “A submodule for modular multilevel converter”, ABB Sweden, filed in June 2013.
  • Liwei Wang, Filippo Chimento, Muhammad Nawaz, and Jing Ni, SE1200544A1, “Method and apparatus for cooling semiconductor modules in HVDC converters”, ABB Sweden, filed in September 2012.
  • Liwei Wang, Filippo Chimento, Muhammad Nawaz, and Willy Hermansson, SE1200545A1, “Methods for paralleling semiconductor modules in an HVDC application”, ABB Sweden, filed in September, 2012.
  • Ola Jeppsson, Ake Oberg, Liwei Wang, Filippo Chimento, WO2013185815A1, PCT/EP2012/061208, “Bypass switch assembly”, ABB Sweden, filed in June 2012.(Granted in US in 2015)
  • Alireza Nami, Liwei Wang and Staffan Norgga, WO2013135300, PCT/EP2012/054625, “Arrangement for conversion between ac and dc”, ABB Sweden, filed in March 2012.
  • Liwei Wang, Jianping Wang, Pedro Rodriguez, Mustafa Ibrahim, Antonis Marinopoulos, Zoran Gajic, WO2013004285, PCT/EP2011/061188,”System for detecting internal winding faults of a synchronous generator, computer program product and method”, ABB Sweden, filed in July 2011 (Granted in US in 2014)

 

Additional publications

Media

 

 

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