Research			Teaching			Miscellaneous
	Prof. Shaahin Filizadeh, Ph.D., P.Eng., SMIEEE Department of Electrical and Computer Engineering University of Manitoba 75A Chancellor’s Circle, Winnipeg, MB, R3T 5V6, CANADA Phone: (204) 480-1401 Fax: (204) 474-7522 Email: shaahin.filizadeh@umanitoba.ca
Research
IMPORTANT NOTE TO PROSPECTIVE APPLICANTS: If you are interested in graduate studies at the University of Manitoba under my supervision, please email me your CV and all your university transcripts along with your areas of interest. I will contact those whom I deem potentially suitable within a week. I am not able to respond to all admission inquiries due to the large volume of emails that I receive. Most recent research highlights 1. April 2020: In the paper we present a detailed analysis of the energy storage requirements in hybrid-cascaded MMCs. The method is general enough to be applicable, with minimal change, to other MMC topologies. Experimental and simulation results confirm or findings. X. Shi, S. Filizadeh, A. M. Gole, “Capacitor Energy Storage Requirements in Mixed-Submodule Hybrid Cascaded MMCs,” IEEE Trans. on Energy Conversion, to appear. 2. August 2019: In this paper we develop an accelerated detailed equivalent model of an MMC with SM-level energy storage (i.e., battery + dc-dc converter). We show the development of this model and demonstrate its computational efficiency using several example cases. Experimental test results on a laboratory-scale prototype are also included for additional verification of accuracy. N. Hearth, S. Filizadeh, M. S. Toulabi, “Modeling of a Modular Multilevel Converter with Embedded Energy Storage for Electromagnetic Transient Simulations,” IEEE Trans. on Energy Conversion, to appear. 3. June 2019: In this paper we show an in-depth analysis of a dual-inverter drive system for an IPMSM. We include nonlinear effects of Ld and Lq variations and use detailed FEM simulation and experimental measurements to study several power-sharing strategies for the two inverters. G. Watthewaduge, M. S. Toulabi, S. Filizadeh, “Performance analysis and operating limits of a dual-inverter open-winding IPMSM drive,” IEEE Trans. on Energy Conversion, to appear. 4. Jan. 2019: In this paper we show a numerical modeling method for a piezo-electric energy harvester and validate its accuracy experimentally. S. Bagheri, N. Wu, S. Filizadeh, “Numerical modeling and analysis of self-powered synchronous switching circuit for the study of transient charging behavior of a vibration energy harvester," Smart Materials and Structures, to appear.
Research areas of interest
My research interests are in the general area of electric power systems. I am particularly interested in computer modeling and simulation of systems wherein power electronic converters, energy storage systems, and fast-acting controllers are embedded. Examples include power-electronic intensive power systems (HVDC, FATCS), electric motor drive systems, and electrified vehicular systems. Explore the following for themes of our completed or in-progress work.
Extended-frequency dynamic phasor modeling
					Themes: 1. Dynamic phasor modeling of power-electronic converters (including MMC); 2. Dynamic phasor modeling of lage systems and interfacing to EMT simulation; 3. Dynamic phasor modelig of conventional network elements. Sample publications: S. Rajesvaran, S. Filizadeh, “Wide-band modeling of modular multilevel converters using extended-frequency dynamic phasors,” Scientia/Iranica. S. Rajesvaran, S. Filizadeh, “Modelling modular multilevel converters using extended-frequency dynamic phasors,” in Proc. IEEE Power Engineering Society General Meeting, Boston, MA, 2016. A. F. Darbandi, S. Filizadeh, “Development of reduced-intensity computer models for resonant converters,” in Proc. International Conference on Power System Transients, IPST’13, Vancouver, BC, July 2013.
Vehicular system modeling and HIL simulation
Themes: 1. Modeling and hardware-in-loop simulation of electrified drive-trains; 2. Modeling and characterization of energy-storage elements; 3. Modeling, characterization, and managemnet of vehicular charging demand. Sample publications: N. Ghiasnezhad, S. Filizadeh, “A semi-cooperative decentralized scheduling scheme for plug-in electric vehicle charging demand,” International Journal of Electric Power & Energy Systems, vol. 88, p-119-132, June 2017. E. Tara, S. Filizadeh, E. Dirks, “Battery-in-the-loop simulation of a planetary-gear based hybrid electric vehicle,” IEEE Trans. on Vehicular Technology, vol. 62, no. 2, pp. 573-581, Feb. 2013. S. Shahidinejad, E. Bibeau, S. Filizadeh, “Statistical development of a duty cycle for plug-in vehicles in a North-American urban setting using fleet information,” IEEE Trans. on Vehicular Technology, vol. 59, no. 8, pp. 3710-3719, October 2010.
HVDC converter topologies and MMCs
				Themes: 1. Converter toplogies with dc fault blocking capability; 2. Hardware-in-loop modeling and simulation;Energy balancing; 3. Component sizing; 4. Control and modeling. Sample publications: S. Howell, S. Filizadeh, A. M. Gole, “Unidirectional HVDC topology with DC fault ride-through capability,” Canadian Journal of Electrical and Computer Engineering, to appear. X. Shi, S. Filizadeh, “Design considerations of a hybrid cascaded modular multilevel converter,” in Proc. CIGRE Canada Conf., Vancouver, BC, Oct. 2016. C. Shumski, S. Howell, S. Filizadeh, “A reduced-order model of a hybrid modular multilevel converter,” in Proc. CIGRE Canada Conf., Vancouver, BC, Oct. 2016.
Simulation-based optimization and decision-support algorithms
Themes: 1. Simulation-based optimization; 2. Decision-support algorithms; 3. Application areas (power electronics, power systems, electric machines). Sample publications: A. Y. Goharrizi, R. Singh, A. M. Gole, S. Filizadeh, J. C. Muller, R. Jayasinghe, “A paralll multi-modal optimization algorithm for simulation-based design of power systems,” IEEE Trans. on Power Delivery, vol. 30, no. 5, pp. 2128-2137, Oct. 2015. M. Heidari, S. Filizadeh, A. M. Gole, “Electromagnetic transients simulation based surrogate models for tolerance analysis of FACTS apparatus,” IEEE Trans. on Power Delivery, vol. 28, no. 2, pp. 797-806, April 2013. S. Filizadeh, A. M. Gole, D. A. Woodford, G. D. Irwin, "An optimization-enabled electromagnetic transient simulation based methodology for HVDC controller design," IEEE Trans. on Power Delivery, vol. 22, no. 4, pp. 2559-2566, October 2007.
HVDC and PE converter modeling
				Themes: 1. LCC-HVDC modeling; 2. Wide-band dynamic phasor-based models; 3. Abnormal modes of operation. Sample publications: M. Daryabak, S. Filizadeh, J. Jatskevich, A. Davoudi, M. Saeedifard, V. K. Sood, J. A. Martinez, D. Aliprantis, J. M. Cano, A. Mehrizi-Sani, “Dynamic Average Modeling of Line-Commutated Converter-Based HVDC Using Dynamic Phasors,” IEEE Trans. on Power Delivery, vol. 29, no. 4, pp. 1989-1998, Aug. 2014. S. Chiniforoosh, H. Atighechi, A. Davoudi, J. Jatskevich, A. Yazdani, S. Filizadeh, M. Saeedifard, J. A. Martinez, V. Sood, K. Strunz, J. Mahseredjian, V. Dinavahi, “Dynamic average modeling of front-end diode rectifier loads considering discontinuous conduction mode and unbalanced operation,” IEEE Trans. on Power Delivery, vol. 27, no. 1, pp. 421-429, January 2012. D. Bazargan, S. Filizadeh, A. M. Gole, “Stability analysis of converter-connected battery energy storage systems in the grid,” IEEE Trans. on Sustainable Energy, vol. 5, no. 4, pp. 1204-1212, Oct. 2014.
Research team members
Present: PDF: Dr. M. S. Toulabi Doctoral Students: 1. Nuwan Herath 2. Randupama Gunasekara 3. Janesh Rupasinghe 4. Garry Bistyak M.Sc. students: 5. Nydia Xu 6. Karl Dirks 7. Christopher Beaudoin 8. Curtis Shumski 9. Jessie Doerksen		Past: PDFs: Dr. S. Shahidinejad: Energy storage and characterization of electrified drive-trains Doctoral students: 1. Xianghua Shi Thesis title: Hybrid Cascaded Modular Multilevel Converters for HVDC Transmission 2. Afshin Bagheri Vandae Thesis title: Extended-Frequency Dynamic Phasor Modelling of LCC-HVDC Systems for Electromagnetic Transient Simulations 3. Kumara Mudunkotuwage Thesis title: Co-Simulation of Power System Transients Using Dynamic Phasor and Electromagnetic Transient Simulators 4. Damon Bazargan (co-advised with Prof. A. M. Gole) Thesis title: A Study of Battery Energy Storage Dynamics in Power Systems 5. Ali Yazdanpanah Goharrizi (co-advised with Prof. A. M. Gole) Thesis title: Parallel Multi-Modal Optimal Design and Sensitivity Assessment for Electric Power Systems 6. Mehdi Daryabak Thesis title: Modeling Line-Commutated Converter HVDC Transmission Systems Using Dynamic Phasors 7. Nima Ghiasnezhad Omran Thesis title: Charging Load of Plug-in Vehicles on the Power Grid 8. Ehsan Tara Thesis title: Modeling, Optimization and Hardware-in-Loop Simulation of Hybrid Electric Vehicles 9. Mohamed M. Z. Moustafa Thesis title: Operating Limits and Dynamic Average-Value Modeling of VSC-HVDC Systems 10. Maziar Heidari Sept. 2005-Jun. 2010 (co-advised with Prof. A. M. Gole) Thesis title: Decision Support Algorithms for Power System and Power Electronic Design M.Sc. students: 11. Indula Abeyrathne 12. Gayan Amaradesa 13. Konstantinos Stamatis 14. Brude Liu 15. Kang Liu 16. Nuwan Herath 17. Buddhika DeSilva Thesis title: Electromagnetic Design Optimization of V-Shaped Magnet IPM Synchronous Machines 18. Janesh Rupasinghe Thesis title: A Dynamic Phasor Model of a Modular Multilevel Converter for EMT Co-Simulation 19. Haiyue Wang Thesis title: Real-Time and Non-Real-Time EMT Simulation of an Alternate Arm Converter 20. Shailajah Rajesvaran Thesis title: Modeling of Modular Multilevel Converters using Extended-Frequency Dynamics Phasors 21. Amin Hajihosseinlou Thesis title: Traction Control of an Electric Vehicle with Four In-Wheel Motors 22. Mathias Pielahn (co-advised with Dr. C. Shafai) Thesis title: Vibrational Energy Harvesting with Piezoelectric Cantilevers 23. Matthew Kolasza Thesis title: Generalized Dynamic Phasor-Based Simulation for Power Systems 24. Randupama Gunasekara Thesis title: Internal Model Design for Power Electronic Controllers 25. Damon Bazargan Thesis title: Hardware-in-Loop Simulation of Battery Storage Systems for Power System Applications 26. Arash Fazel-Darbandi Thesis title: Design and Implementation of a DC-DC Resonant Converter for Power System Applications 27. Steven Howell Thesis title: Implementation of a Fuzzy Logic Based Set-Point Modulation Scheme with SVC System Applications 28. Maryam Salimi Thesis title: Simulation-based optimal design of induction motor drives 29. Azin Shahab Thesis title: Dynamic Average-Value Modeling of Doubly-Fed Induction Generator Wind Energy Conversion Systems 30. Mehrdad Espah Thesis title: DC Capacitor Voltage Balancing for Multi-Level Converters 31. Greg Chongva Thesis title: Processor-in-loop control system design using a non-real-time electromagnetic transient simulator 32. Lalin Kothalawala Thesis title: Computationally efficient simulation based sensitivity method for power electronic circuits 33. Chathura Jeevantha Thesis title: Co-Simulation of back-to-back VSC transmission system 34. Gustavo Marjovsky Thesis title: Instantaneous power theory for active filtering of high displacement power factor non-linear loads 35. Farhad Yahyaie Thesis title: Simulation-based design of multi-modal systems 36. Siavash Zoroofi (Visiting student from Chalmers University, Sweden) Thesis title: Modeling and simulation of vehicular power systems 37. Adam Chevrefils Thesis title: Modeling and design of an electric all-terrain vehicle 38. Keyhan Kobravi Thesis title: Optimization-enabled transient simulation for design of power circuits with multi-modal objective functions 39. Ali Mehrizi-Sani Thesis title: Advanced modulation techniques for power converters 40. Daniel Northcott Thesis title: Design, simulation and construction of a series hybrid electric vehicle
Teaching
Power Electronics (ECE 4370) [outline], [webpage] Advanced Power Electronics (ECE 7072) [outline], [webpage] Advanced Electric Machines and Drives (ECE 7030) [outline], [webpage]
Miscellaneous
I have interests (not expertise!) in a wide variety of other areas including, but not limited to, swimming, calligraphy, photography, music, poetry. The following links point to what I find interesting and note-worthy in these areas. Please note that this section of my webpage has no relation to my academic work. I have posted in these as I think others may find them interesting while browsing this webpage.
To be populated shortly.
Last modified: 4/8/2020