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Ilhan Kocar
B.Sc., M.Sc. (ODTU, Ankara), Ph.D. (Poly)

Research interests and affiliations

Research interests
  • Power systems, smart grid, energy conversion and distribution, simulation, analysis and experimental characterization
  • Numerical methods for offline and real-time simulation of power systems and electric circuits
  • Electromagnetic and electromechanical transients, voltage stability
  • Distribution system analysis and modeling, multiphase power flow and optimization
  • Integration of inverter-based resources and their impact on the security and stability of power systems
  • Transmission lines and cables: transient and frequency dependent modeling, and thermal analysis
Expertise type(s) (NSERC subjects)
  • 2501 Power systems
  • 2502 Electromagnetics, compatibility and interference
  • 2503 Circuit theory
  • 2516 Energy conversion and distribution

Publications

Recent publications
Journal article
Xue, H., Mahseredjian, J., Ametani, A., Morales-Rodriguez, J. & Kocar, I. (2021). Generalized Formulation of Overhead Line Parameters for Multi-Layer Earth. IEEE Transactions on Power Delivery, 11 pages. Retrieved from https://doi.org/10.1109/TPWRD.2021.3049595
Journal article
Becerra, J., Kocar, I., Sheshyekani, K. & Mahseredjian, J. (2021). Passivity enforcement of wideband line model through coupled perturbation of residues and poles. Electric Power Systems Research, 190, 8 pages. Retrieved from https://doi.org/10.1016/j.epsr.2020.106798
Journal article
Abusalah, A., Saad, O., Mahseredjian, J., Karaagac, U. & Kocar, I. (2020). Accelerated Sparse Matrix-Based Computation of Electromagnetic Transients. IEEE Open Access Journal of Power and Energy, 7, 13-21. Retrieved from https://doi.org/10.1109/OAJPE.2019.2952776
Journal article
Cervantes Martinez, M., Kocar, I., Mahseredjian, J. & Ramirez, A. (2020). Accurate and Reduced Order Identification of Propagation Function for Electromagnetic Transient Analysis of Cables. IEEE Transactions on Power Delivery, 35(2), 968-976. Retrieved from https://doi.org/10.1109/TPWRD.2019.2932424

Biography

Ilhan received the PhD degree in Electrical Engineering in 2009 from Polytechnique/University of Montreal. He has 18 years of academic and industrial experience in different fields of electric power and energy systems gained in North America, Europe, and Asia.

Ilhan’s career highlights include breakthrough contributions to scientific simulation tools and development of planning, control, and modeling solutions for large-scale grid integration of renewables. The range of modeling solutions is from steady state to electromagnetic transients. He has accomplished research and grid-consulting projects that cover design, rigorous mathematical modeling, analysis, and experimental characterization. Con Edison of New York, National Grid in the UK, New York Power Authority and RTE in France are among the organizations that he has had collaborations with. 

He has received best paper awards in IPST conferences and in the 2020 IEEE Power and Energy Society (PES) General Meeting.

The overall impact of his research goes beyond scientific databases; the resulting technological applications support thousands of practicing engineers and researchers in their daily work.  Professional grade tool developers such as CYME, OPAL-RT, EMTP, ASPEN and Siemens PSS-CAPE adopted his solutions.

Ilhan chairs the IEEE working group on field-measured overvoltages since 2018. He has been recently appointed by Standards Council of Canada as a member to IEC – SC 8A. His task is to lead the development of a technical report discussing fault analysis in grids with high share of converter-based resources. He is also an invited member of CIGRE C4.60, the working group titled “Generic EMT-Type Modeling of Inverter-Based Resources”.

Under contract to the Electric Power Research Institute (EPRI), USA, Ilhan has been the principal investigator at Polytechnique of the research project on the impact of renewables on system protection since 2014.

He is an associate editor of Journal of Modern Power Systems and Clean Energy  jointly published by IEEE and State Grid China. He was the guest editor of the Special Issue of Energies titled Distribution System Modeling and Analysis in 2020. He was a guest editor of IEEE Transactions on Power Delivery in 2016.

Supervision at Polytechnique

COMPLETED

  • Ph.D. Thesis (8)

    • Abusalah, A. (2019). Accelerated Simulation of Large Scale Power System Transients (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/3862/
    • Berger, M. (2019). Contributions to Modeling, Simulation, and Analysis of Three-Phase Dual Active Bridge Converters for Dc-Grid Integration (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/3992/
    • Cai, M. (2019). Parallel and Multistep Simulation of Power System Transients (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/4059/
    • Cervantes Martinez, M. (2019). Accurate and Efficient Simulation of Electromagnetic Transients Using Frequency Dependant Line and Cable Models (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/3971/
    • Morales Rodriguez, J. (2019). Computation of Frequency Dependent Network Equivalents Using Vector Fitting, Matrix Pencil Method and Loewner Matrix (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/3913/
    • Kauffmann, T. (2018). Modeling of Wind Parks for Steady State Short Circuit Studies (Ph.D. Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/3256/
    • Centindag, B.E. (2016). Development of models and a unified platform for multiphase load flow analysis and dynamic state estimation of large distribution systems with secondary grids (Ph.D. Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2432/
    • Silva Lafaia Simoes, M.I. (2016). Contributions to modeling and simulation of HVAC cables using field test results (Ph.D. Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2350/
  • Master's Thesis (13)

    • Filliot, L. (2017). Calcul des paramètres électriques des câbles avec la dépendance fréquentielle par la méthode des moments et l'opérateur d'admittance surfacique (MoM-SO) (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2476/
    • Omoruyi, E. (2017). Modélisation du comportement transitoire des génératrices distribuées raccordées au réseau électrique de distribution à l'aide de convertisseurs (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2948/
    • Yalaoui, N. (2017). Calcul de la matrice d'impédance linéique du système ligne-câble avec la méthode des éléments finis (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2764/
    • Abdellaoui, A. (2015). Processus de modélisation et étude des orages géomagnétiques dans les réseaux électriques : impact sur le réseau de transport d'Hydro-Québec (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2004/
    • Berger, M. (2015). First EMTP-RV Benchmark for Off-Line Simulation of Rapid Transit Train DC Auxiliary Systems (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1943/
    • Hosseinimanesh, A. (2015). A Novel Approach to Determine Harmonic Distortions in Unbalanced Networks and Harmonic Filter Planning in Industrial Systems (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1962/
    • Gueye, A. (2014). Études des contrôles des réseaux de distribution dans l'analyse d'écoulement de puissance multiphasé (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1454
    • Houari, M. (2014). Estimateur d'état basé sur les courants pour les réseaux de distribution (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1390
    • Kauffmann, T. (2014). Modèle à dépendance fréquentielle de lignes et câbles utilisant la méthode des caractéristiques (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1418
    • Magloire, A. (2014). Renforcement de la passivité des modèles de lignes et câbles à l'aide du repositionnement des pôles et de la perturbation des résidus (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1393
    • Goswamy, N. (2013). Wideband Transfer Function Identification Using MAGVF (Magnitude Vector Fitting) Method (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1224
    • Ramirez, L.D. (2013). Estimation d'état des réseaux électriques de distribution maillés (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/1330
    • Lacroix, J.-S. (2012). Multiphase Short-Circuit Analysis Solver in Phase Domain Using a Modified-Augmented-Nodal Analysis Approach (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/810