Assistant Professor

Contact InformationSahar Azad

Phone: 519-888-4567 x33974
Location: EIT 4017


Biography Summary

Sahar Pirooz Azad received her Ph.D. degree in Electrical Engineering, specialized in power systems, from University of Toronto, Toronto, Canada, in 2013. During her doctoral research, she focused on designing various control schemes for DC-segmented AC systems to prevent grid instability and large-scale blackouts. She was a post-doctoral fellow at the Centre for Applied Power Electronics (CAPE) at the University of Toronto in 2014. During her post-doctoral research, she focused on designing controllers with low communication requirements to improve multi-infeed HVDC systems stability. In 2015, she worked as an experienced researcher in the field of DC grid protection at the Katholieke Universiteit (KU) Leuven, Leuven, Belgium. Her research was a part of the multi-terminal DC grid for offshore wind (MEDOW) project; a Marie Curie initial training network funded by the European Commission. She worked as an Assistant Professor at the University of Alberta from October 2015 until December 2017. She joined the Department of Electrical and Computer Engineering at the University of Waterloo in 2018. Her research focuses on protection and control of power systems with embedded HVDC lines.

Research Interests

  • High voltage direct current (HVDC) transmission lines
  • Multi-terminal direct current (MTDC) grids
  • DC grid protection systems
  • AC and DC system interaction analysis
  • AC-DC systems control
  • Multi-infeed HVDC systems
  • AC-DC system modeling
  • Power system stability
  • Renewable energy resources


  • 2013, Doctorate, Electrical Engineering, University of Toronto


  • ECE 361 - Power Systems and Components
    • Taught in 2018, 2019
  • ECE 760 - Special Topics in Power Systems and High Voltage Engineering
    • Taught in 2018, 2019
  • ECE 6605PD - Power System Protection
    • Taught in 2019
* Only courses taught in the past 5 years are displayed.

Selected/Recent Publications

  • Azad, Sahar Pirooz and Van Hertem, Dirk, A fast local bus current-based primary relaying algorithm for hvdc grids, IEEE Transactions on Power Delivery, 32(1), 2017, 193 - 202
  • Mokhberdoran, Ataollah and Azad, S Pirooz and Van Hertem, Dirk and Silva, Nuno and Carvalho, Adriano, Protection of HVDC grids using unidirectional DC circuit breakers and fast local protection algorithm, , 2017
  • Azad, Sahar Pirooz and Taylor, Joshua Adam and Iravani, Reza, Decentralized supplementary control of multiple LCC-HVDC links, IEEE Transactions on Power Systems, 31(1), 2016, 572 - 580
  • Azad, Sahar Pirooz and Leterme, Willem and Van Hertem, Dirk, Fast breaker failure backup protection for HVDC grids, Electric Power Systems Research, 138, 2016, 99 - 105
  • Leterme, Willem and Azad, Sahar Pirooz and Van Hertem, Dirk, A local backup protection algorithm for HVDC grids, IEEE Transactions on Power Delivery, 31(4), 2016, 1767 - 1775