Ahmed Mohammed

Experience

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  Cairo University

  Sept 2006 - now

  As a Research Assistant:I was concerned with improving dynamic voltage stability of power systems with high-depth of penetration of induction motor loads using FACTS devices; Static VAR Compensator. During my work at Cairo University.- Analyzed the effects of reactive power throttling due to long transmission lines; - Examined the effect of load modeling on dynamic voltage stability of power systems; - Investigated the impacts of increased induction motor loads on power systems voltage stability; - Devised an algorithm for to optimize allocation of SVC to improve dynamic voltage stability; As a Teaching Assistant: - Taught tutorials independently in a classroom setting (Courses: Power systems analysis 1, Power systems analysis 2, Introduction to electrical engineering)- Worked as a lab instructor for Load flow, Transmission line design, Power System Stability, and Dynamic load characteristics experiments- Prepared assignments and lab material, and gave support to undergraduate students in projects Show less

  • Assistant Professor - On leave

    Jul 2017 - now

  • Graduate Research Assistant - On Leave

    Sept 2011 - Jun 2017

  • Graduate Research and Teaching Assistant

    Sept 2006 - Aug 2011
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  American University in Cairo

  Jun 2008 - Jun 2011

  Teaching Assistant

  I assisted in teaching of undergraduate courses that gave a general background about the electrical engineering to non-electrical engineering students.

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  Electrical Consulting and Contracting Company (ECCC)

  Aug 2008 - Aug 2011

  Electrical Engineer

  ECCC is a start-up consulting company with a wide scope that ranged from design of automatic control systems to analysis and assessment of electrical distribution networks for commercial and industrial projects in compliance with the Egyptian and International codes of practice. ECCC consultation services included but were not limited to:- Design of PLC-based automatic control systems,- Design and analysis of electromechanical systems,- Design of low voltage infrastructure networks, power panel boards and main distribution boards, and- Short circuit calculations and harmonics analysis of PV generation systems, Show less

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  Environic Inc

  Jan 2010 - Jun 2010

  Electrical Energy Consultant (Part-time)

  - Mapping of the Egyptian energy sector;- SWOT Analysis of the energy sector in Egypt;- Identification of the degree of competitiveness of each element of the Egyptian energy sector;- Review of Competitiveness of Egypt’s Energy Sector chapter (Chapter 4) in The Seventh Egyptian Competitiveness Report for the National Egyptian Competitiveness Council.

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  University of Toronto

  Sept 2011 - Dec 2018

  The Centre for Applied Power Electronics (CAPE) is focused on RD&D thrusts of power electronic apparatus and controls for electric power system applications. CAPE’s mission is to provide the state-of-the-art infrastructure and skilled personnel to facilitate university-industry collaborative research and development projects. CAPE’s R&D focus is the modernization of legacy electric power grid through integration of i) renewable generation and energy storage, microgrids and high-voltage direct-current (HVDC) grids and ii) utilization of wide area control and protection strategies.1) Wind Power Integration – Remedy Proposals- Proposed additional control functions for wind power plants supervisory controllers;- Designed active power modulation controllers for Wind power plants;- Augmented the wind power plant supervisory controller with a PSS-like control function;- Coordinated the operation of multiple wind power plants through Wide-Area Control to enhance the stability of power systems with high-depth of penetration of wind power;2) Embedded HVDC Grid in AC Power System- Assessed the modeling requirements of HVDC grids embedded in AC systems;- Devised a novel methodology to determine the boundary line between the different modeling requirements;- Assessed the impact of HVDC grid on low-frequency power oscillations of interconnected power system;- Assessed coherency requirements of AC power systems augmented with embedded HVDC grids.3) Cyber-Physical Security of Power Grids- Identified the vulnerabilities of AC power grids that can be used to drive it to instability;- Proposed a switching based algorithm that can be used exploit the system instability;- Assessed the extension of the devised algorithm to multiple coordinated switching points. Show less 1) Wind Power Plants (WPPs) Modeling- Developed enhanced generic hybrid nonlinear dynamic models of Type-3 and Type-4 WPPs;- Verified the performance of the developed models against the benchmark models implemented in PSS/E;- Developed linearized models of Type-3 and Type-4 WPPs for control design;- Developed a framework for time-domain simulation of AC power systems including multiple WPPs;2) Power System Coherency- Identified the main requirements of a potential identification methodology that overcomes the limitations of existing coherency assessment techniques;- Devised a new a dynamic coherency determination method for evolution of coherency phenomena;- Benchmarked the performance of the developed method against existing methods and showed its superiority.3) Wind Power Integration – Impacts Assessment- Assessed forecasted integration levels of wind power in Northeast Power Coordinating Council (NPCC) system till 2050;- Identified potential impacts of multiple WPPs on low-frequency power oscillations in NPCC system;- Identified the impacts of multiple WPPs on NPCC system coherency.4) Power Converter Applications in Power SystemsA) Active Power Filter (APF) - Investigated the impacts of harmonics on performance of nonlinear loads and utility; - Specified the requirements and size of the power converter for a shunt APF; - Devised the control algorithm for shunt APF - Implemented and tested the shunt APF for an industrial nonlinear load.B) Static VAR Compensator (SVC) - Specified the requirements and size of the power converter for a SVC; - Devised the control algorithm for SVC; - Implemented and tested the SVC to regulate the power factor of a dynamic industrial load.C) Three Phase Balancing - Specified the requirements and size of the power converter for a three-phase system balancer; - Devised the control algorithm for the balancer; - Implemented and tested the balancer for an industrial liner unbalanced load. Show less

  • Postdoctoral Research Fellow

    May 2016 - Dec 2018

  • Graduate Research Assistant

    Sept 2011 - Apr 2016
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  Schneider Electric

  Jan 2019 - now

  Team Lead, XW Pro firmware

  • Technical Manager - System Modelling and Test Automation

    Jun 2023 - now

  • Senior Power Electronics Controls Engineer

    Jan 2023 - Jun 2023

  • Power Electronics Controls Engineer

    Jan 2019 - Dec 2022