Prof. Waheed Sabry

Millitary Technical College, Electrical Power and Energy Department, Faculty Member

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Prof. W. Sabry earned a B.Sc. in Electrical Engineering, June 1987 from Electrical Power and Energy Department, Military Technical College (MTC), Cairo, Egypt. In Jan. 1993, he earned a M.Sc. in Electrical Engineering from MTC, and a Ph.D. in Electrical Engineering from MTC, in Feb. 1998. In June 1995, he earned a Diploma in Statistics, Institute of Statistical Studies and Researches (ISSR), Cairo University, Cairo, Egypt and in June 2002, he earned a M.Sc. in Mathematical Statistics, ISSR. In 2001, he joined the Bradley Department of Electrical and Computer Engineering as a Post-doctoral researcher in Virginia Tech. University, VA, USA. In Jan. 2005, he earned the degree of Assoc. Prof. in Electrical Engineering. In Jan. 2015, he earned the degree of Full Prof. in Electrical Engineering. From June 2001 to Jan. 2011, he was the head of Electrical Power and Energy Department, MTC. From Jan. 2005 till now, he is the head of Electrical Power and Energy Department scientific council, MTC. From Sep. 2015 to Aug. 2016, he was the Dean of the High Institute for Engineering and Technology, Luxor, Egypt. From Sep. 2016 to Jan. 2020, he was the Head of Electrical Power and Energy Department, Valley Higher Institute for Engineering and Technology, Science Valley Academy (SVA), Cairo, Egypt. From Feb. 1, 2020 till Sep. 2020, he is a Prof. of Electrical Engineering in the Higher Technological Institute (HTI), 10th of Ramadan city, Sharqia, Egypt. From Oct. 2020 till now, he is the Dean of The High Institute of Engineering and Technology in King Marriott, Alexandria, Egypt. His research interests are in the area of power system control and stability.
Phone: 01001455463
Address: New Cairo
5th Settlement

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Torque ripples reduction of electric vehicle synchronous reluctance motor drive using the strong action controller

Ain Shams Engineering Journal

Smart, Micro and Nano-grids are the future of electric power systems. In parallel with this futur... more Smart, Micro and Nano-grids are the future of electric power systems. In parallel with this future, electric vehicles (EVs) take a great deal of attention, as they are one of the important elements in these systems. Also, with the passage of time, the development continues in the technology of manufacturing EVs. Since the electric motor is the main component in these vehicles, research and development is continuing to find the most suitable motors that can work in such vehicles. The synchronous reluctance motor (SynRM) is the newest motor used in this industry. SynRMs faces different challenges, one of which is the torque ripples. Different trials were used to reduce or eliminate or minimize these ripples. Most of previous work focuses on the SynRM design parameters to reduce torque ripples. In this paper, the control methodology and the strong action controller (SAC) are used as a tool to reduce these ripples. The simulation results showed the effectiveness of the application of the proposed SAC in ripples factor reduction. This reduction represents a new contribution over the already existed techniques.

Torque ripples reduction of electric vehicle synchronous reluctance motor drive using the strong action controller

Ain Shams Engineering Journal, 2023

Synchronous Reluctance Motors Torque Ripples Reduction using Feedback Cascaded P-I-I Controller

2022 23rd International Middle East Power Systems Conference (MEPCON)

Synchronous Reluctance Motors (SynRMs) -or Reluctance Synchronous Motors (RSMs)- have recently be... more Synchronous Reluctance Motors (SynRMs) -or Reluctance Synchronous Motors (RSMs)- have recently become an important component of the electric vehicles’ (EVs) industry when it used as a variable speed AC drives, due to its excellent features of high ratio of power to weight and torque to current, high efficiency and ruggedness. One of the major SynRMs’ problems is the Torque Ripples (TRs). In this paper and to mitigate or minimize these TRs, a feedback cascaded P-I-I controller is used and worked as an Active Ripple Filter. Simulation results showed its effectiveness in TRs minimization.

Power Oscillation Damping using Sine Cosine Algorithm based Tilt-Derivative Tilt-Integral Automatic Voltage Regulator

2022 23rd International Middle East Power Systems Conference (MEPCON)

In the current paper, a hybrid Tilt‐Derivative Tilt‐Integral (TD-TI) controller is added to the s... more In the current paper, a hybrid Tilt‐Derivative Tilt‐Integral (TD-TI) controller is added to the synchronous generator automatic voltage regulation (AVR) system to improve the rotor angle stability of a three-machine system and damp the power system oscillations. Moreover, the Sine Cosine algorithm (SCA), a relatively new robust optimization technique is used to tune the proposed controller parameters. The SCA based TD-TI controller results are presented in the form of time domain simulation using MATLAB. The proposed controller response is compared with the normal AVR excitation controller on the IEEE three-machine system. Simulation results show the effectiveness of the proposed controller in damping the oscillations of rotor speed and terminal voltage of the three machines when the system is subjected to three phase short circuit.

Power Oscillation Damping using Sine Cosine Algorithm based Tilt-Derivative Tilt-Integral Automatic Voltage Regulator

2022 23rd International Middle East Power Systems Conference (MEPCON), 2022

Synchronous Reluctance Motors Torque Ripples Reduction using Feedback Cascaded P-I-I Controller

2022 23rd International Middle East Power Systems Conference (MEPCON), 2022

A strong action power system stabilizer employment to improve large scale power systems' stability

Journal of Electrical Systems, 2021

Latest computer techniques improvements make developed control procedures implementation achievab... more Latest computer techniques improvements make developed control procedures implementation achievable at the generating level. Till now, power system stabilizers (PSSs) can be considered as one of these advanced control strategies. PSSs were used for a long time to dampen most types of system oscillations. In the current paper, PSSs used are a new design based on the idea of strong action (SA) controllers. Previous studies concerning power systems that accompanied by the assistance of the proposed SA-PSS were carried out in two different cases: single synchronous machine and multimachine power systems. In the current paper, the SA-PSS was used in a real part of the 500 kV Egyptian electricity grid that containing the scheduled El-Dabaa nuclear power station. The simulation results demonstrated the adequacy of the utilization of the suggested SA controller based PSS. SA-PSS can accomplish system stability which permits expanding essentially the stability margin at the steady-state interval, damping oscillations adequately, and stabilizing subtransient and transient processes. Additionally, it aids to avoid the abrupt reductions of all power system nodes' voltages. This novel approach demonstrated its effectiveness in mitigating both of machine frequency and voltage fluctuations, which represents a new voltage/frequency control method. Consequently, the enhanced stability
of the system is accomplished.

Prof. Waheed Sabry

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