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Mr. Waseem El Sayed
University of Zielona Góra

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Research Keywords & Expertise

0 Electromagnetic Compatibility
0 electromagnetic compatibility (EMC) analysis
0 Control and monitoring application
0 Fault Detection and Diagnostics
0 Electromagnetic interference

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Fault Detection and Diagnostics
Electromagnetic interference
Electromagnetic Compatibility
electromagnetic compatibility (EMC) analysis

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Journal article
Published: 12 June 2021 in Electronics
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Power line communication (PLC) is increasingly emerging as an important communication technology for the smart-grid environment. As PLC systems use the existing infrastructure, they are always exposed to conducted electromagnetic interference (EMI) from switching mode power converters, which need to be tightly controlled to meet EMC regulations and to ensure the proper operation of the PLC system. For this purpose, spread-spectrum modulation (SSM) techniques are widely adopted to decrease the amplitude of the generated EMI from the power converters so as to comply with EMC regulations. In this paper, the influence of a spread-spectrum-modulated SiC-based buck converter on the G3-PLC channel performance is described in terms of channel capacity reduction using the Shannon–Hartley equation. The experimental setup was implemented to emulate a specific coupling path between the power and communication circuits and the channel capacity reduction was evaluated by the Shannon–Hartley equation in several operating scenarios and compared with the measured frame error rate. Based on the obtained results, SSM provides the EMI spectral peak amplitude reduction required to pass the electromagnetic compatibility (EMC) tests, but results in increased EMI-induced channel capacity degradation and increased transmission error rate in PLC systems.

ACS Style

Waseem Sayed; Piotr Lezynski; Robert Smolenski; Niek Moonen; Paolo Crovetti; Dave Thomas. The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel. Electronics 2021, 10, 1416 .

AMA Style

Waseem Sayed, Piotr Lezynski, Robert Smolenski, Niek Moonen, Paolo Crovetti, Dave Thomas. The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel. Electronics. 2021; 10 (12):1416.

Chicago/Turabian Style

Waseem Sayed; Piotr Lezynski; Robert Smolenski; Niek Moonen; Paolo Crovetti; Dave Thomas. 2021. "The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel." Electronics 10, no. 12: 1416.

Journal article
Published: 02 June 2021 in Energies
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Power line communication (PLC), which is often used in advanced metering infrastructure (AMI), may be disturbed by adjacent high-power converters. Due to the inherent features of this type of communication, classic methods of improving communication reliability (filtration and circuit separation) cannot be fully applied. Information coding (modulation) methods are used in PLC to increase the data transfer rate and improve noise immunity. Random modulations (RanM) are used in converters to lower emission levels. Therefore, we investigate how the converters’ modulation parameters and coding methods may affect PLC communication reliability in the paper. To this end, we employ an experimental approach. In particular, the analysis of the influence of deterministic modulation (DetM) and (RanM) on the performance of narrowband G3-PLC is shown. We emulated an actual situation where EMI generated by the DC/DC converter disturbed the PLC transmission. The experimental results show the transmission error rates for different operating scenarios. The natural (experimental) system results, due to the complexity of the disturbing signals, differ from the literature data obtained by simulation for normalized signals.

ACS Style

Waseem Sayed; Piotr Lezynski; Robert Smolenski; Amr Madi; Marcin Pazera; Adam Kempski. Deterministic vs. Random Modulated Interference on G3 Power Line Communication. Energies 2021, 14, 3257 .

AMA Style

Waseem Sayed, Piotr Lezynski, Robert Smolenski, Amr Madi, Marcin Pazera, Adam Kempski. Deterministic vs. Random Modulated Interference on G3 Power Line Communication. Energies. 2021; 14 (11):3257.

Chicago/Turabian Style

Waseem Sayed; Piotr Lezynski; Robert Smolenski; Amr Madi; Marcin Pazera; Adam Kempski. 2021. "Deterministic vs. Random Modulated Interference on G3 Power Line Communication." Energies 14, no. 11: 3257.

Journal article
Published: 11 May 2021 in Sensors and Actuators A: Physical
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The time measurement efficiency of the partial discharge (PD) relies on the signal-to-noise ratio (SNR) and gain of the high-frequency current transformer (HFCT) sensor. However, the PD's time measurement efficiency decreases with the noise coupled to the HFCT in onsite measurements. To overcome that setback, this paper proposes one pre-processing, through modelling and simulation, considering the physical effects, features of the electrical circuit and coil construction parameters of the HFCT. The main goal is to reach reasonable high SNR under the strong influence of background noises. This investigation aims to validate the hypothesis of improvement or deterioration of the HFCT signal response through a transfer function optimization. This research effort's contributions are threefold: 1. Generation of PD pulse signal and noise addition; 2. HFCT modelling, simulation, and frequency response analysis; and 3. Models performance evaluation and validation of hypothesis. In conclusion, the pre-processing approach stands out as a means to robustify and provide freedom to the electric utility, making up for an eventual need to redefine the physical and geometrical parameters of the HFCT sensor under specific background noise for maintenance tests purpose. According to a cyber-physical system framework, experiments corroborate the project's goals to contribute to the PD pattern monitoring in onsite measurements and incorporate robustness to signals with low SNRs.

ACS Style

Douglas Nascimento; Shady S. Refaat; Hermes Loschi; Yuzo Iano; Euclides Chuma; Waseem El-Sayed; Amr Madi. Current sensor optimization based on simulated transfer function under partial discharge pulses. Sensors and Actuators A: Physical 2021, 329, 112825 .

AMA Style

Douglas Nascimento, Shady S. Refaat, Hermes Loschi, Yuzo Iano, Euclides Chuma, Waseem El-Sayed, Amr Madi. Current sensor optimization based on simulated transfer function under partial discharge pulses. Sensors and Actuators A: Physical. 2021; 329 ():112825.

Chicago/Turabian Style

Douglas Nascimento; Shady S. Refaat; Hermes Loschi; Yuzo Iano; Euclides Chuma; Waseem El-Sayed; Amr Madi. 2021. "Current sensor optimization based on simulated transfer function under partial discharge pulses." Sensors and Actuators A: Physical 329, no. : 112825.

Conference paper
Published: 23 September 2020 in 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE
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The rapid growth of renewable energy applications increases the complexity of the system, followed by the increase of using fast switching converters in the smart grid. Thus, the probability of electromagnetic interference between the system elements may cause a lot of communication problems between smart grid elements. On the other hand, the use of a SiC-based converter gets a great interest due to its fast switching capability and loss reduction. This paper focuses on studying the difference between the influence of dc Si-based transistor and SiC-based transistor on the performance of narrowband G3-PLC. The experimental setup was implemented to emulate a real situation, and tests were performed to show the results at different operating conditions.

ACS Style

Waseem El Sayed; Hermes Loschi; C.L. Lok; Piotr Lezynski; Robert Smolenski. Prospective Analysis of the effect of Silicon based and Silicon-Carbide based Converter on G3 Power Line Communication. 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2020, 1 -6.

AMA Style

Waseem El Sayed, Hermes Loschi, C.L. Lok, Piotr Lezynski, Robert Smolenski. Prospective Analysis of the effect of Silicon based and Silicon-Carbide based Converter on G3 Power Line Communication. 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE. 2020; ():1-6.

Chicago/Turabian Style

Waseem El Sayed; Hermes Loschi; C.L. Lok; Piotr Lezynski; Robert Smolenski. 2020. "Prospective Analysis of the effect of Silicon based and Silicon-Carbide based Converter on G3 Power Line Communication." 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE , no. : 1-6.

Conference paper
Published: 23 September 2020 in 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE
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FPGA became a low-cost platform providing the possibility to design new "EMC friendly" control techniques for power electronics. However, some of the functions required in the power electronic control system are difficult to implement in FPGA. The main challenges are connected to the fixed-point operation, and the need to adjust the dynamic range of numbers. To provide design insights on this topic, the paper presents an FPGA-based random modulation technique intended for DC/DC converter for harmonic reduction. The presented random technique is compared with deterministic PWM in terms of harmonics reduction and FPGA hardware resources. The theoretical algorithms, hardware details, and experimental results are presented and discussed.

ACS Style

Hermes Loschi; Robert Smolenski; Piotr Lezynski; Waseem El Sayed; Douglas Nascimento. Reduction of Conducted Emissions in DC/DC Converters with FPGA-based Random Modulation. 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2020, 1 -6.

AMA Style

Hermes Loschi, Robert Smolenski, Piotr Lezynski, Waseem El Sayed, Douglas Nascimento. Reduction of Conducted Emissions in DC/DC Converters with FPGA-based Random Modulation. 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE. 2020; ():1-6.

Chicago/Turabian Style

Hermes Loschi; Robert Smolenski; Piotr Lezynski; Waseem El Sayed; Douglas Nascimento. 2020. "Reduction of Conducted Emissions in DC/DC Converters with FPGA-based Random Modulation." 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE , no. : 1-6.

Journal article
Published: 09 June 2020 in Energies
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Since the permeant magnet synchronous generator (PMSG) has many applications in particular safety-critical applications, enhancing PMSG availability has become essential. An effective tool for enhancing PMSG availability and reliability is continuous monitoring and diagnosis of the machine. Therefore, designing a robust fault diagnosis (FD) and fault tolerant system (FTS) of PMSG is essential for such applications. This paper describes an FD method that monitors online stator winding partial inter-turn faults in PMSGs. The fault appears in the direct and quadrature (dq)-frame equations of the machine. The extended Kalman filter (EKF) and unscented Kalman filter (UKF) were used to detect the percentage and the place of the fault. The proposed techniques have been simulated for different fault scenarios using Matlab®/Simulink®. The results of the EKF estimation responses simulation were validated with the practical implementation results of tests that were performed with a prototype PMSG used in the Arab Academy For Science and Technology (AAST) machine lab. The results showed impressive responses with different operating conditions when exposed to different fault states to prevent the development of complete failure.

ACS Style

Waseem El Sayed; Mostafa Abd El Geliel; Ahmed Lotfy. Fault Diagnosis of PMSG Stator Inter-Turn Fault Using Extended Kalman Filter and Unscented Kalman Filter. Energies 2020, 13, 2972 .

AMA Style

Waseem El Sayed, Mostafa Abd El Geliel, Ahmed Lotfy. Fault Diagnosis of PMSG Stator Inter-Turn Fault Using Extended Kalman Filter and Unscented Kalman Filter. Energies. 2020; 13 (11):2972.

Chicago/Turabian Style

Waseem El Sayed; Mostafa Abd El Geliel; Ahmed Lotfy. 2020. "Fault Diagnosis of PMSG Stator Inter-Turn Fault Using Extended Kalman Filter and Unscented Kalman Filter." Energies 13, no. 11: 2972.

Conference paper
Published: 01 December 2018 in 2018 Twentieth International Middle East Power Systems Conference (MEPCON)
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Permanent magnet synchronous generators (PMSGs) can be considered as one of the most efficient utilized generator in modern wind turbines, for a wide range of wind turbines power. This paper tackles the implementation of a prototype low speed PMSG unit that can be used in low power low speed applications, followed by, a study of the performances of the implemented machine in three loading conditions: no-load condition, standalone connected to three phase resistive load and grid connected through a commercial inverter. The simulation based on Finite Element Method (FEM) is introduced to verify the design of this generator before practical implementation. Moreover, the experimental results shows and analyses the machine performances with various operating conditions, including Maximum Power Point Tracking (MPPT) capability.

ACS Style

Ahmed Hebala; Waseem Wafik; Walid M.A. Ghoneim; Hamdy A. Ashour. Experimental Analysis of a Prototype Low Speed PMSG Unit with Different Loading Conditions. 2018 Twentieth International Middle East Power Systems Conference (MEPCON) 2018, 1134 -1139.

AMA Style

Ahmed Hebala, Waseem Wafik, Walid M.A. Ghoneim, Hamdy A. Ashour. Experimental Analysis of a Prototype Low Speed PMSG Unit with Different Loading Conditions. 2018 Twentieth International Middle East Power Systems Conference (MEPCON). 2018; ():1134-1139.

Chicago/Turabian Style

Ahmed Hebala; Waseem Wafik; Walid M.A. Ghoneim; Hamdy A. Ashour. 2018. "Experimental Analysis of a Prototype Low Speed PMSG Unit with Different Loading Conditions." 2018 Twentieth International Middle East Power Systems Conference (MEPCON) , no. : 1134-1139.

Conference paper
Published: 01 November 2017 in 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT)
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The induction motor is widely used in industrial applications, respectively, the fault detection and isolation is very important for the continuity of industrial process. The stator turns faults are one of the common faults that may lead to a massive failure which confirms the early detection of the fault to take the best action. This paper presents the fault diagnosis of stator turns faults using extended Kalman filter technique to estimate the percentage of short circuit turns ratio in each phase. The simulation is implemented using MATLAB/Simulink, the technique is tested in various load conditions. The simulation results show that the proposed technique is effective and robust, it shows an accurate estimation in the presence of noises to take action prevent the propagation of fault.

ACS Style

Waseem. W. Saad; M. Abd El-Geliel; Ahmed Lotfy. IM stator winding faults diagnosis using EKF. 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT) 2017, 34 -39.

AMA Style

Waseem. W. Saad, M. Abd El-Geliel, Ahmed Lotfy. IM stator winding faults diagnosis using EKF. 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT). 2017; ():34-39.

Chicago/Turabian Style

Waseem. W. Saad; M. Abd El-Geliel; Ahmed Lotfy. 2017. "IM stator winding faults diagnosis using EKF." 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT) , no. : 34-39.

Conference paper
Published: 01 November 2017 in 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT)
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In this paper, the design and implementation of biodiesel process production unit controlled by a Programmable Logic Controller (PLC) and powered by photovoltaic (PV) is introduced. The main idea here is based on getting the biodiesel as a chemical reaction process of transestrefication offatty oils from wasted used cooking oil. This process requires continuous measurement from different sensors and take long hours to be finished. Hence, implementing a well-designed automated system is essential, while the need for operator supervision is greatly minimized, which in turn permits the labor cost to be reduced and optimizing the repeatability and efficiency of the whole process. The proposed unit utilizes an HMI with different SCADA facilities; hence, the operator can readily and efficiently take real time action on the flow of the process. The required electrical energy of the unit has been designed to be supplied through PV panels, which permits the production of the bio-diesel without the need for any other power source. The overall unit has been tested and found to be very reliable with significant energy efficient operation.

ACS Style

Waseem W. Saad; Ahmed Hebala; Hamdy A. Ashour. Net-zero-energy automated bio-diesel production unit. 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT) 2017, 79 -84.

AMA Style

Waseem W. Saad, Ahmed Hebala, Hamdy A. Ashour. Net-zero-energy automated bio-diesel production unit. 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT). 2017; ():79-84.

Chicago/Turabian Style

Waseem W. Saad; Ahmed Hebala; Hamdy A. Ashour. 2017. "Net-zero-energy automated bio-diesel production unit." 2017 Intl Conf on Advanced Control Circuits Systems (ACCS) Systems & 2017 Intl Conf on New Paradigms in Electronics & Information Technology (PEIT) , no. : 79-84.

Conference paper
Published: 01 October 2016 in 2016 20th International Conference on System Theory, Control and Computing (ICSTCC)
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This paper presents a fault diagnosis (FD) method for on line monitoring of stator winding partial inter-turn fault and severe faults, in permanent magnet synchronous generator (PMSG) used in shaft generator system in marine applications. The faulty machine is represented in state space model based on the dq-frame transformation. The Extended Kalman Filter (EKF) parameters estimation technique is used to estimate the value of stator winding short-circuit parameters of the machine. The proposed technique has been simulated for different fault scenarios using Matlab®/Simulink®. Simulation results show that the proposed technique is robust and effective. Moreover it can be applied at different operating conditions to prevent development of complete failure.

ACS Style

Waseem Wafik; Mostafa Abd El-Geliel; Ahmed Lotfy. PMSG fault diagnosis in marine application. 2016 20th International Conference on System Theory, Control and Computing (ICSTCC) 2016, 626 -631.

AMA Style

Waseem Wafik, Mostafa Abd El-Geliel, Ahmed Lotfy. PMSG fault diagnosis in marine application. 2016 20th International Conference on System Theory, Control and Computing (ICSTCC). 2016; ():626-631.

Chicago/Turabian Style

Waseem Wafik; Mostafa Abd El-Geliel; Ahmed Lotfy. 2016. "PMSG fault diagnosis in marine application." 2016 20th International Conference on System Theory, Control and Computing (ICSTCC) , no. : 626-631.