Process safety and environmental protection/Transactions of the Institution of Chemical Engineers. Part B, Process safety and environmental protection/Chemical engineering research and design/Chemical engineering research & design, Jun 1, 2024
LAP LAMBERT Academic Publishing eBooks, Nov 6, 2019
Coordination and control of power generation sources are essential tasks of modern smart grids. W... more Coordination and control of power generation sources are essential tasks of modern smart grids. With the increased penetration of power generation using renewable sources such as wind and solar, the complexity of the unit commitment and economic dispatch problems increases due to the stochastic nature of renewable power. A forecasting model is built to simulate the stochastic nature of renewable sources. A hybrid Markov method is proposed to forecast solar radiation, and an improved autoregressive integrated moving average (ARIMA) model is proposed to predict wind speed. For high penetration of renewable energy, storage media must be used to compensate for the fluctuation of natural sources. Nonlinear model predictive control (NMPC) is introduced to solve the power system ED problems with the presence of renewable energy resources. The work presents a novel mathematical formula for NMPC, integrated with a swarm optimization technique to describe the nonlinear behavior of the problem. This new formulation is called swarm model predictive control. The control model will be able to address the effect of the system disturbances and fluctuations, using a controlled ARIMA.
2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE), Oct 1, 2019
Increasing of ac/dc power supply in smart grids, losses, power factor, and harmonic problems aris... more Increasing of ac/dc power supply in smart grids, losses, power factor, and harmonic problems arise due to the presence of the converter. Therefore, this paper introduces a new topology of dual flyback converters operated in parallel to correct the power factor and reduces the harmonic and the losses. The first flyback converter is utilized as dc/dc stage used to regulate the output voltage by adjusting the duty cycle. While the second flyback converter is utilized as ac/dc stage, used for power factor correction and reducing the harmonics. The second flyback converter generates the input current to be in phase with the input voltage by regulating the variable frequency and switching period keeping the switching on-time fixed. This topology improves the voltage regulation even if the input voltage is reduced by approximately 60%, small circuit size, and reducing the total harmonic distortion. Besides, the circuit efficiency is increased by operating the dual converters at discontinuous current mode also recovering the stored energy in the leakage inductance of the coupled inductor. Finally, a prototype platform which has the ability to deal with universal input $80 \sim 260 \mathrm{V}_{\mathrm{rms}}$ is carried out. The measurements have verified the theoretical analysis to verify the effectiveness of the proposed system.
In this work, a hybrid system is comprised of wind turbines (WT) and photovoltaic (PV) panels to ... more In this work, a hybrid system is comprised of wind turbines (WT) and photovoltaic (PV) panels to generate green Hydrogen via water electrolysis. Consideration is given to the influence of five electrical power generation scenarios on system performance and Hydrogen production cost. This study adopts the solar radiation, wind speed, and ambient temperature for Mersa-Matruh in Egypt. The system performance is studied using MATLAB-Simulink over one year. The winter months have high wind speed and low sun radiation compared to other months, whereas additional months have high solar radiation and lower wind speed than the winter months. The findings show that the amount of Hydrogen produced for all scenarios varies from 12,340 m3 to 13,748 m3 per year. The system efficiency and LCOH are 7.974% and 3.67 USD/kg, 9.56%, and 3.97 USD/kg, 10.7% and 4.12 USD/kg, 12.08%, and 4.3 USD/kg, and 16.23% and 4.69 USD/kg for scenarios 1 to 5, respectively. Finally, the introduced system can reduce CO2 ...
Process safety and environmental protection/Transactions of the Institution of Chemical Engineers. Part B, Process safety and environmental protection/Chemical engineering research and design/Chemical engineering research & design, Jun 1, 2024
LAP LAMBERT Academic Publishing eBooks, Nov 6, 2019
Coordination and control of power generation sources are essential tasks of modern smart grids. W... more Coordination and control of power generation sources are essential tasks of modern smart grids. With the increased penetration of power generation using renewable sources such as wind and solar, the complexity of the unit commitment and economic dispatch problems increases due to the stochastic nature of renewable power. A forecasting model is built to simulate the stochastic nature of renewable sources. A hybrid Markov method is proposed to forecast solar radiation, and an improved autoregressive integrated moving average (ARIMA) model is proposed to predict wind speed. For high penetration of renewable energy, storage media must be used to compensate for the fluctuation of natural sources. Nonlinear model predictive control (NMPC) is introduced to solve the power system ED problems with the presence of renewable energy resources. The work presents a novel mathematical formula for NMPC, integrated with a swarm optimization technique to describe the nonlinear behavior of the problem. This new formulation is called swarm model predictive control. The control model will be able to address the effect of the system disturbances and fluctuations, using a controlled ARIMA.
2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE), Oct 1, 2019
Increasing of ac/dc power supply in smart grids, losses, power factor, and harmonic problems aris... more Increasing of ac/dc power supply in smart grids, losses, power factor, and harmonic problems arise due to the presence of the converter. Therefore, this paper introduces a new topology of dual flyback converters operated in parallel to correct the power factor and reduces the harmonic and the losses. The first flyback converter is utilized as dc/dc stage used to regulate the output voltage by adjusting the duty cycle. While the second flyback converter is utilized as ac/dc stage, used for power factor correction and reducing the harmonics. The second flyback converter generates the input current to be in phase with the input voltage by regulating the variable frequency and switching period keeping the switching on-time fixed. This topology improves the voltage regulation even if the input voltage is reduced by approximately 60%, small circuit size, and reducing the total harmonic distortion. Besides, the circuit efficiency is increased by operating the dual converters at discontinuous current mode also recovering the stored energy in the leakage inductance of the coupled inductor. Finally, a prototype platform which has the ability to deal with universal input $80 \sim 260 \mathrm{V}_{\mathrm{rms}}$ is carried out. The measurements have verified the theoretical analysis to verify the effectiveness of the proposed system.
In this work, a hybrid system is comprised of wind turbines (WT) and photovoltaic (PV) panels to ... more In this work, a hybrid system is comprised of wind turbines (WT) and photovoltaic (PV) panels to generate green Hydrogen via water electrolysis. Consideration is given to the influence of five electrical power generation scenarios on system performance and Hydrogen production cost. This study adopts the solar radiation, wind speed, and ambient temperature for Mersa-Matruh in Egypt. The system performance is studied using MATLAB-Simulink over one year. The winter months have high wind speed and low sun radiation compared to other months, whereas additional months have high solar radiation and lower wind speed than the winter months. The findings show that the amount of Hydrogen produced for all scenarios varies from 12,340 m3 to 13,748 m3 per year. The system efficiency and LCOH are 7.974% and 3.67 USD/kg, 9.56%, and 3.97 USD/kg, 10.7% and 4.12 USD/kg, 12.08%, and 4.3 USD/kg, and 16.23% and 4.69 USD/kg for scenarios 1 to 5, respectively. Finally, the introduced system can reduce CO2 ...
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