ADEL M Sharaf - Academia.edu (original) (raw)
Papers by ADEL M Sharaf
Nowadays, Photovoltaic-PV Farms/ Parks and large PV-Smart Grid Interface Schemes are emerging and... more Nowadays, Photovoltaic-PV Farms/ Parks and large PV-Smart Grid Interface Schemes are emerging and commonly utilized in Renewable Energy distributed generation. However, PV-hybrid-Dc-Ac Schemes using interface power electronic converters usually has negative impact on power quality and stabilization of modern electrical network under load excursions and network fault conditions in smart grid. Consequently, robust FACTS based interface schemes are required to ensure efficient energy utilization and stabilization of bus voltages as well as limiting switching/fault onrush current condition. FACTS devices are also used in smart grid-Battery Interface and Storage Schemes with PV-Battery Storage hybrid systems as an elegant alternative to renewable energy utilization with backup battery storage for electric utility energy and demand side management to provide needed energy and power capacity under heavy load conditions. The paper presents a robust interface PV-Li-Ion Battery Storage Interface Scheme for Distribution/Utilization Low Voltage Interface using FACTS stabilization enhancement and dynamic maximum PV power tracking controllers.
Digital simulation and validation of the proposed scheme is done using MATLAB/Simulink software environment for Low Voltage- Distribution/Utilization system feeding a hybrid Linear-Motorized inrush and nonlinear type loads from a DC-AC Interface VSC-6-pulse Inverter Fed from the PV Park/Farm with a back-up Li-Ion Storage Battery.
Renewable energy and green energy utilization of viable resources have emerged as an economic rea... more Renewable energy and green energy utilization of viable resources have emerged as an economic reality for electric utilities as a way to control demand and establish smart grid storage for distribution and utilization grid systems. Smart grid networks using distributed generation-based (DG) power plants (e.g. solar photovoltaic (PV) plants) are emerging with the afferent problems of robust decoupled interface and power quality problems.
The paper presents a novel FACTS-based Interface scheme using VSI-6 Pulse Scheme with an added Switched Filter Compensation (SFC) Scheme for enhancement of power quality and ensuring a flexible decoupled robust DC-AC interface to the smart grid. The FACTS Scheme is based on a hybrid Power Filter- Capacitive Compensator with dual Switching strategy, and comprises of one dual voltage and one shunt capacitor banks controlled by a modified fast acting dynamic error driven time-descaled/decoupled multi-regulation loop combined with an inter-coupled weighted controller. The effectiveness of the proposed FACTS scheme is validated using MATLAB-Simulink Digital Simulation Environment. The error driven dynamic controller ensures the robustness of the FACTS Filter Compensator for dynamic voltage stabilization with enhanced energy utilization and power quality. The unified AC study system was simulated for normal loading, load excursions and open/short circuit fault conditions.
Conventional distance protection relays used in transmission line protection are based on measure... more Conventional distance protection relays used in transmission line protection are based on measurement of impedance at the relaying point. In the case of series compensated transmission lines, this impedance is not a reliable parameter to estimate the fault distance. Ultra high speed (UHS) protection can be the proper solution for the protection of series compensated transmission lines. UHS relays can help avoid electric brownouts and grid utility system rotating Blackouts like the one that spanned the north-eastern United States and eastern Canada in August 2003. In this paper, the authors have studied the performance of a novel scheme for detection of arcing nonlinear faults caused across the insulator string on an extra high voltage (EHV) transmission tower. A novel wavelet transform based unit protection relaying scheme for series compensated transmission line is presented. The authors have made novel improvements in UHS relaying using wavelet transforms.
A hybrid wind/PV system for supplying an isolated small community with electrical energy is digit... more A hybrid wind/PV system for supplying an isolated small community with electrical energy is digitally simulated and presented in this paper. The proposed hybrid renewable green energy scheme has four key subsystems or components to supply the required electric loads. The first subsystem includes the renewable generation sources from PV array and wind turbine. The second is the interface converters used to connect the renewable energy generators to the common DC collection bus, where all generated energy is collected. The third device represents the added inverter between the common collection DC bus and the added AC bus interface to feed all AC loads. The fourth subsystem comprises all controllers including the modulated power filter. The controller main function is to ensure efficient energy utilization and dynamic matching between loads and green energy generation as well as voltage stabilization. The proposed controllers are coordinated dynamic error driven PI regulators to control the interface converters. The integrated hybrid green energy system with key subsystems are digitally simulated using the Matlab/Simulink/Sim-Power software environment and fully validated for efficient energy utilizations and enhanced interface power quality under different operating conditions and load excursions.
This paper presents a novel pulse width switched modulated power filter compensator (MPFC) for th... more This paper presents a novel pulse width switched modulated power filter compensator (MPFC) for the voltage stability enhancement, energy utilization, loss reduction, and power factor correction in a radial distribution network using the Particle Swarm Optimization (PSO) technique. The MPFC is controlled by a novel dynamic tri-loop error driven controller. The dynamic controller is regulated to minimize the switching current transients, maximize power/energy utilization and to enhance power factor under normal and unbalanced load conditions. Particle Swarm Optimization PSO technique is used to find the optimal control settings that minimizes the distribution feeder current for feeder losses, voltage deviation at key distribution system buses, and Ensure feeder capacity release.
The paper presents the novel application of Particle Swarm optimization PSO for the optimal tunin... more The paper presents the novel application of Particle Swarm optimization PSO for the optimal tuning of a driven error controller for high performance permanent magnet PMDC industrial motor drives. PSO searching algorithm is implemented for tuning the proposed dynamic tri-loop controller gains: the motor speed error (eomega), the armature current deviation (eI) from its maximum or ldquospecifiedrdquo allowable current level and dynamic current ripple error (eR) that define the total error function (et), the integral of the total error and the integral of the total error square. The control voltage signal is used to regulate the firing delay angle alpha of the 3-phase controlled rectifier bridge.
The paper presents the dynamic modeling and coordinated control strategy for an integrated micro ... more The paper presents the dynamic modeling and coordinated control strategy for an integrated micro grid scheme using Photo Voltaic PV, Fuel Cell FC, and backup Diesel generation with additional battery backup system. The integrated scheme is fully stabilized using a novel FACTS based green filter compensators that ensures stabilized DC bus voltage, minimal inrush current conditions, and load excursions while ensuring that the diesel generator set is only utilized when the demand energy exceeds the PV, FC and battery sources capacity within a specified operational levels to ensure highest efficient operation of the integrated renewable energy sources with the diesel engine. The paper presents a novel application of Multi Objective Particle Swarm Optimization MOPSO to control the 6-pulse controlled rectifier converter, dynamic filter/capacitor compensation DFC and the Green Power Filter GPF AC and DC schemes using real time dynamic self regulating error tracking. A tri-loop error driven dynamic controller is used to adjust the PWM switching of the DFC- Dynamic AC side filter compensator and green power filter.
In this paper, a novel discrete optimization approach is developed to optimally solve the optimiz... more In this paper, a novel discrete optimization approach is developed to optimally solve the optimization problem of power system shunt filter design based on discrete multi objective particle swarm optimization MOPSO technique to ensure harmonic current reduction and noise mitigation on electrical utility grid. In this novel optimization approach, multi objective particle swarm optimization MOPSO is implemented to tackle a number of conflicting goals that define the optimality problem. This paper deals with three conflicting objective functions. These conflicting functions are: 1. Minimum harmonic current penetration into the electric grid system, 2. Maximum harmonic current absorption by the harmonic power filter, 3. Minimum harmonic voltage distortion at the point of common coupling, Throughout the optimization process, all power filter parameters are being treated as either continuous or discrete variables. The shunt power filter design and optimization is performed over a specified set of discrete dominant offending harmonics.
IEEE Transactions on Industry Applications, 1996
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 32, NO. 1, JANUARYIFEBRUARY 1996 ... Rohin M. Hi... more IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 32, NO. 1, JANUARYIFEBRUARY 1996 ... Rohin M. Hilloowala, Member, IEEE, and Adel M . Sharaf, Senior Member, IEEE ... Abstruct-The paper presents a rule-based fuzzy logic con-troller to control the output ...
IEEE Transactions on Energy Conversion, 1994
... Parameters of vertical axis wind turbine: Rating: Constants: 1 kW at 450 rpm with V, = 12 m/s... more ... Parameters of vertical axis wind turbine: Rating: Constants: 1 kW at 450 rpm with V, = 12 m/s Height ... Eng.) from Indian Institute of Technology (Bombay), India, in 1982 and Ph.D (Elect ... His research interests are in the areas of Power Electronics, Energy Conversion and the use of ...
Nowadays, Photovoltaic-PV Farms/ Parks and large PV-Smart Grid Interface Schemes are emerging and... more Nowadays, Photovoltaic-PV Farms/ Parks and large PV-Smart Grid Interface Schemes are emerging and commonly utilized in Renewable Energy distributed generation. However, PV-hybrid-Dc-Ac Schemes using interface power electronic converters usually has negative impact on power quality and stabilization of modern electrical network under load excursions and network fault conditions in smart grid. Consequently, robust FACTS based interface schemes are required to ensure efficient energy utilization and stabilization of bus voltages as well as limiting switching/fault onrush current condition. FACTS devices are also used in smart grid-Battery Interface and Storage Schemes with PV-Battery Storage hybrid systems as an elegant alternative to renewable energy utilization with backup battery storage for electric utility energy and demand side management to provide needed energy and power capacity under heavy load conditions. The paper presents a robust interface PV-Li-Ion Battery Storage Interface Scheme for Distribution/Utilization Low Voltage Interface using FACTS stabilization enhancement and dynamic maximum PV power tracking controllers.
Digital simulation and validation of the proposed scheme is done using MATLAB/Simulink software environment for Low Voltage- Distribution/Utilization system feeding a hybrid Linear-Motorized inrush and nonlinear type loads from a DC-AC Interface VSC-6-pulse Inverter Fed from the PV Park/Farm with a back-up Li-Ion Storage Battery.
Renewable energy and green energy utilization of viable resources have emerged as an economic rea... more Renewable energy and green energy utilization of viable resources have emerged as an economic reality for electric utilities as a way to control demand and establish smart grid storage for distribution and utilization grid systems. Smart grid networks using distributed generation-based (DG) power plants (e.g. solar photovoltaic (PV) plants) are emerging with the afferent problems of robust decoupled interface and power quality problems.
The paper presents a novel FACTS-based Interface scheme using VSI-6 Pulse Scheme with an added Switched Filter Compensation (SFC) Scheme for enhancement of power quality and ensuring a flexible decoupled robust DC-AC interface to the smart grid. The FACTS Scheme is based on a hybrid Power Filter- Capacitive Compensator with dual Switching strategy, and comprises of one dual voltage and one shunt capacitor banks controlled by a modified fast acting dynamic error driven time-descaled/decoupled multi-regulation loop combined with an inter-coupled weighted controller. The effectiveness of the proposed FACTS scheme is validated using MATLAB-Simulink Digital Simulation Environment. The error driven dynamic controller ensures the robustness of the FACTS Filter Compensator for dynamic voltage stabilization with enhanced energy utilization and power quality. The unified AC study system was simulated for normal loading, load excursions and open/short circuit fault conditions.
Conventional distance protection relays used in transmission line protection are based on measure... more Conventional distance protection relays used in transmission line protection are based on measurement of impedance at the relaying point. In the case of series compensated transmission lines, this impedance is not a reliable parameter to estimate the fault distance. Ultra high speed (UHS) protection can be the proper solution for the protection of series compensated transmission lines. UHS relays can help avoid electric brownouts and grid utility system rotating Blackouts like the one that spanned the north-eastern United States and eastern Canada in August 2003. In this paper, the authors have studied the performance of a novel scheme for detection of arcing nonlinear faults caused across the insulator string on an extra high voltage (EHV) transmission tower. A novel wavelet transform based unit protection relaying scheme for series compensated transmission line is presented. The authors have made novel improvements in UHS relaying using wavelet transforms.
A hybrid wind/PV system for supplying an isolated small community with electrical energy is digit... more A hybrid wind/PV system for supplying an isolated small community with electrical energy is digitally simulated and presented in this paper. The proposed hybrid renewable green energy scheme has four key subsystems or components to supply the required electric loads. The first subsystem includes the renewable generation sources from PV array and wind turbine. The second is the interface converters used to connect the renewable energy generators to the common DC collection bus, where all generated energy is collected. The third device represents the added inverter between the common collection DC bus and the added AC bus interface to feed all AC loads. The fourth subsystem comprises all controllers including the modulated power filter. The controller main function is to ensure efficient energy utilization and dynamic matching between loads and green energy generation as well as voltage stabilization. The proposed controllers are coordinated dynamic error driven PI regulators to control the interface converters. The integrated hybrid green energy system with key subsystems are digitally simulated using the Matlab/Simulink/Sim-Power software environment and fully validated for efficient energy utilizations and enhanced interface power quality under different operating conditions and load excursions.
This paper presents a novel pulse width switched modulated power filter compensator (MPFC) for th... more This paper presents a novel pulse width switched modulated power filter compensator (MPFC) for the voltage stability enhancement, energy utilization, loss reduction, and power factor correction in a radial distribution network using the Particle Swarm Optimization (PSO) technique. The MPFC is controlled by a novel dynamic tri-loop error driven controller. The dynamic controller is regulated to minimize the switching current transients, maximize power/energy utilization and to enhance power factor under normal and unbalanced load conditions. Particle Swarm Optimization PSO technique is used to find the optimal control settings that minimizes the distribution feeder current for feeder losses, voltage deviation at key distribution system buses, and Ensure feeder capacity release.
The paper presents the novel application of Particle Swarm optimization PSO for the optimal tunin... more The paper presents the novel application of Particle Swarm optimization PSO for the optimal tuning of a driven error controller for high performance permanent magnet PMDC industrial motor drives. PSO searching algorithm is implemented for tuning the proposed dynamic tri-loop controller gains: the motor speed error (eomega), the armature current deviation (eI) from its maximum or ldquospecifiedrdquo allowable current level and dynamic current ripple error (eR) that define the total error function (et), the integral of the total error and the integral of the total error square. The control voltage signal is used to regulate the firing delay angle alpha of the 3-phase controlled rectifier bridge.
The paper presents the dynamic modeling and coordinated control strategy for an integrated micro ... more The paper presents the dynamic modeling and coordinated control strategy for an integrated micro grid scheme using Photo Voltaic PV, Fuel Cell FC, and backup Diesel generation with additional battery backup system. The integrated scheme is fully stabilized using a novel FACTS based green filter compensators that ensures stabilized DC bus voltage, minimal inrush current conditions, and load excursions while ensuring that the diesel generator set is only utilized when the demand energy exceeds the PV, FC and battery sources capacity within a specified operational levels to ensure highest efficient operation of the integrated renewable energy sources with the diesel engine. The paper presents a novel application of Multi Objective Particle Swarm Optimization MOPSO to control the 6-pulse controlled rectifier converter, dynamic filter/capacitor compensation DFC and the Green Power Filter GPF AC and DC schemes using real time dynamic self regulating error tracking. A tri-loop error driven dynamic controller is used to adjust the PWM switching of the DFC- Dynamic AC side filter compensator and green power filter.
In this paper, a novel discrete optimization approach is developed to optimally solve the optimiz... more In this paper, a novel discrete optimization approach is developed to optimally solve the optimization problem of power system shunt filter design based on discrete multi objective particle swarm optimization MOPSO technique to ensure harmonic current reduction and noise mitigation on electrical utility grid. In this novel optimization approach, multi objective particle swarm optimization MOPSO is implemented to tackle a number of conflicting goals that define the optimality problem. This paper deals with three conflicting objective functions. These conflicting functions are: 1. Minimum harmonic current penetration into the electric grid system, 2. Maximum harmonic current absorption by the harmonic power filter, 3. Minimum harmonic voltage distortion at the point of common coupling, Throughout the optimization process, all power filter parameters are being treated as either continuous or discrete variables. The shunt power filter design and optimization is performed over a specified set of discrete dominant offending harmonics.
IEEE Transactions on Industry Applications, 1996
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 32, NO. 1, JANUARYIFEBRUARY 1996 ... Rohin M. Hi... more IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 32, NO. 1, JANUARYIFEBRUARY 1996 ... Rohin M. Hilloowala, Member, IEEE, and Adel M . Sharaf, Senior Member, IEEE ... Abstruct-The paper presents a rule-based fuzzy logic con-troller to control the output ...
IEEE Transactions on Energy Conversion, 1994
... Parameters of vertical axis wind turbine: Rating: Constants: 1 kW at 450 rpm with V, = 12 m/s... more ... Parameters of vertical axis wind turbine: Rating: Constants: 1 kW at 450 rpm with V, = 12 m/s Height ... Eng.) from Indian Institute of Technology (Bombay), India, in 1982 and Ph.D (Elect ... His research interests are in the areas of Power Electronics, Energy Conversion and the use of ...