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The energy debate is at the heart of any political or economic strategy, also the real risk of depletion of non-renewable energy sources in the long term make us look more and more renewable energy sources. This brings us inevitably to the question of scientific research and technological innovation, which today enables to find solutions to the socio-economic and socio-cultural context. Rural electrification...
Maximum power points tracking (MPPT) techniques are widely utilized in photovoltaic (PV) systems to operate at the peak power of PV array which depends on solar and ambient temperature. Between all the MPPT strategies, the incremental conductance (INC) algorithm is extensively employed due to the high tracking accuracy at steady state and good adaptability to the rapidly changing atmospheric conditions...
In this paper, we present a new approach for demand side management in Smart Grid. The Multi Agent Systems (MAS) Technology is actually the most suitable to face its emerging challenges, such as complex management and control, self-healing with necessity of collaboration and communication to solve a local or global problem, and many other problematic aspects. Nowadays, there is no complete environment...
Maximum power point tracking (MPPT) techniques are widely applied in photovoltaic system to produce the maximum power of the PV generator. In this paper, we presented a modified variable step size P&O MPPT algorithm. The proposed method can greatly improve the response time and precision MPPT steady state simultaneously. The proposed approach has been tested in MATLAB / Simulink environment, and...
In this paper, a control for variable speed Wind Energy Conversion System (WECS) that incorporates a Permanent Magnet Synchronous Generator (PMSG) is described. The proposed approach is based on a Vector Control theory (VC) for regulate of both grid-side and machine converters of a PMSG wind turbine. Then, an optimal control strategy is developed for integrated control of PMSG power extraction. It...
This paper presents algorithms and architecture models for a home energy management system. It's based on customers' behavior that is modeled by a decision-making chain, and smart appliances' use for demand side management. The proposed architecture is scalable and extensible to upper levels of smart grid as the development approach used is bottom-up. Once the model is validated for home use, we can...
This paper investigates the novel Variable Structure Direct Torque Control (VS-DTC) scheme for Wind Energy Conversion System (WECS) based on the Permanent Magnet Synchronous Generator (PMSG) to maximize the generated power from wind turbine. The system includes a wind turbine, a PMSG, two converters and an intermediate DC link capacitor. The efficiency of the WECS can be greatly improved using an...
This study proposes a novel Variable Structure Direct Torque Control (VS-DTC) scheme for Wind Farm (WF) based on the Permanent Magnet Synchronous Generators (PMSGs) in order to maximize the generated power from wind turbines. The 30KW wind farm consists of 3 PMSGs based 10KW generators connected to a common DC-bus. Each generator of the farm is connected to the DC-bus through a rectifier, but the...
The efficiency of the Wind Farm (WF) systems can be greatly improved using an appropriate control methodology. In this paper, a control for variable speed WF that incorporates a Permanent Magnet Synchronous Generator (PMSG) is described and the so called Vector Control (VC) theory is applied. 6 PMSGs based 2MW generators connected to a common DC bus are used. Each generator is connected to the DC-bus...
A wind farm with variable speed wind turbines usually consists of a large number of Wind Turbine Generators (WTGs) connected and operating simultaneously. The study of a wind farm with Permanent Magnet Synchronous Generators (PMSG) is presented. The 30 KW wind farm consists of 3 PMSGs based 10KW generators connected to a common DC-bus. Each PMSG of the wind farm is connected to the DC-bus through...
This paper presents a nonlinear control of dc-bus voltage, active and reactive powers for wind power grid connected Voltage Source Inverter (VSI). The controller exploits the backstepping scheme to calculate the required inverter's control to eliminate the instantaneous errors of dc-link voltage, active and reactive powers. The nonlinear control can increase the system effectiveness and realize voltage...
In this paper, nonlinear control of permanent magnet synchronous generators (PMSG) for wind energy conversion system (WECS) is investigated in order to maximize the generated power from wind turbine. The control strategy combines the technique of maximum power point tracking (MPPT) method and sliding mode (SM) nonlinear control. A speed and pitch control scheme for variable speed wind turbines are...
Wind farms WF connected to the power network are frequently subjected to grid faults, a large rotor current rising proportion happens during grid voltage sags. These faults may cause damages to rotor windings, converters, DC Link capacitor or induce drive train mechanical stress due to torque fluctuations. This paper develops a crowbar and chopper protection strategy to care for doubly fed induction...
This paper presents a nonlinear control of 900-kW wind power, to track the maximum power point (MPPT,) and control Power Factor Correction (PFC) of wind farm using three Squirrel Cage Induction Generator (SCIG) driven by 300-kW wind turbines. The wind turbine delivers an active and reactive power to grid via common DC-bus and Voltage Source Converter (VSC), the proposed control strategy provides perfect...
A wind farm with variable speed wind turbines usually consists of a large number of wind turbine generators (WTGs) connected and operating simultaneously. The study of a wind farm with permanent magnet synchronous generators (PMSG) is presented. The 10 MW wind farm consists of 5 PMSGs based 2MW generators connected to a common DC-bus. Each PMSG of the wind farm is connected to the DC-bus through a...
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