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Nowadays, wind energy has become a very viable alternative solution to provide electrical energy. The development of wind energy is especially relevant for the case of isolated island in the south central provinces of Vietnam, where there is great potential for wind energy. For these isolated systems, the co-generation of diesel generators and wind turbines is a common configuration, but also poses...
Renewable Energy Systems are becoming a common choice for small communities in Canada where the cost of diesel fuel is high. In this paper, a PV/Wind hybrid system is being considered for supplying an electrical load of a Mobile office which is proposed and presented along with relevant statistics. An optimal configuration of different renewable energy system is being obtained. The optimal configuration...
Due to growing concerns over climate change, more and more countries are looking to renewable energy sources to generate electricity. Therefore, wind turbines are increasing in popularity. The amount of mechanical power that can be extracted from the wind by a turbine rotor depends on the characteristics of wind turbine. Furthermore, the aim of the characteristics of any wind turbine is to provide...
This paper proposes biogeography based optimization (BBO) algorithm and genetic algorithm (GA) to solve the unit commitment problem incorporating the wind energy (UCIW) uncertainty. Unit commitment (UC) problem is mainly finding the minimum cost schedule to a set of generators by turning each one either on or off over a given time horizon to meet the demand load and satisfy different operational constraints...
Wind energy use has shown a remarkable increase in last years. In order to achieve the highest efficiency with the best characteristics in wind turbines, it is necessary to analyze relevant factors in wind energy conversion. In this review a state of the art is presented focused on modeling, constitutive elements, structure and control of wind generation systems and the increasing use of wind energy...
This paper presents the steady-state performances of a self-excited induction generator under unbalanced conditions. Particular interest was given to an extreme unbalance condition where a three-phase induction generator is supplying a single-phase load. The computation approach used simplifies the mathematical equations governing the operation of the generator. The adopted model for the generator-load...
This paper discusses a robust control of a wind energy conversion chain based on a Permanent Magnet Synchronous Generator. This command is evaluated in the context of controlling the speed of PMSG and to control the active and reactive power injected into the grid, to increase the power generated and thus improve the efficiency of wind power system. A non-linear controller was implanted. The control...
The Power distribution system reliability is the Evaluation of halt probability of customers power supply over a given distribution network on power system. The Distributed Generators are like wind renewable energy systems and Modern Electric Vehicles (MEV) taken into the same Distribution System and evaluate the halt of the power supply to the customers. To make reliable power supply, estimating...
People are very vulnerable in case of natural disasters. Power grid destruction is a common disaster in these situations. Numerous costumers might easily lose access to electric power and this condition can continue for a long time after the catastrophe. Emergency shelter after occurrence of disasters is usually offered by organizations or governmental emergency administration departments, as a comeback...
The use of wind energy as a source of electrical energy is increasing along with the limited fossil energy and increase environmental awareness to the greenhouse effect. This paper presents the modeling and control of permanent magnet synchronous generator (PMSG) for wind turbines. To get optimal power, the generator must be able to rotate at the optimum speed so that it is required speed controller...
During this time, the main source of electrical energy derived from fossil energy sources, which is at present the number continues to decrease and become more limited. Therefore, it is necessary to find alternative sources of energy produced by natural processes so it will not run out or quickly reversed if managed properly. In other words, alternative energy sources must be a renewable energy. Some...
Increasing worldwide energy demand and well known pollution effects of fossil fuels, make necessary to develop new environmentally friendly energy generation systems such as wind energy. In this research a predictive current control with reactive power reduction is proposed for a six-phase energy generator — multi-modular matrix converter system. The proposal shows a significant harmonic reduction...
A model of a hybrid wind wave energy converter (HWWEC) system is proposed in this paper. The HWWEC includes two wave buoys and a vertical axis wind turbine (VAWT) system, which co-works to drive a generator. Wave buoys are arranged in an arc pattern to capture efficiently wave energy from many directions. The hydrodynamic forces are calculated by the Wave Analysis at Massachusetts Institute of Technology...
In this paper, a detailed model of a 2 MW wind turbine system with a permanent magnet synchronous generator (PMSG), including the aerodynamics, the mechanics, and the electrical domain is presented. It is then used to examine the influences of the level of detail in the model of a wind turbine system on the calculated lifetime consumption of the converter's power modules. This is done by comparing...
Modular multilevel topologies are possible candidates for medium-voltage wind turbines because of their scalability and possible redundancy. This paper concentrates on their design and investigates the influence of generator-to-grid voltage ratio, generator nominal frequency, module-capacitance minimising control approaches, third harmonic injection and fault ride-through capability requirement on...
This paper presents a simulation of an onshore energy conversion system connected to the electric grid and under a strategy of a supervisor control based on deterministic version of a finite state machine. The simulation is planned to address an analysis on performance due to the action of the supervisor. The supervisor is included at the higher level, having the objective of analyzing the operational...
This paper presents the design and control structure of a synchronous generator in ring form. The analysed generator is designed in order to test the control structure of a light-weight 10 MW generator for wind turbines. A segmented stator structure with distributed control allows control of the current of single stator segments which facilitates damping of axial displacement due to varying wind speeds...
The wind generation system treated in this paper is composed of a fixed pitch angle wind turbine followed by a Permanent Magnet Synchronous Generator (PMSG) and power electronic converters AC-DC-AC which are coupled to a DC link. This work deals with the control of the inverter in order to ensure a constant DC link voltage. The control design is based on Takagi Sugeno fuzzy model. Stability analysis...
Wind energy has gained a considerable attention from industries and academia to increase the reliability and availability of wind turbines (WTs) and, consequently, to reduce wind energy cost. With this attention has come investments and new technologies from WT manufacturers as industrial solutions. Among these technologies the new arrivals, the variable speed generation systems based on permanent...
This paper presents modelling, simulation and analysis of novel control strategies for variable speed wind turbines driven by a Permanent Magnet Synchronous Generators (PMSG) connected to the grid. The machine side controller is designed to match Maximum Power Point Tracking (MPPT) to obtain high extraction of wind power while connected to a the grid, and the grid side controller fixes the DC voltage...
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