Wind turbine

Open Access Article

1 - Adaptive Control of Pitch Angle of Wind Turbine Using Human Brain Mechanisms of Emotional Learning
M. Hayatdavudi mohsen Farshad H. R. Najafi R. Sedaghati M. Joorabian

The purpose of this paper is optimal location of distributed generation in electric distribution networks. Load uncertainty and desired voltage range has been modeled using fuzzy data theory. The objective function includes loss reduction, improvement of profile index a More

The purpose of this paper is optimal location of distributed generation in electric distribution networks. Load uncertainty and desired voltage range has been modeled using fuzzy data theory. The objective function includes loss reduction, improvement of profile index and voltage stability index with their relevant constraints, voltage constraints and transmittable power from the line. Load variation has been shown for three different time durations (peak, off peak and average).PSO technique has been used to optimize the objective function while Max-Min method has been applied to select the answer. Results produced from the proposed model have been provided in 5 different scenarios on a 33 bus system of IEEE. Manuscript profile

Open Access Article

2 - Unity Power Factor MPPT for PMSG Wind Turbines Equipped with Matrix Converter
A. Nateghi H. Kazemi Karegar

In this paper, a new control method is proposed for extracting the maximum power of wind turbines equipped with Permanent Magnet Synchronous Generator (PMSG), which is connected to the grid via a matrix converter. The method calculates the optimal rotation speed of wind More

In this paper, a new control method is proposed for extracting the maximum power of wind turbines equipped with Permanent Magnet Synchronous Generator (PMSG), which is connected to the grid via a matrix converter. The method calculates the optimal rotation speed of wind turbine and finds the optimal operation point by hill climbing method. The proposed method is simple and it does not need to use some complex methods such as field oriented and rotor position estimation. Wind turbine speed, electrical torque and consequently maximum output power of wind turbine are obtained by the perfect control of output phases and amplitudes of matrix converter. Moreover, the maximum power is injected to the grid under unity power factor. The proposed method is simulated in MATLAB programming software and the obtained results approve the validity of the method. Manuscript profile

Open Access Article

3 - Wind Farm Layout Optimization with Emphasis on the Wake Effect
A. Farajipoor F. Faghihi R. Sharifi

Construction of wind farms rise for wind energy capture as a renewable energy around the world. The purpose of wind farm layout optimization, absorb maximum energy from wind farms. In this paper, a new hybrid algorithm is presented to maximize the expected energy output More

Construction of wind farms rise for wind energy capture as a renewable energy around the world. The purpose of wind farm layout optimization, absorb maximum energy from wind farms. In this paper, a new hybrid algorithm is presented to maximize the expected energy output. Considerations of algorithm wake loss, which is based on wind turbine location and wind direction. The proposed model is illustrated with a scenario of the wind speed and its direction distribution of windy sites and is compared with ant colony algorithm and evolutionary strategy algorithm in six steps layout. The results show that the combination of ant colony algorithm and genetic algorithm performs better than existing strategies based on maximum values of the expected energy output and wake loss. Manuscript profile

Open Access Article

4 - Detection of Wind Aerodynamic Turbulence and Gear Tooth Breaks in Wind Turbine Gearboxes Using Wavelet Function
A. Ghabel A. Akbari Forod

In order to improve power quality, the detection and identification of factors involved in reducing power quality are paramount. One of the main factors in creating flicker and harmonics in the system connected to the wind turbines are wind aerodynamic turbulences and w More

In order to improve power quality, the detection and identification of factors involved in reducing power quality are paramount. One of the main factors in creating flicker and harmonics in the system connected to the wind turbines are wind aerodynamic turbulences and wind turbines mechanical errors. In this paper the mathematical equations of turbulence wind shadow and wind shear and mechanical equations of Gear Tooth Breaks in Wind Turbine Gearboxes have been evaluated accurately using the MATLAB simulation. The continued impact of the disturbances on the output parameters of the network is observed. Also, it is shown that these disturbances can be identified and classified properly by wavelet function. Manuscript profile

Open Access Article

5 - Detection of Wind Aerodynamic Turbulence and Gear Tooth Breaks in Wind Turbine Gearboxes Using Wavelet Function
A. Ghabel A. Akbari Forod

In order to improve power quality, the detection and identification of factors involved in reducing power quality are paramount. One of the main factors in creating flicker and harmonics in the system connected to the wind turbines are wind aerodynamic turbulences and w More

In order to improve power quality, the detection and identification of factors involved in reducing power quality are paramount. One of the main factors in creating flicker and harmonics in the system connected to the wind turbines are wind aerodynamic turbulences and wind turbines mechanical errors. In this paper the mathematical equations of turbulence wind shadow and wind shear and mechanical equations of Gear Tooth Breaks in Wind Turbine Gearboxes have been evaluated accurately using the MATLAB simulation. The continued impact of the disturbances on the output parameters of the network is observed. Also, it is shown that these disturbances can be identified and classified properly by wavelet function. Manuscript profile

Open Access Article

6 - Robust Scheduling of a Smart Microgrid Connected to the Grid Considering Air Pollution in the Presence of Controllable Loads
amin namvar NAVID TAGHIZADEGAN KALANTARI

The microgrid is a set of local energy producers and consumers that can be utilized with low cost and high reliability. In this paper, a robust multi-objective model is proposed to reduce operating costs and carbon emissions in which a smart grid utilizes a wind turbine More

The microgrid is a set of local energy producers and consumers that can be utilized with low cost and high reliability. In this paper, a robust multi-objective model is proposed to reduce operating costs and carbon emissions in which a smart grid utilizes a wind turbine and micro-turbine to feed its connected loads. The microgrid also uses a battery to store electrical energy in off-peak hours and to deliver energy in on-peak hours. On the other hand, it is connected to the main grid and can exchange energy with it. Consumers connected to this microgrid are divided into two groups. The first group is uncontrollable loads with certain load pattern and the second group is controllable loads that have certain energy consumption but can be controlled by the operating time. The proposed model is a mixed-integer linear programming problem and is simulated with the CPLEX solver in GAMS software. The results show that when the price of electricity is low, the loads are often supplied by grid electricity, and when the price of electricity is high, they are often fed by micro-turbines, batteries, and wind turbines. Manuscript profile

Open Access Article

7 - Control and Power Management of Combined Wind-Microturbine Generation System in Stand-Alone Applications
Ahmad Reza Atapoor محسن رحیمی Allahyar Akhbari

This paper deals with the performance investigation and control of a combined wind-microturbine generation system at off-grid and stand-alone applications. As the novelty, in this paper, the wind turbine does not always work at the MPPT mode, and depending on the availa More

This paper deals with the performance investigation and control of a combined wind-microturbine generation system at off-grid and stand-alone applications. As the novelty, in this paper, the wind turbine does not always work at the MPPT mode, and depending on the available wind power and load demand, two operation modes for the wind turbine are defined: power control mode (MPPT mode) and voltage control mode. At the conditions that the available wind power is less than the load demand, the wind turbine operates at the MPPT mode and microtubule provides the rest of the load power. Once the available wind power goes beyond the load demand, the microturbine can not absorb the additional power, and wind turbine works at load following mode. In this mode, the wind turbine power is less than the available wind power and is identical to the load demand, and the microturbine power is negligible. At the end, by performing simulations at the Matlab-Simulink environment, performance of the study system at different operating conditions is investigated. Manuscript profile

Open Access Article

8 - Optimal Design of Six-Phase Radial Flux Permanent Magnet Synchronous Generator for Small Scale Wind Turbine Applications
M. E. Moazzen S. A. Gholamian

This paper presents optimal design of a six-phase permanent magnet synchronous generator (PMSG) for use in direct drive wind turbines. High Dimensions and manufacturing cost and low efficiency are the disadvantages of generators connected to wind turbines without gearbo More

This paper presents optimal design of a six-phase permanent magnet synchronous generator (PMSG) for use in direct drive wind turbines. High Dimensions and manufacturing cost and low efficiency are the disadvantages of generators connected to wind turbines without gearbox because of their low nominal speed. Therefore, the main purpose of this paper is to optimize the design of the PMSG based on the reduction of losses and the construction cost of the generator. For this purpose, the relations governing the design of the radial flux PMSG have been introduced and then a design algorithm has been extracted. Subsequently, by defining a multi-objective optimization problem and using the particle swarm optimization (PSO) algorithm, the optimum design variables are determined in a suitable range and the minimum losses and construction cost of the generator are obtained. The optimal design has been verified by using finite element analysis. Manuscript profile

Open Access Article

9 - New Structure of Wind-PV Farm with Improved Performance under Voltage and Frequency Fault Conditions
Mehrdad Tarafdar Hagh Farshid Najaty Mazgar

In this paper a new structure for wind – PV farm is proposed. The PV arrays and DC loads are capable to connect to the proposed structure. In the proposed structure each DFIG wind turbine is connected to the AC grid through its stator windings and has a connection to a More

In this paper a new structure for wind – PV farm is proposed. The PV arrays and DC loads are capable to connect to the proposed structure. In the proposed structure each DFIG wind turbine is connected to the AC grid through its stator windings and has a connection to a common DC link via its rotor side converters. The proposed structure uses a high power grid side converter and an energy storage system for entire wind – PV farm. The converter power loss decrease and lifetime increase of power switches are some advantages of the proposed structure under normal operation conditions. The proposed structure with the coordinated power control of DFIG wind turbines, the ESS and PV arrays improves the low voltage ride-through capability under-voltage fault conditions and enhances the frequency response of the wind farm under frequency faults. The proposed structure is simulated in MATLAB/ Simulink software and the results are presented. Furthermore, an experimental setup is provided to test the operation of the proposed structure. Manuscript profile

Open Access Article

10 - A New Method for Performance Evaluation of Wind Turbines and Wind Farms Using Extended Capacity Factor – Case Study of Manjil Wind Farm
Hamed Delkhosh Mostafa Parniani

Nowadays, with the increasing share of wind power in electrical energy sector, performance evaluation indices are of great importance. Such indices can lead to optimal utilization of invested capital and effective development of existing wind farms. Despite having some More

Nowadays, with the increasing share of wind power in electrical energy sector, performance evaluation indices are of great importance. Such indices can lead to optimal utilization of invested capital and effective development of existing wind farms. Despite having some of the required characteristics, the capacity factor based on traditional definition has some limitation. This study aims to extend the concept of capacity factor and presents a comprehensive formulation in order to calculate this index using measured and simulated data for one turbine, all turbines connected to a feeder or a busbar, and all turbines of a wind farm. This formulation also provides a framework for calculating the capacity factor in various time periods (annual, seasonal, monthly, etc.) and different time slots (all hours, special hours, hourly, etc.). As a case study, performance of the installed wind turbines in Manjil wind farm is investigated over an operation period using both measured and simulated data. Performance evaluation of the farm is also carried out with a newer variable speed type. Moreover, capacity factors of the feeders, busbars, and the entire farm are calculated using the turbines simulated data as well as measured data of the feeders over an operation period, and various results of exploring the obtained capacity factors are presented. Numerical results demonstrate the effectiveness of newly presented method for the performance evaluation of wind turbines and wind farms based on extended concept of capacity factor. Manuscript profile

Open Access Article

11 - Fault Tolerant Control of DFIG Wind Turbine Back-to-Back Converter Based on Developed Sliding Mode Method
mehrnoosh Kamarzarrin Mohammad Hossein Refan پرویز امیری

Fault detection and tolerable control of wind turbine increases its reliability and availability. One of the electrical components of the wind turbine with a high error rate is the power converter. In this paper, a new method for fault tolerant (FT) control of the wind More

Fault detection and tolerable control of wind turbine increases its reliability and availability. One of the electrical components of the wind turbine with a high error rate is the power converter. In this paper, a new method for fault tolerant (FT) control of the wind turbine back-to-back converter based on Dual Feed Induction Generator (DFIG) is presented. When a open circuit fault occurs in each of the IGBTs of the wind turbine converter, the performance of the converter is distorted and part of the current signal of each leg of the converter is lost. The classical controller cannot completely correct this change in current behavior, and for this reason, it has an abnormal performance. As a result, power generation will be accompanied by many fluctuations. In order to compensate, a new method based on sliding mode control is presented in this article. First, when an error occurs, the fault detection system identifies the faulty leg, and after reconfiguring the hardware, the proposed control system based on sliding mode control replaces the classic control system and switching operation. The fault detection method presented in this article is based on artificial neural network and it was developed based on matching with the functional parameters of the wind turbine. The proposed FT method is evaluated using a hardware simulator in a laboratory loop with a 90 kW DFIG generator. The experimental results show the proper accuracy of the fault detection method and on the other hand, the proposed FT method was able to compensate the open circuit fault of the IGBT. Manuscript profile

Open Access Article

12 - Investigating and analyzing the effects of the consequences of wind turbines on the environment
Farid Manouchehri Sarbasi Seyed Majid Keshavarz

The reduction of fossil fuel resources, which are considered a huge part of energy production resources, as well as the effects of the consumption of such energy resources, cause environmental pollution issues such as the phenomenon of global warming of the earth's temp More

The reduction of fossil fuel resources, which are considered a huge part of energy production resources, as well as the effects of the consumption of such energy resources, cause environmental pollution issues such as the phenomenon of global warming of the earth's temperature, the reduction of the thickness of the ozone layer, and the destruction of natural resources such as forests, pastures and The seas have been In this regard, the use of renewable energy such as wind energy is booming; By examining the weather conditions of each region, the ability to extract wind energy from that environment can be extracted. The increasing growth of the wind turbine industry in the world has made this industry one of the leading industries in the field of new energy, and it is expected that this growth will increase significantly in the coming years. Although wind power plants have less destructive effects on the environment compared to traditional power plants, the environmental impact of wind turbine blades will become a big challenge. Disposal and recycling of vanes, noise created by vanes, visual effects, killing of birds and insects by vanes, atmospheric disturbances and pollution during construction, transportation and installation of vanes are among these problems. Many of these problems have been reduced with the advancement of technology or with the correct installation of the power plant. The purpose of this research is to investigate and evaluate the effects of wind turbines on humans and the environment. Manuscript profile

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