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Wind speed forecasting is required for ensuring an efficient utilization of the wind power generated by wind turbines. This paper purposes the short-term wind speed forecasting in a 2-dimesional input space using the developed k-nearest neighbor (k-NN) classifier. As well, the effects of the nearest neighbor number and the selected distance metric on the wind speed forecasting were analyzed and many...
Traditional houses consume electrical energy in AC form which is generated by thermal power plants or other energy sources that cause environmental pollution, CO2 emission and global warming. The most important parts of a green house are renewable energy sources like photovoltaic and wind based systems. In this work, our proposed green house generates electrical energy in DC form from photovoltaic...
In this paper, modeling and simulation of a 500 KW prototype wind turbine that is being developed in the context of the MILRES (National Wind Energy Systems) Project in Turkey are presented. This prototype wind turbine has a nominal power of 500 KW at a nominal wind speed of around 11 m/s. Aerodynamic, mechanical, electrical and control models are built in S4WT (Samcef for Wind Turbines) environment...
In this paper Gulf of Mexico wind conditions are analyzed to distinguish suitable regions for wind farm development. A turbine merit rating parameter is introduced to evaluate the combined effects of rotor size, turbine rating and economical boundary conditions. An analytical approach is then taken to match local site conditions with a suitable wind turbine rating and rotor size configuration. Hurricane...
Large wind energy power plants are widely commercialized and integrated in existing electric power grids. The randomness of wind speed over a short period can greatly affect short term generation scheduling. This paper addresses this problem through an optimized day ahead short-term generation scheduling of both thermal and hydrothermal energy systems at different power penetration levels. There are...
In this study, power factor correction rectifier is proposed for wind turbines with three phase permanent magnet synchronous generators to provide maximum energy conversion efficiency. Reference values for the rectifier are controlled by a fuzzy logic based algorithm to track maximum power point of the wind turbine which varies with turbine characteristics, wind speed, temperature, etc. The proposed...
This paper presents a simple control strategy for a variable speed wind energy conversion system with a permanent magnet synchronous generator (PMSG). PMSG is connected to the grid through a switch mode rectifier and a voltage source inverter. The grid should be supplied by certain levels of powers for certain times from wind energy system according to a certain schedule. Batteries bank is connected...
This paper analyzes the mitigation of the unintended fluctuation of wind power generation output with BESSs (Battery Energy Storage System) in the isolated power system in Jeju island. Wind farms are modeled for the simulation that indicates the virtual system in 2014. In the simulation, BESSs are installed in each wind farm to smooth the fluctuation of wind farm output for stabilizing the grid frequency...
This paper proposes the speed sensorless fuzzy MPPT control of grid-connected PMSG for wind power generation. The proposed fuzzy MPPT control is simple since it does not need any knowledge of wind turbine characteristics and speed sensor. Based on small wind power generation, the boost chopper is used to implement the proposed fuzzy MPPT control. There is a specific value of duty cycle which yields...
In this paper a new controller of pitch angle control system for fixed speed wind turbines based wind farm is proposed to smooth output power for damping frequency fluctuation of power system. The control system is designed in such way for the pitch controller to operate based on wind speed and load frequency deviation information. The wind farm is connected to a multi machine power system which is...
In this report In this report, the speed control of a modern pitch-regulated wind turbine has been investigated. The control structure operates without any knowledge of the wind speed or shaft torque, instead these quantities are estimated from the rotor speed and electric power. A novel approach for development of FPGA-based wind turbine control system used in isolated network in MATLAB/Simulink...
Hydrogen production using wind power generation system is very effective for solving the energy supply problem in the future. Many strategies have been proposed for the operation of a grid-connected wind farm. But operation method of stand-alone wind farm has not been studied sufficiently so far. There are many places with good wind condition but without connectable grid, where stand-alone wind farm...
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