Abstract
This study demonstrates variable speed variable pitch horizontal axis wind turbine operating ranges, concerned on increasing the output power generated by the turbine. To achieve these approaches two control techniques summarized. The resultant technique was applied on a model for commercial wind turbine ‘Aeolos 50 kw’ was built on simulink. The simulation results show that the developed strategy is better than the classical strategies.
Highlights
Nowadays there is great consideration to decrease global warming effect by minimize dependence on fossil fuel and increase clean pure green energies portion in global energy system, renewable energies like wind solar and geothermal are alternative types so many nationals rely on renewable energy forms to gain their energy requirements, wind industry it is not new, wind energy had been used for many centuries for propelling boats along rivers as early as 5,000 B.C
2007) and helped pumping water and grinding grain between 500 and 900 B.C., According to Global Wind Energy Council (GWEC) the annual market of wind industry grows by 44%,wind farms produce more than 50 GW in 2014 (Global wind energy council (GWEC Report, 2014) wind energy provide 20.15 MW from India energy demand, 22 MW for Spain, 3.5 MW for brazil
The second category: When wind speed is less than rated wind speed in this case wind turbine produce electric energy which can be maximized by changing the blade pitch angle
Summary
Nowadays there is great consideration to decrease global warming effect by minimize dependence on fossil fuel and increase clean pure green energies portion in global energy system, renewable energies like wind solar and geothermal are alternative types so many nationals rely on renewable energy forms to gain their energy requirements, wind industry it is not new, wind energy had been used for many centuries for propelling boats along rivers as early as 5,000 B.C., Different strategies had been applied in many researches to keep the wind turbine output power constant, equal to rated power For doing this pitch control as classical PI, PID was applied which treat with the turbine as a linear system (Ma, 1997; Hand, 1999). This study aims to introduce a anew control strategy depend on building two cooperative controllers one non linear deal with torque generator and the other linear deal with the blade pitch angles. For doing this purpose a model for real wind turbine Aeolos 50 KW was built by using simulating program Matlab. The purposed strategy applied on Simulink model and the results were analyzed as following
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