Abstract
This work presents a vertical wind turbine with wind collector designed using low-cost materials and specific sensors for the acquisition of physical quantities relevant to obtain measures of efficiencies under different conditions of use. We describe the selection of materials; construction, assembly and mechanical tests and, mainly, sensors with applications of electrical and electronic elements; as well as some tests made to obtain the instantaneous and average efficiencies. We decided to perform experimental measurements by means of digital temperature sensors, speed of rotation, voltimeters and amperimeters, which were placed at strategic points of the wind power device. Simultaneously, using an anemometer, sought to make wind speed measurements in some experimental tests. So, it was necessary to build and refine traditional microcontroller boards whose functions were to identify and read all measurements, in addition to performing the interface between the sensors employed with the microcomputer used. The experimental parameters were identified with programs using the ScadaBR and Excel, specifically developed as necessary.
Highlights
Even though the importance of wind energy generation is not defined yet, it will probably be within the near future, especially considering that there is plenty of space opened by the need to reduce burning of fossil fuels for electricity generation (Bao, Jinag, & Chen, 1996)
The variation of the wind speed was accomplished by a frequency inverter, connected to the motor of fan
Many researches, involving wind turbines, evaluate the impact of energy generation related to reliability of the transmission system
Summary
Even though the importance of wind energy generation is not defined yet, it will probably be within the near future, especially considering that there is plenty of space opened by the need to reduce burning of fossil fuels for electricity generation (Bao, Jinag, & Chen, 1996) Besides this factor, there are others, such as justified or not rejection to the use of nuclear systems for electric energy, the high cost of solar photovoltaic systems and the great difficulty in building hydroelectric power stations, witch an increasing loss of land because of the reservoir created, as well as environmental impacts (Eaesl, 2016). Some researchers, interested in studying the wind collectors, have focused to the development of more efficient profiles to use in wind turbines (Altan & Atilgan, 2008; Albuquerque & Pinto, 2016) These studies have made it possible to obtain a speed restriction, due to the phenomenon called ‘stall’, and the reduce of noise caused by the high speed of tips of the. Another motivation of these studies has been the use of electric alternators, for being extremely useful in terms of operations where the sites topology is suitable to the conditions of wind speeds, allowing the construction of lighter and more powerful machines (Tang, He, Wen, & Liu, 2015)
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