PERFORMANCE OF SMALL WIND TURBINES GENERATORS

摘要

This paper describes the methodology to obtain the power curve of Small Wind Turbine Generators (SWTG). A system, including a data logger, was used and a new power transducer was projected with capacity of measuring the instantaneous power of the wind turbine for different wind speed. The wind turbine was tested in laboratory with its respective blades stimulated by the flow of air of an axial fan. The instantaneous power, wind speed, rotation of rotor, and temperature of operation of the SWTG were monitored and measured. The preliminary results show that, with this proposed methodology, it is possible to obtain the curve characteristic of SWTG. In the wind turbine studied, the power curve obtained in laboratory was lower than the power curve supplied by the manufacturer, but closer to the ones found in the bibliographical references about power curve testing. In the continuity of the project, a field work will be accomplished and the same system will be tested, but, this time, in natural wind conditions. In this stage of the work, the standard IEC614000-12 will be used as reference, as well as tests and results found in other references.