Исследования ветроустановок небольшой мощности = Investigation of the small-scale windmills

Abstract

The small-scale windmills which could be used indepedently of the electric grid to meet partly the requirements of the individual farmers has been investigated. The optimum tip speed ratio of the wind turbine which allows the best use to the wind energy has been established. The character sketch of windmill's power has been presented and the energy amounts which are produced in middl-Lithuanian ans coast regions when the wind turbines were spinning at the constant and the variable velocity has been calculated. By analytical research there has been established that the most effective mode of the operation is to vary the speed of the wind turbine, aspecially when turbine's mechanical energy in the hydrodynamical mechanism is directly transformed into the heat.