%0 Journal Article %T Design and Efficiency of 5 kW Wind Turbine Without Gearbox, Controlled by Yaw and Pitch Drivers %A Muzaffer Y¨ıcel %J - %D 2018 %X This study is on the installation and operation of a 5-kW power wind turbine and measurement of the energy output efficiency. To keep the power plant rotating at fixed revolutions and to ensure control in high wind speeds, an automated system allowing the blade angles to change depending on the wind was installed. The yaw motor movement toward the wind direction was provided by automatic system receiving data on wind direction measurements. There was no gear box system used to increase the efficiency of the system. A self-excited generator providing 5 kW energy at 200 rpm was designed. Additionally, the energy from the turbine was transferred to the national grid. For this, the electricity produced had frequency and tension values set to the 220 V and 50 Hz found on the national grid with a regulated circuit and was then transferred to the grid. The generator (alternator), blades, tower and main chassis system of the wind turbine were designed. Trials of the turbine were completed in locations where the wind was appropriate. At the end of these trials, it was observed that the turbine had 28% average efficiency. The efficiency of this type of turbine with professional design is about 30-35%. Considering the wind is not regular in the region, it should be considered as an ideal turbine because of this efficiency. The aim of the study was to design a turbine with automation system and to operate the turbine in natural environments to determine its efficiency. The alternator used in the turbine was designed and constructed in accordance with the power of the designed blades. The blades were made using fiber construction material without leaving air bubbles by vacuum technique. One of the components of the wind turbine that increases vibration is the tail system allowing the turbine blades to turn towards the wind. No tail system was used in this study. Instead, a yaw motor was used ensuring the tower was perpendicular to the wind. The yaw motor oriented the blades against the wind based on directional information from the wind direction sensor %K Alternatif enerji %K R¨ızgar T¨ırbini %K r¨ızgar t¨ırbin otomasyonu %K r¨ızgar t¨ırbin verimlili£żi %K yaw kontrol¨ı %K pitch kontrol %U http://dergipark.org.tr/comufbed/issue/37015/393959