KAJI KARAKTERISTIK MEKANISME FURLING CONTROL MODEL TURBIN ANGIN DENGAN SUDUT EKOR 0o

Suandi, Agus and Nurul, Iman Supardi and Angky, Puspawan (2019) KAJI KARAKTERISTIK MEKANISME FURLING CONTROL MODEL TURBIN ANGIN DENGAN SUDUT EKOR 0o. Rekayasa Mekanik, 3 (2). pp. 1-4. ISSN 2597-4254

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Text (Rekayasa Mekanik Vol. 3, No. 2, Oktober 2019) 14. Rekayasa Mekanik Vol. 3, No. 2, Oktober 2019.pdf - Published Version Available under License Creative Commons GNU GPL (Software). Download (1MB) | Preview

Abstract

Furling is a simple windmill protection control system, utilizing the earth's gravity and wind lift (passive control). With furling technology, the protection system will be more likely to be applied to micro-scale windmills. The function of furling control is to maintain a position when the wind speed is normal to get optimal energy and turn the nacelle from the wind direction (called yawing) when the wind speed is too high as a protection system. The design criteria are at the wind speed limit where the system starts working to save, that is, with the moment of the wind force forming a yawing angle. In this design, the wind speed limit at which furling starts to work is V = 8 m/s. In addition to V which is the limit to start the rescue, V is also the limit to return to normal position, meaning that when the windmill is in the turned position (V> 8 m/s) then the wind speed decreases to V <8 m/s, then the system works automatically to return the wheel to its normal position. To determine the tail tip mass m, length (ℓboom), and tail cross-sectional area (A). Preliminary data calculations are given based on the assumption of environmental conditions (ρ) air from the fluid table and problem constraints. This furling system works by keeping the tail position fixed at an angle of 0o and the nacelle rotates away from the wind direction. The movement forms a yawing angle, which is the angle between the axis of the rotor and the direction of the wind. The wind speed is measured using an anemometer, the rotational speed of the blades is measured using a tachometer and the angle formed is obtained through visual observation of the recording and image processing results. The test results show that the furling and yawing mechanism starts working at wind speeds of 7-8 m/s and the rotor rotation is 495 rpm with a yawing angle of 10o . As the wind speed increases, the yawing angle formed is greater and the rotor rotation is not optimal. At a wind speed of 17 m/s yawing angle of 47o , the rotation of the rotor does not exceed 750 rpm which if it does not occur yawing, the rotor rotation at 17 m/s reaches 1084 rpm.

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