翻訳と辞書 Words near each other ・ Yavvanam Katesindi ・ Yavyavati ・ Yavé Cahard ・ Yaw ・ Yaw (name) ・ Yaw (rotation) ・ Yaw Amankwah Mireku ・ Yaw Antwi ・ Yaw Asante ・ Yaw bearing ・ Yaw Berko ・ Yaw damper ・ Yaw damper (railroad) ・ Yaw Danso ・ Yaw dialect ・ Yaw drive ・ Yaw Fosu-Amoah ・ Yaw Frimpong ・ Yaw Ihle Amankwah ・ Yaw Kiti Glymin ・ Yaw Mingyi Monastery ・ Yaw Ofori Debrah ・ Yaw Osafo-Marfo ・ Yaw Osei-Owusu ・ Yaw people ・ Yaw Preko ・ Yaw River ・ Yaw Shin Leong ・ Yaw string ・ Yaw system Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Yaw drive ： ウィキペディア英語版 Yaw drive The yaw drive is an important component of the horizontal axis wind turbines' yaw system. To ensure the wind turbine is producing the maximal amount of electric energy at all times, the yaw drive is used to keep the rotor facing into the wind as the wind direction changes. This only applies for wind turbines with a horizontal axis rotor. The wind turbine is said to have a yaw error if the rotor is not aligned to the wind. A yaw error implies that a lower share of the energy in the wind will be running through the rotor area. (The generated energy will be proportional the cosine of the yaw error). == History == When the windmills of the 18th century included the feature of rotor orientation via the rotation of the nacelle, an actuation mechanism able to provide that turning moment was necessary. Initially the windmills used ropes or chains extending from the nacelle to the ground in order to allow the rotation of the nacelle by means of human or animal power. Another historical innovation was the fantail. This device was actually an auxiliary rotor equipped with plurality of blades and located downwind of the main rotor, behind the nacelle in a 90° (approximately) orientation to the main rotor sweep plane. In the event of change in wind direction the fantail would rotate thus transmitting its mechanical power through a gearbox (and via a gear-rim-to-pinion mesh) to the tower of the windmill. The effect of the aforementioned transmission was the rotation of the nacelle towards the direction of the wind, where the fantail would not face the wind thus stop turning (i.e. the nacelle would stop to its new position).〔Wind Power Plants, R. Gasch and J. Twele, Solarpraxis, ISBN 3-934595-23-5〕 The modern yaw drives, even though electronically controlled and equipped with large electric motors and planetary gearboxes have great similarities to the old windmill concept. They still use a means of mechanical energy “production” (i.e. electric motor), a method to increase the torque (i.e. gearbox) and a gear-rim mounted on the fixed portion of the wind turbine and in constant mesh with the output gear of the said gearbox. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yaw drive」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.