Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines

原,豊; Hara,Yutaka; ハラ,ユタカ; Higami,Hiroyuki; Ishikawa,Hiromitsu; Ono,Takeshi; Saito,Shigenori; Ichinari,Kenichiro; Yamamoto,Katsushi

doi:https://doi.org/10.3390/en17112727

WEKO3

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Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines

https://repository.lib.tottori-u.ac.jp/records/2001654

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ene17(11)_2727.pdf (15.1 MB)

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デフォルトアイテムタイプ（フル）(1)

公開日

2025-01-22

タイトル

Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines

言語

作成者

原,豊

WEKO 587
研究者総覧鳥取大学 100001652
e-Rad_Researcher 30781687

ja	原,豊 kakenhi 鳥取大学 15101
en	Hara,Yutaka Tottori University
ja-Kana	ハラ,ユタカ

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Higami,Hiroyuki

en	Higami,Hiroyuki Tottori University
ja	kakenhi 鳥取大学 15101

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Ishikawa,Hiromitsu
Ono,Takeshi
Saito,Shigenori
Ichinari,Kenichiro
Yamamoto,Katsushi

主題

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主題Scheme

Other

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butterfly wind turbine

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vertical axis

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overspeed control

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movable arm

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aileron

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damper

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wind power

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centrifugal force

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blade element momentum theory

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言語

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Other

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streamtube model

内容記述

内容記述タイプ

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内容記述

To reduce the cost of small wind turbines, a prototype of a butterfly wind turbine (6.92 m in diameter), a small vertical-axis type, was developed with many parts made of extruded aluminum suitable for mass production. An overspeed control system with movable arms that operated using centrifugal and aerodynamic forces was installed for further cost reduction. Introducing this mechanism eliminates the need for large active brakes and expands the operating wind speed range of the wind turbine. However, although the mechanism involving the use of only bearings is simple, the violent movement of the movable arms can be a challenge. To address this in the present study, dampers were introduced on the movable arm rotation axes to improve the movement of the movable arms. To predict the behavior of a movable arm and the performance of the wind turbine with the mechanism, a simulation method was developed based on the blade element momentum theory and the equation of motion of the movable arm system. A comparison of experiments and predictions with and without dampers demonstrated qualitative agreement. In the case with dampers, measurements confirmed the predicted increase in the rotor rotational speed when the shorter ailerons installed perpendicularly to the movable arms were used to achieve the inclination. Field experiments of the generated power at a wind speed of 6 m/s (10 min average) showed relative performance improvements of 11.4% by installing dampers, 91.3% by shortening the aileron length, and 57.6% by changing the control target data. The movable arm system with dampers is expected to be a useful device for vertical-axis wind turbines that are difficult to control.

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出版者

MDPI AG

言語

日付

2024-06-03

日付タイプ

Issued

言語

eng

資源タイプ

資源タイプ識別子

http://purl.org/coar/resource_type/c_6501

資源タイプ

journal article

出版タイプ

VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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2025-01-17 07:48:12.135484

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Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines

× 原,豊

× Higami,Hiroyuki

× Ishikawa,Hiromitsu

× Ono,Takeshi

× Saito,Shigenori

× Ichinari,Kenichiro

× Yamamoto,Katsushi

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