Moment of Inertia Dependence of Vertical Axis Wind Turbines in Pulsating Winds
Joint Authors
Hara, Yutaka
Hara, Koichi
Hayashi, Tsutomu
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-04-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Vertical Axis Wind Turbines (VAWTs) are unaffected by changes in wind direction, and they have a simple structure and the potential for high efficiency due to their lift driving force.
However, VAWTs are affected by changes in wind speed, owing to effects originating from the moment of inertia.
In this study, changes in the rotational speed of a small VAWT in pulsating wind, generated by an unsteady wind tunnel, are investigated by varying the wind cycle and amplitude parameters.
It is shown that the responses observed experimentally agree with simulations based on torque characteristics obtained under steady rotational conditions.
Additionally, a simple equation expressing the relationship between the rotational change width and amplitude of the pulsating wind is presented.
The energy efficiency in a pulsating wind remains constant with changes in both the moment of inertia and the wind cycle; however, the energy efficiency decreases when the wind amplitude is large.
American Psychological Association (APA)
Hara, Yutaka& Hara, Koichi& Hayashi, Tsutomu. 2012. Moment of Inertia Dependence of Vertical Axis Wind Turbines in Pulsating Winds. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-507447
Modern Language Association (MLA)
Hara, Yutaka…[et al.]. Moment of Inertia Dependence of Vertical Axis Wind Turbines in Pulsating Winds. International Journal of Rotating Machinery No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-507447
American Medical Association (AMA)
Hara, Yutaka& Hara, Koichi& Hayashi, Tsutomu. Moment of Inertia Dependence of Vertical Axis Wind Turbines in Pulsating Winds. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-507447
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507447