Wind energy comes of age California and Denmark

Gipe, P.

doi:10.1016/0301-4215(91)90045-p

Cited by 49 publications

(32 citation statements)

References 1 publication

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“…However, the two opposition discourses of absolute opposition and qualified opposition are present in areas with both proposed and existing projects. This has relevance for a theoretical prediction often cited but rarely tested in wind energy studies (Baxter et al, 2013;van der Horst, 2007;Wolsink, 2007b) that public opinion follows a 'U shape' over time (Gipe, 1995). In other words, attitudes towards wind power are positive when wind energy remains an abstract possibility, become more negative during construction when the impacts of the project are the most uncertain for residents and finally become more positive again after residents have become familiar with the project.…”

Section: Discussionmentioning

confidence: 89%

Qualified, absolute, idealistic, impatient: dimensions of host community responses to wind energy projects

Fast

2015

Environ Plan A

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This study contributes to fuller understandings of the tensions in wind energy planning and politics. Through a q-method analysis of wind energy supporter and opponent discourses in communities hosting both proposed and constructed projects it extends the literature in three main ways. First, this study responds to the need for more nuanced understandings of wind energy supporter perspectives. It identifies and contrasts an impatient supporter with an idealistic supporter discourse. These differ in content, in constituents and in time of use. Second, it identifies an absolute opposition and qualified opposition discourse. Neither of these discourses confirm an expectation from previous studies that landscape and place attachment are the primary determinants for wind energy opposition, rather concerns over health risks, wildlife habitat and a rebuttal of the climate benefits of wind energy are of key concern. Finally, the study contributes to a critical mass of q-method studies of wind energy siting disputes from which tentative general patterns are identified.

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Section: Discussionmentioning

confidence: 89%

Qualified, absolute, idealistic, impatient: dimensions of host community responses to wind energy projects

Fast

2015

Environ Plan A

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“…14 At the end of the 1970s, there have been several research turbines from which most of them have already been in the multi-MW class. 18,19 The research turbines of NASA have been MOD-0, MOD-1, MOD-2, MOD-5B, WTS-3, and WTS-4. 19 Except for MOD-1, all of them had a teetered hub.…”

Section: The Variety Of Teetered Turbine Designsmentioning

confidence: 99%

“…18,19 The research turbines of NASA have been MOD-0, MOD-1, MOD-2, MOD-5B, WTS-3, and WTS-4. 19 Except for MOD-1, all of them had a teetered hub. A commercial teetered turbine, the Westinghouse WWG600, is based 20 on MOD-0.…”

Section: The Variety Of Teetered Turbine Designsmentioning

confidence: 99%

Teeter design for lowest extreme loads during end impacts

2017

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Two bladed wind turbines are discussed as a possible turbine alternative for offshore use as they show a potential to save cost of energy. But compared to three-bladed turbines, their dynamic behavior is much more challenging. A possible solution to handle these larger dynamic loads is the use of a teeter hinge, which can significantly reduce fatigue loads. In contrast to that, extreme loads, coming from teeter end impacts, are often described as a problem for teetered turbines.There are different design parameters of the teeter system of a turbine, which have an influence on extreme loads during teeter end impacts. Despite numerous studies on teeter movement and load reduction potentials of operational loads, scientific literature does not give information about suitable load-reducing combinations of teeter design parameters and their influence on extreme loads. This paper, which is a summary of a PhD thesis, 1 analyses which combination of teeter parameters has the largest load-reducing influence on extreme loads. Aeroelastic load simulations of the teetered turbine CART2 from the NREL test site and one of today's commercial two-bladed turbines, the SCD3MW from aerodyn (both pitch controlled upwind turbines), will be used. KEYWORDSCART2, extreme loads, SCD3MW, teeter, two bladed INTRODUCTIONIn today's literature, teeter end impacts are often described as situations that lead to critical loads. 2-8 Some of these studies even come to the conclusion that teeter end impacts make the load-reducing advantage of the teeter hinge obsolete. However, an overview of turbine design parameters influencing these loads is not given. A summary of research on teeter behaviour and a first approach of influences on teeter extreme loads has been done in Schorbach et al. 9 Closing this research gap is the aim of this study.

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“…风电是目前最具规模化发展前景的可再生能源, 世界各国发展风能开发技术呈现争先恐后之势. 1973 年石油危机后, 美国开始研发风能资源, 这是风能发展史上的重要里程碑 [3] . 与此同时, 欧洲的风能业稳步发展, 经过 1990 年后的 20 年, 欧洲已俨然成为全球风能业的引领者 [4] .…”

Section: 事实上发展可再生的环境友好型能源是解决unclassified

Essential mechanics issues of offshore wind power systems

Zhou¹,

Yang²

2013

Sci. Sin.-Phys. Mech. Astron.

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Wind energy comes of age California and Denmark

Cited by 49 publications

References 1 publication

Qualified, absolute, idealistic, impatient: dimensions of host community responses to wind energy projects

Qualified, absolute, idealistic, impatient: dimensions of host community responses to wind energy projects

Teeter design for lowest extreme loads during end impacts

Essential mechanics issues of offshore wind power systems

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