Dynamic Study of a Rooftop Vertical Axis Wind Turbine Tower Based on an Automated Vibration Data Processing Algorithm

Wang, Ying; Liu, Wensheng; Dai, Kaoshan; Yuan, Miaomiao; Chen, Shen-En

doi:10.3390/en11113135

Cited by 9 publications

(7 citation statements)

References 32 publications

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“…Similar results are achieved in [14]. In [15], a test case rooftop VAWT similar to the one in the present work is considered: a health monitoring system is implemented and the dynamic behavior of the VAWT is studied using vibration measurements under ambient conditions. To process the vibration data, an automated algorithm based on stochastic subspace identification (SSI) and a fast clustering approach is developed and presented to show how modes could be determined: one of the main result of the study is that the modal behaviors can be differentiated into building-associated and non-building-associated modes.…”

Section: Introductionsupporting

confidence: 65%

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

et al. 2019

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In the recent years, distributed energy production has been one of the main research topics about renewable energies. The decentralization of electric production from wind resources raises the issues of reducing the size of generators, from the MW scale of industrial wind farm turbines to the kW scale, and possibly employing them in urban areas, where the wind flow is complex and extremely turbulent because of the presence of buildings and obstacles. On these grounds, the use of small-scale vertical axis small wind turbines (VASWT) is a valid choice for on-site generation (OSG), considering their low sensitivity with respect to turbulent flow and that there is no need to align the turbine with wind direction, as occurs with horizontal axis small wind turbines (HASWT). In addition, VASWTs have a minor acoustic impact with respect to HASWTs. The aim of this paper is to study the interactions that take place between a 1.2 kW, vertical axis, Darrieus VASWT turbine and a small, experimental building, in order to analyze the noise and the vibrations transmitted to the structure. One method to damp the vibrations is then assessed through spectral analysis of data acquired through accelerometers located both in the mast of the wind turbine and at the building walls. The results confirm the usefulness of dampers to increase the building comfort regarding vibrations.

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Section: Introductionsupporting

confidence: 65%

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

et al. 2019

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“…Another study was performed on the rooftop of 24 story building [33]. The result showed that building vibration contributed to the vibration of the VAWT tower, not the other way around.…”

Section: Energy Potential Production For Multiple Turbinesmentioning

confidence: 99%

Wind Energy Potential on A Highrise Building: A Preliminary Study

Firdaus

Prasetyo

Ab-Samat

et al. 2021

ARFMTS

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Indonesia has an abundant renewable energy source. One of them is wind energy resources. Unfortunately, Indonesia's wind energy resource is not fully utilized, especially for application in high-rise buildings. The paper investigates the potential of energy production from the horizontal-axis wind turbine (HAWT) and the vertical-axis wind turbine (VAWT) on the rooftop of a university building in Indonesia. The wind speed data were measured on the rooftop of the building for seven months. The data was analyzed using Weibull distribution. Based on the probability density function of the Weibull distribution, the potential energy production was calculated using the power curves from the manufacturer. Comparing energy production between HAWTs and VAWTs has shown that VAWTs can produce more energy than HAWTs. Using six turbines, VAWTs can produce 48,476 kWh. On the other hand, with four turbines, HAWTs can produce 41,729 kWh. The reason is that VAWT requires shorter distance requirements for inter-turbine and between rows. Therefore, VAWT can use more turbines than HAWT in the limited area. In conclusion, VAWT for high-rise buildings is more preferred because VAWT can generate more energy. Further study should investigate the optimal configuration with varying the wind direction and quantifying the wake effect on power output.

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“…Vertical axis wind turbines can mainly be divided into Darrieus type, Savonius type, and Giromill type . Among them, the Darrieus‐type wind turbines can convert the highest amount of energy due to a higher tip‐speed ratio . The straight‐bladed VAWTs developed from traditional Darrieus‐type wind turbines have simple blade shapes and wind wheel structures, which are convenient to design and install.…”

Section: Introductionmentioning

confidence: 99%

“…Several laboratory vibration tests were conducted to study the dynamic behavior of VAWTs. Wang et al investigated the ambient dynamic responses of a rooftop VAWT and found that the wind direction has little effect on its vibration amplitude. Mclaren et al showed that the vibration of the VAWT support tower may be influenced by the wind turbine's operation.…”

Section: Introductionmentioning

confidence: 99%

“…The main work of the present study is to analyze the surface pressure distribution, flow characteristics, and dynamic responses of a straight‐bladed VAWT under different steady wind conditions, using the two‐way coupling method. Compared with HAWTs, since the wind direction and operating state have relatively small influence on the vibration of straight‐bladed VAWTs, and in order to reduce the workload of the numerical simulation, only the parked conditions of the VAWT at different rotation angles are considered. The following points make this study different from previous ones: (a) the two‐way coupling method is adopted; (b) the dynamic responses of the whole structural system of the VAWT including the blades and support arms are calculated; (c) the variations of the flow around the VAWT under different wind conditions are revealed; (d) the effects of different parked conditions on the surface pressure distribution, flow characteristics, and dynamic responses of the VAWT are analyzed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flow characteristics and dynamic responses of a parked straight‐bladed vertical axis wind turbine

Kuang

Chen

et al. 2019

Energy Science & Engineering

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With the development of urbanization and the application of renewable energy, wind turbine is becoming an important approach for wind energy reservation and utilization. This study provides a numerical investigation on understanding the surface pressure distribution, flow characteristics and dynamic responses of a parked straight‐bladed vertical axis wind turbine (VAWT), which is helpful for its design. Together with the two‐way coupling method between simulation platforms such as STAR‐CCM+ and ABAQUS, the SST k‐ω turbulence model is used to obtain the surface pressure and surrounding flow of the VAWT, and the finite element method is used to obtain the dynamic responses of its structural components. The results show that the contours of the pressure distribution on the windward surface of the VAWT are similar even under a few different conditions, and the deformation of the VAWT can lead to changes in surface pressure; the turbulent flow characteristics and the wake effect become more obvious as the wind velocity increases; the blades and support arms of the VAWT need to be reinforced during the design, and the effect of the parked condition on the dynamic responses of the VAWT can be neglected. The two‐way coupling method as well as the numerical simulation results is expected to provide references for the design of VAWTs subjected to coming wind action.

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Dynamic Study of a Rooftop Vertical Axis Wind Turbine Tower Based on an Automated Vibration Data Processing Algorithm

Cited by 9 publications

References 32 publications

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

Wind Energy Potential on A Highrise Building: A Preliminary Study

Flow characteristics and dynamic responses of a parked straight‐bladed vertical axis wind turbine

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