Experimental study on the performance of urban small vertical wind turbine with different types

Kang, Deokhun; Shin, Won-Sik; Lee, Jang‐Ho

doi:10.5293/kfma.2014.17.6.064

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…The test models had the same height and diameter of 0.226 m, which provided a blockage ratio of less than 8% when two sets of blades were installed side-by-side in the rectangular digital wind tunnel. As a result, the airflow speed did not need to be corrected to account for the blockage effect in the wind tunnel [11].…”

Section: Test Model and Test Casesmentioning

confidence: 99%

An experiment for the effects of the distance and rotational direction of two neighboring vertical Savonius blades

Jang

Kim

Kang

et al. 2015

Int. J. Energy Res.

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The array effects created between two sets of matching vertical Savonius wind-turbine blades installed side-by-side were examined using two separation distances of 1.0D and 1.5D, and three combinations of rotational directions, making a total of six test scenarios. The three combinations of rotational directions for the two wind turbines consisted of both turbines rotating clockwise, the first clockwise and the second counter clockwise, and finally, the first counter clockwise and the second clockwise. Using a high-precision three-dimensional printer, scaled-down test models of the turbine blades were fabricated, each with a rotational diameter of 0.226 m and an aspect ratio of 1.0. The uncertainty of the test was determined to have a mean value of approximately 2.2%. For each test scenario, the torque and revolutions per minute of the blades were measured using the differential tip speed ratio, and the power coefficient was evaluated based on the oncoming airflow speed. The test results clearly showed that there was a combined effect related to the rotational direction of and the separation distance between the two sets of blades. Better performance could be obtained by considering these parameters for adjacent wind turbines.

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Section: Test Model and Test Casesmentioning

confidence: 99%

An experiment for the effects of the distance and rotational direction of two neighboring vertical Savonius blades

Jang

Kim

Kang

et al. 2015

Int. J. Energy Res.

Self Cite

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“…In contrast, small-scale wind turbines can be grid-connected for residential or industrial electricity generation or can be used in off-grid applications such as water pumping or battery charging. Small-scale wind turbines are typically installed as a single unit or in small numbers [1]. In particular, wind turbines with a rated capacity of 1 kW have gained attention for their excellent adaptability to the urban environment in terms of lower manufacturing and maintenance costs [2,3].…”

Section: Introductionmentioning

confidence: 99%

Optimal Shape Design of Direct-Drive Permanent Magnet Generator for 1 kW-Class Wind Turbines

Park

Kang

Ahn³

et al. 2023

Applied Sciences

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Direct-drive permanent magnet generators are becoming an attractive option for highly efficient small-scale wind turbines due to their high-power density and size reduction capabilities. In this study, the optimal shape design of a direct-drive permanent magnet generator for 1 kW-class wind turbines was conducted while considering power generation and weight. Half of the geometry of a single stage in the generator was considered for a electromagnetic analysis under given electrical parameters. In order to construct a response surface model, a sensitivity analysis was conducted on seven design parameters of the proposed generator. The desirability function was used to minimize the weight of the generator while meeting a requirement of the target specification. The results indicated that the optimized design parameters for the generator met the target specification while maintaining the generator’s weight at the same level as the initial design model. From the comparisons with other research, the optimized generator exhibited a higher power generation/weight ratio than the generator with a rated capacity under 3 kW.

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Flow analysis and optimization of a vertical axis wind turbine blade with a dimple

Yoo

2021

Engineering Applications of Computational Fluid Mechanics

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Experimental study on the performance of urban small vertical wind turbine with different types

Cited by 6 publications

References 3 publications

An experiment for the effects of the distance and rotational direction of two neighboring vertical Savonius blades

An experiment for the effects of the distance and rotational direction of two neighboring vertical Savonius blades

Optimal Shape Design of Direct-Drive Permanent Magnet Generator for 1 kW-Class Wind Turbines

Flow analysis and optimization of a vertical axis wind turbine blade with a dimple

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