Strategies for Enhancing the Low Wind Speed Performance of H-Darrieus Wind Turbine—Part 1

Palanisamy Mohan Kumar, Krishnamoorthi Sivalingam, Teik-Cheng Lim, Seeram Ramakrishna and He Wei
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Palanisamy Mohan Kumar: Centre for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Engineering Drive 3, Singapore 117587, Singapore
Krishnamoorthi Sivalingam: School of Science and Technology, Singapore University of Social Sciences, 463 Clementi Rd, Singapore 59949, Singapore
Teik-Cheng Lim: School of Science and Technology, Singapore University of Social Sciences, 463 Clementi Rd, Singapore 59949, Singapore
Seeram Ramakrishna: Centre for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Engineering Drive 3, Singapore 117587, Singapore
He Wei: Singapore Institute of Manufacturing Technology, Surface Technology group, A*STAR, Fusionopolis way 2, Innovis, Singapore 138634, Singapore

Clean Technol., 2019, vol. 1, issue 1, 1-20

Abstract: Small wind turbines are key devices for micro generation in particular, with a notable contribution to the global wind energy sector. Darrieus turbines, despite being highly efficient among various types of vertical axis turbines, received much less attention due to their starting characteristics and poor performance in low wind speeds. Radically different concepts are proposed as a potential solution to enhance the performance of Darrieus turbine in the weak wind flows, all along the course of Darrieus turbine development. This paper presents a comprehensive review of proposed concepts with the focus set on the low wind speed performance and critically assessing their applicability based on economics, reliability, complexity, and commercialization aspects. The study is first of its kind to consolidate and compare various approaches studied on the Darrieus turbine with the objective of increasing performance at low wind. Most of the evaluated solutions demonstrate better performance only in the limited tip speed ratio, though they improve the low wind speed performance. Several recommendations have been developed based on the evaluated concepts, and we concluded that further critical research is required for a viable solution in making the Darrieus turbine a low speed device.

Keywords: VAWT; low wind speed; Darrieus; self-starting; power coefficient; drag; airfoil; Giromill; camber (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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