A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

Apelfröjd, Senad; Eriksson, Sandra; Bernhoff, Hans

doi:10.3390/en9070570

Cited by 33 publications

(27 citation statements)

References 58 publications

(61 reference statements)

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“…Researchers at Uppsala University developed a direct-drive, variable-speed, multi-pole, synchronous permanent magnet (PM) generator, which they used on several small three-bladed experimental vertical axis wind turbines (VAWTs) [48,49]. The concept was upscaled by Vertical Wind AB, a spinoff from the university's VAWT research, which started in 2002, and installed a 200-kW prototype near Falkenberg in 2010 that is still operational (see Figure 4).…”

Section: Vertical Windmentioning

confidence: 99%

Wind Turbines from the Swedish Wind Energy Program and the Subsequent Commercialization Attempts—A Historical Review

Möllerström

2019

Energies

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This paper summarizes wind turbines of Swedish origin, 50 kW and above. Both the large governmental-funded prototypes from the early 1980s and following attempts to build commercial turbines are covered. After the 1973 oil crisis, a development program for wind turbine technology was initiated in Sweden, culminating in the early 1980s with the 2 and 3-MW machines at Maglarp and Näsudden. However, government interest declined, and Sweden soon lost its position as one of the leading countries regarding wind turbine development. Nevertheless, several attempts to build commercial wind turbines in Sweden were made in the following decades. Most attempts have, like the earlier prototypes, used a two-bladed rotor, which has become synonymous with the Swedish wind turbine development line. The current ongoing Swedish endeavors primarily focus on the niche-concept of vertical axis wind turbines (VAWTs), which is a demonstration of how far from the broad commercial market of Sweden has moved. Thus far, none of the Swedish attempts have been commercially successful, and unlike countries like Denmark or Germany, Sweden currently has no large wind turbine producer. Suggested reasons include early government interventions focusing on two-bladed prototypes and political disinterest, with wind power grants cut in half by 1985, and the domestic industry not being favored in government policies for deploying wind power.

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Section: Vertical Windmentioning

confidence: 99%

Wind Turbines from the Swedish Wind Energy Program and the Subsequent Commercialization Attempts—A Historical Review

Möllerström

2019

Energies

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“…The aerogenerator design operates at a significantly lower elevation than the HAWT and still achieves reasonable aerodynamic efficiency with a power coefficient of 0.38, and with a significantly lower overturning moment and centre of gravity than the HAWT. Figure 13a [56]. Researchers at Uppsala university identified that the primary failure in VAWT is gearbox, and direct drive will curtail the downtime and maintenance cost by eliminating the gearbox.…”

Section: Aerogeneratormentioning

confidence: 99%

“…Hence, the focus is on the design of the direct drive synchronous generators suitable for H-rotors. The 36-pole generator developed, as shown in Figure 13b [56], was made of a neodymium-iron-boron permanent magnet rotor to withstand high overload capacity. The variable speed control is achieved by connecting the generator to the frequency drive.…”

Section: Aerogeneratormentioning

confidence: 99%

Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Large Wind Turbines

et al. 2019

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The objective of the current review is to present the development of a large vertical axis wind turbine (VAWT) since its naissance to its current applications. The turbines are critically reviewed in terms of performance, blade configuration, tower design, and mode of failure. The early VAWTs mostly failed due to metal fatigue since the composites were not developed. Revisiting those configurations could yield insight into the future development of VAWT. The challenges faced by horizontal axis wind turbine (HAWT), especially in the megawatt capacity, renewed interest in large scale VAWT. VAWT provides a solution for some of the immediate challenges faced by HAWT in the offshore environment in terms of reliability, maintenance, and cost. The current rate of research and development on VAWT could lead to potential and economical alternatives for HAWT. The current summary on VAWT is envisioned to be an information hub about the growth of the Darrieus turbine from the kW capacity to megawatt scale. turbine to avert the wind load [2] has opened up new areas of application. Innovative turbines are continuing to emerge to address the shortcomings of the original Darrieus design [3,4]. Tailored airfoils are developed for the Darrieus rotor to enhance self-starting capability [5][6][7][8]. Various mathematical models [3,7] are developed to assess the rotor performance. Computational simulation is extensively used to optimise the Darrieus turbine and serves as an alternative for costly prototyping [9]. The evolution of small VAWTs with the capacity of less than 50 kW are reviewed by the author in previous work [10]. This review has been categorised based on the timeline of development. The turbines are examined on their configuration, type of support, specifications, the reason for failure, and current status. The current study is a knowledge hub on past projects that yields valuable information on the failure to develop efficient and cost-effective VAWTs. Though the paper aims to cover most of the turbines that were developed in the past and current ongoing projects, there may be missing projects of which the author is unaware.

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“…Independent of changes in wind direction, the operation is distinguished by turbine wind power installation with a vertical orientation of the turbine axis. In these wind power installation the turbine work due to the forces of resistance to the air flow [3]. However, the main problem of turbine wind power installation of both types is the unpredictability of wind, speed and strength of wind gusts, often changing in short periods of time.…”

Section: Introductionmentioning

confidence: 99%

Justifying and choosing parameters of the wind power installation with an automatically controlled sailing working body

Sholanov¹,

Mirzabaev²,

Abzhaparov³

2018

EAI Endorsed Transactions on Energy Web

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The article considers a wind power installation, which significantly differs from the other existing wind power installations in that it has rocking an automatically controlled sail of a toroidal shape and a manipulator converter of the wind kinetic energy to the mechanical energy of forward motion. Having analyzed aerodynamic variables, timing chart, and having built a simplified dynamic model, the authors determined geometric, kinematic and dynamic properties, which are necessary for the future design engineering, automatic control and research of the wind power installation. The study gives a description of the acting laboratory-scale model of the sail wind power installation and performance test results.

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A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University

Cited by 33 publications

References 58 publications

Wind Turbines from the Swedish Wind Energy Program and the Subsequent Commercialization Attempts—A Historical Review

Wind Turbines from the Swedish Wind Energy Program and the Subsequent Commercialization Attempts—A Historical Review

Review on the Evolution of Darrieus Vertical Axis Wind Turbine: Large Wind Turbines

Justifying and choosing parameters of the wind power installation with an automatically controlled sailing working body

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