Physical testing of performance characteristics of a novel drag-driven vertical axis tidal stream turbine; with comparisons to a conventional Savonius

Harries, Tom; Kwan, Alan Shu Khen; Brammer, James; Falconer, Roger Alexander

doi:10.1016/j.ijome.2016.01.008

Cited by 18 publications

(11 citation statements)

References 22 publications

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“…Rotors for drag force based configurations A, Bronzinus turbine, B, Cardiff University (CU) turbine rotor, C, Flipwing turbine, D, hunter turbine, E, Deflector blade turbine (DBT) turbine, F, Tideng turbine [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

“…GB9524439.8). It is very simple in design and consists of several hinged blades over a drum similar to Flipwing and CU turbine as shown in Figure D. The blades of the turbine are of the same diameter as of the drum.…”

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

“…Harries et al carried out an experimental study to compare the CU turbine and optimized Savonius turbine parameters results available in literature . It was found that the performance of Savonius turbine is superior to CU turbine.…”

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

“…It was found that the torque coefficient of Bronzinus rotor lies in between the torque coefficient developed by the turbine proposed by Kyozuka 108 and Savonius. 86 Harries et al 81 carried out an experimental study to compare the CU turbine and optimized Savonius turbine parameters results available in literature. 43,48,[109][110][111][112] It was found that the performance of Savonius turbine is superior to CU turbine.…”

Section: Investigations On Drag-force-based Configuration Rotorsmentioning

confidence: 99%

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A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Saini

2019

Int J Energy Res

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Summary Increased demand of energy leads to exploration of new sources of energy. In the last few years, hydrokinetic energy technology emerged as an important area in the field of renewable energy generation. Various hydrokinetic turbines have been studied and used to harness the hydrokinetic potential. Among all hydrokinetic turbine technology, cross‐flow hydrokinetic turbine is considered as the most suitable approach for the riverine system. There are various configurations of cross‐flow hydrokinetic turbine exist for hydrokinetic energy extraction. A number of numerical and experimental studies were carried out on the performance enhancement and design optimization of different configurations under variable operating conditions. Under the present paper, review of different rotor for the configurations of the cross‐flow hydrokinetic turbines are discussed. The paper will be useful to understand the cross‐flow hydrokinetic technology in order to explore the methods for selection, performance enhancement, and design optimization of cross‐flow hydrokinetic turbines.

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Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

Section: Investigations On Drag-force-based Configuration Rotorsmentioning

confidence: 99%

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A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Saini

2019

Int J Energy Res

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“…For each tidal current speed, there is a certain rotational speed at which the power curve reaches its maximum value. All of these maxima compose what is known in the literature as the Optimal Regimes Characteristic (ORC) [45][46][47]. As shown in Figure 9, the maximum power for the turbine under study is P n = 1.5 MW at V n = 3.2 m/s.…”

Section: Rsc Rotational Speed Control Designmentioning

confidence: 99%

Complementary Power Control for Doubly Fed Induction Generator-Based Tidal Stream Turbine Generation Plants

Ghefiri

Garrido

et al. 2017

Energies

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The latest forecasts on the upcoming effects of climate change are leading to a change in the worldwide power production model, with governments promoting clean and renewable energies, as is the case of tidal energy. Nevertheless, it is still necessary to improve the efficiency and lower the costs of the involved processes in order to achieve a Levelized Cost of Energy (LCoE) that allows these devices to be commercially competitive. In this context, this paper presents a novel complementary control strategy aimed to maximize the output power of a Tidal Stream Turbine (TST) composed of a hydrodynamic turbine, a Doubly-Fed Induction Generator (DFIG) and a back-to-back power converter. In particular, a global control scheme that supervises the switching between the two operation modes is developed and implemented. When the tidal speed is low enough, the plant operates in variable speed mode, where the system is regulated so that the turbo-generator module works in maximum power extraction mode for each given tidal velocity. For this purpose, the proposed back-to-back converter makes use of the field-oriented control in both the rotor side and grid side converters, so that a maximum power point tracking-based rotational speed control is applied in the Rotor Side Converter (RSC) to obtain the maximum power output. Analogously, when the system operates in power limitation mode, a pitch angle control is used to limit the power captured in the case of high tidal speeds. Both control schemes are then coordinated within a novel complementary control strategy. The results show an excellent performance of the system, affording maximum power extraction regardless of the tidal stream input.

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Drag-Type Hydraulic Rotor

Kang

Liu

Mao

2019

Methods for Solving Complex Problems in Fluids Engineering

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Physical testing of performance characteristics of a novel drag-driven vertical axis tidal stream turbine; with comparisons to a conventional Savonius

Cited by 18 publications

References 22 publications

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Complementary Power Control for Doubly Fed Induction Generator-Based Tidal Stream Turbine Generation Plants

Drag-Type Hydraulic Rotor

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