Optimizing the design of horizontal-axis small wind turbines: From the laboratory to market

Scappatici, Lorenzo; Bartolini, Nicola; Castellani, Francesco; Astolfi, Davide; Garinei, Alberto; Pennicchi, Marcello

doi:10.1016/j.jweia.2016.04.006

Cited by 45 publications

(27 citation statements)

References 32 publications

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“…However, small turbines have varying features due to their field of application. This study, however, has considered the economic impacts of the installation of wind turbine systems in remote zones, as proposed in the literature [60]. It may be noted that various sites of wind zone including Proposed Site 2 (Baluchistan), of this study are located far away from the existing power transmission network, therefore, a new power transmission network is required essentially for the dIspatch of generated electricity.…”

Section: Proposing High Voltage Direct Current Transmission System Fomentioning

confidence: 99%

A Research on Electricity Generation from Wind Corridors of Pakistan (Two Provinces): A Technical Proposal for Remote Zones

et al. 2017

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Abstract:The non-renewable energy resources are limited and depleting gradually. As such, energy security has attained the greatest amount of attention globally than ever before. In the meantime, energy crises are already affecting the developing countries such as Pakistan, even though one-third of the population of the country is not even not connected to the national electricity grid. The population with access to on-grid electricity is enduring load shedding of more than 12 h a day. This situation is alarming and require immediate attention is required so as to add alternative energy resources to the country, which has long been relying on imported fuels. It is, therefore, high time that the abundant potential in the renewable energy resources of Pakistan such as solar, wind, and biomass are harnessed. These renewable energy resources are economical and environmentally friendly, and thus considered as sustainable, and the utilization of these in meeting energy demands can help to conserve conventional resources early diminishing. This paper provides a detailed description of the energy consumption and load-shedding scenario in Pakistan thereby focusing specifically Sindh and Baluchistan provinces. Since, wind energy is considered one of the cost-effective renewable resources, six potential sites in these two provinces are considered in this study. These sites lie within 250 km of the southeastern and 800 km of the southwestern regions of Pakistan. One-year wind speed data have been reported for variable heights of these proposed sites which represent to have an annual average wind speed of 6.63 m/s and 5.33 m/s respectively. The power generation data for these location of two provinces is 7.653 GWh, and 5.456 GWh per annum respectively. This study also elaborates on the advantages and disadvantages of harvesting and installing the wind energy and provides a technical proposal for the generation of electricity from the wind in the selected remote zones which are off the national grid. The findings of this paper will help concerned government departments to devise appropriate policies and attract investment in the wind energy sector to eradicate the on-going electricity crisis.

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Section: Proposing High Voltage Direct Current Transmission System Fomentioning

confidence: 99%

A Research on Electricity Generation from Wind Corridors of Pakistan (Two Provinces): A Technical Proposal for Remote Zones

et al. 2017

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“…Moreover, the primary aim of these methods is usually to improve C p,max at λ dgn [11][12][13][14][15][16] based on the implicit assumption that VSWTs can be maintained at λ dgn by the MPPT controller. Therefore, λ dgn that can contribute to the increasing of C p,max is of high priority.…”

Section: Determination Of λ Dgn For the Inverse Design Methodsmentioning

confidence: 99%

“…Therefore, the aerodynamic optimization of wind turbine rotors plays a crucial role in the design of wind turbines. Generally, the current aerodynamic design for wind turbines is divided into two major categories: the direct method [2][3][4][5][6][7][8][9][10] and the inverse method [11][12][13][14][15][16][17]. As compared with the former, the latter is distinguished by its clear principle, analytical process and fast convergence.…”

Section: Introductionmentioning

confidence: 99%

“…In this region, the maximum power point tracking (MPPT) control is employed to regulate rotor speed according to wind speed variation so that the VSWT can be maintained at the design tip speed ratio (TSR) λ dgn (also called the optimal TSR λ opt ) [21]. Therefore, in the conventional inverse methods for the aerodynamic optimization of VSWTs, such as the Glauert method [11], the Wilson method [12] and others [13][14][15][16][17] based on the blade element momentum (BEM) theory, the primary objective is to maximize the power coefficient at a specified λ dgn .…”

Section: Introductionmentioning

confidence: 99%

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Inverse Aerodynamic Optimization Considering Impacts of Design Tip Speed Ratio for Variable-Speed Wind Turbines

Yang

Zou

et al. 2016

Energies

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Abstract:Because of the slow dynamic behavior of the large-inertia wind turbine rotor, variable-speed wind turbines (VSWTs) are actually unable to keep operating at the design tip speed ratio (TSR) during the maximum power point tracking (MPPT) process. Moreover, it has been pointed out that although a larger design TSR can increase the maximum power coefficient, it also greatly prolongs the MPPT process of VSWTs. Consequently, turbines spend more time operating at the off-design TSRs and the wind energy capture efficiency is decreased. Therefore, in the inverse aerodynamic design of VSWTs, the static aerodynamic performance (i.e., the maximum power coefficient) and the dynamic process of MPPT should be comprehensively modeled for determining an appropriate design TSR. In this paper, based on the inverse design method, an aerodynamic optimization method for VSWTs, fully considering the impacts of the design TSR on the static and dynamic behavior of wind turbines is proposed. In this method, to achieve higher wind energy production, the design TSR, chord length and twist angle are jointly optimized, which is structurally different from the conventional separated design procedure. Finally, the effectiveness of the proposed method is validated by simulation results based on the Bladed software.

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“…Scappatici et al [181] proposed a laboratory to market approach for the design of blades made of glass fiber-reinforced polymer for small wind turbines. Finite Element Method was employed for numerical simulation of the distribution of the stresses along the blade.…”

Section: Starting Behavior Of the Wind Turbinesmentioning

confidence: 99%

Horizontal Axis Wind Turbine Blade Design Methodologies for Efficiency Enhancement—A Review

et al. 2018

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Among renewable sources of energy, wind is the most widely used resource due to its commercial acceptance, low cost and ease of operation and maintenance, relatively much less time for its realization from concept till operation, creation of new jobs, and least adverse effect on the environment. The fast technological development in the wind industry and availability of multi megawatt sized horizontal axis wind turbines has further led the promotion of wind power utilization globally. It is a well-known fact that the wind speed increases with height and hence the energy output. However, one cannot go above a certain height due to structural and other issues. Hence other attempts need to be made to increase the efficiency of the wind turbines, maintaining the hub heights to acceptable and controllable limits. The efficiency of the wind turbines or the energy output can be increased by reducing the cut-in-speed and/or the rated-speed by modifying and redesigning the blades. The problem is tackled by identifying the optimization parameters such as annual energy yield, power coefficient, energy cost, blade mass, and blade design constraints such as physical, geometric, and aerodynamic. The present paper provides an overview of the commonly used models, techniques, tools and experimental approaches applied to increase the efficiency of the wind turbines. In the present review work, particular emphasis is made on approaches used to design wind turbine blades both experimental and numerical, methodologies used to study the performance of wind turbines both experimentally and analytically, active and passive techniques used to enhance the power output from wind turbines, reduction in cut-in-speed for improved wind turbine performance, and lastly the research and development work related to new and efficient materials for the wind turbines.

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Optimizing the design of horizontal-axis small wind turbines: From the laboratory to market

Cited by 45 publications

References 32 publications

A Research on Electricity Generation from Wind Corridors of Pakistan (Two Provinces): A Technical Proposal for Remote Zones

A Research on Electricity Generation from Wind Corridors of Pakistan (Two Provinces): A Technical Proposal for Remote Zones

Inverse Aerodynamic Optimization Considering Impacts of Design Tip Speed Ratio for Variable-Speed Wind Turbines

Horizontal Axis Wind Turbine Blade Design Methodologies for Efficiency Enhancement—A Review

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