An Application of Straight Wing Vertical Axis Wind Turbine Generation Systems

Sagara, Keita; Nomoto, Kosuke; Seki, Kazuichi

doi:10.1299/jsmemecjo.2003.2.0_77

Cited by 2 publications

(2 citation statements)

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“…The SW-VAWT with swept area of 5 m 2 is shown in Figure 1 and the power performance of it is shown in Figure 2 [2]. When the shape of the wind turbine is fixed, the relation between power coefficient Cp and tip speed ratio λ is settled.…”

Section: Principlementioning

confidence: 99%

A Passive System for Optimising Battery Charging using a Permanent Magnet, Variable Speed Generator

et al. 2011

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The performance of a permanent magnet, variable speed generator charging a battery via a PWM converter or rectifier is considered. It is found that in neither case can the system be configured to generate electricity at low wind speeds while maintaining optimum efficiency at rated wind speed. Accordingly, an alternative system which permits operation at close to optimum efficiency over the full range of wind speeds below rated is proposed. This uses two separate generator windings, one of which begins to charge the battery at a much lower wind speed than the other. Experimental results are presented which confirm the theoretical analysis.

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Section: Principlementioning

confidence: 99%

A Passive System for Optimising Battery Charging using a Permanent Magnet, Variable Speed Generator

et al. 2011

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“…Wind turbines and water wheels are built around the station. Straight blade vertical axis wind turbines are suitable for this system, since wind turbine noise is less than that of horizontal axis wind turbines [6,7]. A unit of electric double layer capacitor (EDLC), called as "the primary EDLC," is installed at the station as an energy storage device, and the primary EDLC is always charged from solar panels, wind turbines and water wheels.…”

Section: Introductionmentioning

confidence: 99%

An energy storage and rapid charge system using EDLC for the Solar Light Rail

Kameya¹,

Uddin²,

Suzuki³

et al. 2014

WIT Transactions on the Built Environment

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"The Solar Light Rail" is a proposed power supply method for a 100% renewable energy light rail system. Experiments using a prototype model were carried out in all four seasons in order to verify whether the proposed system can function effectively throughout the day. The primary electric double layer capacitor (EDLC) unit, with a breakdown voltage of 17.5 V and a capacitance of 171.4 F, is charged by solar panels. The secondary EDLC unit which has a breakdown voltage of 15.0 V and a capacitance of 100 F is mounted on the railcar and is charged rapidly by the primary EDLC. The railcar leaves and returns on a straight rail of 9 meters by charged energy, and the secondary EDLC is charged from the primary EDLC again. It was confirmed that the proposed power supply method was effective even in a climate with little or no sunshine, and also that it is necessary to raise the breakdown voltage and capacitance of the primary EDLC to ensure long-term operation after sunset.

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An Application of Straight Wing Vertical Axis Wind Turbine Generation Systems

Cited by 2 publications

References 0 publications

A Passive System for Optimising Battery Charging using a Permanent Magnet, Variable Speed Generator

A Passive System for Optimising Battery Charging using a Permanent Magnet, Variable Speed Generator

An energy storage and rapid charge system using EDLC for the Solar Light Rail

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