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Research Papers

Field Operation and Track Tests of 1-kW Small Wind Turbine Under High Wind Conditions

[+] Author and Article Information
Hikaru Matsumiya

 HIKARUWIND Laboratory, Co., Tokyo 157-0066, JapanHIKARUWIND@aol.com

Ryosuke Ito

 Zephyr Corporation, Tokyo 160-0023, Japanito@zephyreco.co.jp

Masafumi Kawakami

 Zephyr Corporation, Tokyo 160-0023, Japankawakami@zephyreco.co.jp

Daisuke Matsushita

 Kyushu University, Fukuoka 819-0385, Japanmatu@mech.kyushu-u.ac.jp

Makoto Iida

 University of Tokyo, Tokyo 153-8902, Japaniida@cfdl.t.u-tokyo.ac.jp

Chuichi Arakawa

 University of Tokyo, Tokyo 153-8902, Japanarakawa@cfdl.t.u-tokyo.ac.jp

J. Sol. Energy Eng 132(1), 011002 (Nov 09, 2009) (8 pages) doi:10.1115/1.4000330 History: Received July 23, 2008; Revised August 31, 2009; Published November 09, 2009

A 1-kW small horizontal-axis wind turbine “Airdolphin,” capable of high wind operation up to 50 m/s without pitch control system, is now under global round robin tests. The present paper reports a series of technical approach including design/analysis, track tests, and field tests conducted in support to the design process. One windy site “Erimo” and one offshore site “Fukushima” were chosen. For example, at “Erimo,” a record of one-day generation was 8.831 kWh on November 13, 2006 (day-averaged wind speed; 11.8 m/s) with 36.8% of capacity factor. An operation data under an attack of typhoon with 50 m/s maximum wind speed demonstrated the technical concepts of high wind operation and safety. A new term “capatureability” as an indicator of WT performance was proposed.

Copyright © 2010 by American Society of Mechanical Engineers
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References

Figures

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Figure 15

CF/CPT versus Vrated/Vave (ηrated=0.4, Weibull parameter k=1.4–2.0)

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Figure 16

Captureability and capacity factor of Airdolphin for different annual mean wind speeds and different Weibull parameters k

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Figure 14

Operation data under typhoon in September 2007

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Figure 13

Comparison of the three power performance curves obtained from one-day data set on October 27–29, 2007. Data sets are 1-min pre-averaged and then Bin-averaged.

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Figure 12

Bin-averaged f, CF, and CP of Airdolphin No. 1

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Figure 11

Bin-averaged power performance of Airdolphin No. 1 in October 2007

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Figure 10

10-min average power versus wind speed of Airdolphin No. 1 in October 2007

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Figure 9

Power performance estimation of Airdolphin No. 1

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Figure 8

One-day operation data (upper: power output, lower: wind speed)

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Figure 7

Top view of the offshore site

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Figure 6

Views of the Fukushima offshore site

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Figure 5

Operation data at Erimo in January 2007

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Figure 4

Site map of the Erimo and Fukushima offshore sites

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Figure 3

Effect of stall control under high winds

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Figure 2

Relation between speed and power output of the generator for various wind speeds and supply voltages obtained by track tests

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