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Proceedings Paper

Design of a miniature wind turbine for powering wireless sensors
Author(s): F. J. Xu; F. G. Yuan; J. Z. Hu; Y. P. Qiu
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Paper Abstract

In this paper, a miniature wind turbine (MWT) system composed of commercially available off-the-shelf components was designed and tested for harvesting energy from ambient airflow to power wireless sensors. To make MWT operate at very low air flow rates, a 7.6 cm thorgren plastic Propeller blade was adopted as the wind turbine blade. A sub watt brushless DC motor was used as generator. To predict the performance of the MWT, an equivalent circuit model was employed for analyzing the output power and the net efficiency of the MWT system. In theory, the maximum net efficiency 14.8% of the MWT system was predicted. Experimental output power of the MWT versus resistive loads ranging from 5 ohms to 500 ohms under wind speeds from 3 m/s to 4.5 m/s correlates well with those from the predicted model, which means that the equivalent circuit model provides a guideline for optimizing the performance of the MWT and can be used for fulfilling the design requirements by selecting specific components for powering wireless sensors.

Paper Details

Date Published: 1 April 2010
PDF: 9 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 764741 (1 April 2010); doi: 10.1117/12.847429
Show Author Affiliations
F. J. Xu, Donghua Univ. (China)
North Carolina State Univ. (United States)
F. G. Yuan, North Carolina State Univ. (United States)
J. Z. Hu, North Carolina State Univ. (United States)
Y. P. Qiu, Donghua Univ. (China)

Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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