A wind-flutter energy converter for powering wireless sensors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

63 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)163-171
Journal / PublicationSensors and Actuators, A: Physical
Volume173
Issue number1
Publication statusPublished - Jan 2012
Externally publishedYes

Abstract

This paper describes a low-speed wind energy harvesting system that transfers aerodynamically induced flutter energy into electrical energy. A random airflow generates mechanical vibrations due to the fluid-structure interaction between a flexible belt and the airflow. An electromagnetic resonator with copper coils and a permanent magnet is designed to efficiently harvest electrical energy from the induced mechanical vibrations. Different groups of springs are compared at various wind conditions to maximize the power output. Typically ∼7 mW of electrical energy can be obtained at ∼3 m/s wind speed with a 1 m long belt. A power conditioning circuit with a charge pump and a DC-DC converter is used to convert the generated voltage into a stable 3.3 V DC for consumption. It is demonstrated that this generator can be used to drive a commercial wireless temperature sensor. © 2011 Elsevier B.V. All rights reserved.

Research Area(s)

  • Electromagnetic generator, Energy conversion, Flutter, Power management circuit, Wind power

Citation Format(s)

A wind-flutter energy converter for powering wireless sensors. / Fei, Fei; Mai, John D.; Li, Wen Jung.
In: Sensors and Actuators, A: Physical, Vol. 173, No. 1, 01.2012, p. 163-171.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review