Design of a magnetic force exciter for a small-scale windmill using a piezo-composite generating element

Hung Truyen Luong; Nam Seo Goo

doi:10.1117/12.879871

27 April 2011 Design of a magnetic force exciter for a small-scale windmill using a piezo-composite generating element

Hung Truyen Luong, Nam Seo Goo

Proceedings Volume 7977, Active and Passive Smart Structures and Integrated Systems 2011; 79770G (2011) https://doi.org/10.1117/12.879871
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

We introduce a design for a magnetic force exciter that applies vibration to a piezo-composite generating element (PCGE) for a small-scale windmill to convert wind energy into electrical energy. The windmill can be used to harvest wind energy in urban regions. The magnetic force exciter consists of exciting magnets attached to the device's input rotor, and a secondary magnet that is fixed at the tip of the PCGE. Under an applied wind force, the input rotor rotates to create a magnetic force interaction to excite the PCGE. Deformation of the PCGE enables it to generate the electric power. Experiments were performed to test power generation and battery charging capabilities. In a battery charging test, the charging time for a 40 mAh battery is approximately 1.5 hours for a wind speed of 2.5 m/s. Our experimental results show that the prototype can harvest energy in urban areas with low wind speeds, and convert the wasted wind energy into electricity for city use.

Citation Download Citation

Hung Truyen Luong and Nam Seo Goo "Design of a magnetic force exciter for a small-scale windmill using a piezo-composite generating element", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79770G (27 April 2011); https://doi.org/10.1117/12.879871

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