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<p>This paper introduces a novel piezoaeroelastic energy harvester with an elliptical-shaped bluff body, designed to harvest energy at midrange wind speeds (4–8 m/s). A mathematical model of the aeroelastic structure was developed to examine the effect of wind velocity, load resistance, and angle of attack on the dynamic response and power generation capabilities. The elliptical geometry combines the strengths of low- and high-wind-speed harvesters, and enables optimized energy capture in the midrange regime. A prototype was fabricated to validate the proposed design, and experimental tests were conducted. Results demonstrated strong agreement between simulations and experiments, and confirmed the harvester’s effectiveness. Under optimal conditions—7.3 m/s wind speed, 50 MΩ load resistance, and a 61° angle of attack—the harvester achieved a sustained average power output of 10.5 mW. This work lays a strong foundation for midrange wind energy generation and showcases the potential of the elliptical design.</p>

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Piezoaeroelastic energy harvester: Design, simulation, and experimental analysis for midrange wind speed

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Prateek Upadhyay,
  • Sujoy Mukherjee

摘要

This paper introduces a novel piezoaeroelastic energy harvester with an elliptical-shaped bluff body, designed to harvest energy at midrange wind speeds (4–8 m/s). A mathematical model of the aeroelastic structure was developed to examine the effect of wind velocity, load resistance, and angle of attack on the dynamic response and power generation capabilities. The elliptical geometry combines the strengths of low- and high-wind-speed harvesters, and enables optimized energy capture in the midrange regime. A prototype was fabricated to validate the proposed design, and experimental tests were conducted. Results demonstrated strong agreement between simulations and experiments, and confirmed the harvester’s effectiveness. Under optimal conditions—7.3 m/s wind speed, 50 MΩ load resistance, and a 61° angle of attack—the harvester achieved a sustained average power output of 10.5 mW. This work lays a strong foundation for midrange wind energy generation and showcases the potential of the elliptical design.