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<p>We are in an era where electronic devices and machines are interconnected through sensor nodes to manage technology and communication. Sensors and sensor nodes typically require only small amounts of power. In areas where power is unavailable, batteries are commonly used to operate these devices. However, batteries come with the limitations of frequent replacement and a short lifespan. To address these issues, batteries can be replaced with self-powered devices. Wind energy is universally available, although its velocity varies with location and over time. In this article, we propose and develop a PZT-based energy harvester capable of generating electricity at different wind speeds. The development of this device addresses two key problems: the need for battery replacement and inefficiency at low wind speeds. For power generation, the angular motion of the windmill is converted into electrical energy using piezoelectric cantilever beams, which are positioned at varying distances from the axis of rotation to regulate torque at different wind speeds. Excitations in the beams are triggered by magnetic field interactions. Magnets are mounted on both the beams and the sliding masses, which move within the slots of the rotating hub. Experimental results were compared and validated against simulation data. At a low wind speed of 1.5&#xa0;m/s, the measured power output was 0.54 mW, while at normal wind speed of 5&#xa0;m/s, the observed power increased to 2.35 mW.</p>

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Design and Analysis of Rotary Piezoelectric Energy Harvester for Adaptive Wind Speed Conditions

  • 期刊论文

  • 发表日期：

    2025年5月7日

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  • Tejkaran Narolia,
  • Manish singh Bharti,
  • Anjali Pathak

摘要

We are in an era where electronic devices and machines are interconnected through sensor nodes to manage technology and communication. Sensors and sensor nodes typically require only small amounts of power. In areas where power is unavailable, batteries are commonly used to operate these devices. However, batteries come with the limitations of frequent replacement and a short lifespan. To address these issues, batteries can be replaced with self-powered devices. Wind energy is universally available, although its velocity varies with location and over time. In this article, we propose and develop a PZT-based energy harvester capable of generating electricity at different wind speeds. The development of this device addresses two key problems: the need for battery replacement and inefficiency at low wind speeds. For power generation, the angular motion of the windmill is converted into electrical energy using piezoelectric cantilever beams, which are positioned at varying distances from the axis of rotation to regulate torque at different wind speeds. Excitations in the beams are triggered by magnetic field interactions. Magnets are mounted on both the beams and the sliding masses, which move within the slots of the rotating hub. Experimental results were compared and validated against simulation data. At a low wind speed of 1.5 m/s, the measured power output was 0.54 mW, while at normal wind speed of 5 m/s, the observed power increased to 2.35 mW.