A rotary-type energy harvester for the applications having space restrictions has been designed and developed to harvest the energy from rotary motion system. The rotation kinetic energy is converted into electrical energy through a lead zirconate titanate patch, which is strained by magnetic force. Most of the researchers used d31 mode of the piezoelectric material of such conversion. Some researchers have explored d33 mode harvester with piezo patch along the circumferential direction. In this article, d33 mode of harvesting with radial direction piezo patch has been proposed. Mathematical and finite element models are developed to calculate the harvested energy. The results are experimentally verified. The average output power of 14.48 nW is generated corresponding to the magnetic force of 0.3126 N and rotational speed of 2100 r/min. The results from the mathematical and finite element models are observed to be consistent with the experimental results. Such harvester will be useful for the applications having space limitations such as self-power generation in an artillery shell and rotary projectile.

中文翻译：

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旋转式能量收集器的设计与试验研究

已经设计和开发了一种适用于空间受限应用的旋转式能量收集器，以从旋转运动系统中收集能量。旋转动能通过被磁力拉紧的锆钛酸铅贴片转化为电能。大多数研究人员使用d31模式的这种转换压电材料。一些研究人员已经探索了沿圆周方向带有压电贴片的d33模式采集器。在本文中，提出了具有径向压电贴片的 d33 采集模式。开发了数学和有限元模型来计算收集到的能量。结果得到了实验验证。对应于0.3126 N的磁力和2100 r/min的转速，产生14.48 nW的平均输出功率。观察到数学和有限元模型的结果与实验结果一致。这种收割机将适用于具有空间限制的应用，例如炮弹和旋转弹丸中的自发电。