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首页> 外文会议>Conference on Active and passive smart structures and integrated systems; 20090309-12; San Diego, CA(US) >Generation of electrical energy using short piezoelectric cantilevers in flowing media
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Generation of electrical energy using short piezoelectric cantilevers in flowing media

机译：使用短压电悬臂在流动介质中产生电能

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摘要

The power supply of wireless sensor systems is an issue of growing importance since replacement of batteries is very expensive over the sensor lifetime. An energy harvesting system which generates electrical energy from flowing media without any rotating parts will be presented. The harvester consists of piezoelectric cantilevers which oscillate in a media flow and convert kinetically energy into electrical energy. A model of the harvester was developed and the influence of geometrical parameters was simulated. Important design information was achieved as result of the simulation. Several harvester systems were built up using commercially available and not optimized PZT ceramic plates. Measurements were carried out in wind and water channels. It was found that the output voltage of the harvesters increase with the streaming velocity of the media. An output power of about 0.1 mW was achieved at power adjustment in air. Optimized harvesters could deliver an up to two orders higher output.
机译：无线传感器系统的电源问题变得越来越重要，因为更换电池在传感器的使用寿命中非常昂贵。将介绍一种能量收集系统，该系统无需任何旋转部件即可从流动介质中产生电能。收割机由压电悬臂组成，它们在介质流中振荡并将动能转化为电能。开发了收割机模型，并模拟了几何参数的影响。仿真结果获得了重要的设计信息。使用市场上未优化的PZT陶瓷板构建了多个收割机系统。在风和水通道中进行测量。已经发现，收割机的输出电压随着介质的流动速度而增加。在空气中进行功率调整时，可获得约0.1 mW的输出功率。优化的收割机可以将产量提高多达两个订单。

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