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首页> 外文会议>Proceedings of 4th International Workshop on Piezoelectric Materials and Applications in Actuators >Modeling、Simulation and Optimization of a High Efficiency Piezoelectric Energy Harvester
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Modeling、Simulation and Optimization of a High Efficiency Piezoelectric Energy Harvester

机译：高效压电能量采集器的建模，仿真与优化

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The never-ending drive towards self-powered devices poses severe challenges for the energy harvester designer.In particular,raising the efficiency of a piezoelectric energy harvester is becoming more and more important,especially in the presence of a significant vibration.However,the existing energy harvesters are simply rectifying the AC output from the piezoelectric elements,and in this situation the energy harvesting efficiency is low.In this paper we show that by applying a switching power converter the power transformation efficiency can be enhanced by more than 400%.This switching power converter is derived from the Buck-Boost Converter,and in this work it is optimized by using a control circuitry of low power consumption.The whole circuitry has been modeled and simulated in the Pspice software.The simulation results show that after optimization the proposed energy harvester can provide a much higher output power,and at the same time,the power transformation efficiency from the mechanical input to elecric output has been significantly increased.The proposed system exhibits efficiency as a high power piezoelectric energy harvester.
机译：自供电设备的永无止境的发展对能量收集器的设计人员提出了严峻的挑战。特别是在存在明显振动的情况下，提高压电能量收集器的效率变得越来越重要。能量收集器仅对压电元件的交流输出进行整流，在这种情况下能量收集效率很低。本文表明，通过使用开关电源转换器，可以将功率转换效率提高400％以上。开关电源转换器是从Buck-Boost转换器派生而来的，在这项工作中，它使用低功耗的控制电路进行了优化。整个电路已在Pspice软件中进行了建模和仿真。仿真结果表明，优化后的提出的能量采集器可以提供更高的输出功率，同时，从机械输入到电子输出已大大增加。拟议的系统显示出作为大功率压电能量收集器的效率。

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