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同步电感提取技术在压电风能采集装置中的应用

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  • 上传时间： 2024-03-29
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  • 标      签： 同步电感提取技术

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虽然同步电感能量提取技术(SSHI)能够显著提高压电能量采集装置的采集效率,但需要额外的位移传感器对压电片的动作状态进行检测,在压电片发生复杂形变时此方法不适用。为了提升俘能电路在非线性激励下的工作效率,本文基于小旗式压电风能采集装置,设计了一种新型自供电、自感知式同步电感能量采集接口电路,该电路可以根据压电片输出的电压判断压电片的形变量,实现同步电感开关的自动控制。同时,利用Multisim电路仿真软件,对标准接口电路及新型接口电路进行仿真分析。仿真结果表明,新型接口电路能够有效提高俘能电路在非线性激励下的能量俘获效率,与传统俘能电路相比,新型俘能电路可以使输出功率提升30%。该研究为非线性俘能电路的设计提供了理论依据。

Synchronized switch harvesting on inductor(SSHI)can significantly improve the efficiency of the piezoelectric energy harvesting device.However,this technology requires additional displacement sensors to detect the deformation of the piezoelectric plate and cannot meet the needs of the complex deformation of piezoelectric plate.In order to improve the working efficiency of the harvesting circuit under nonlinear excitation,a novel self-powered,self-sensing synchronous inductance energy harvesting interface circuit is designed based on the flag-type piezoelectric wind energy harvesting device.The circuit can judge the deformation of the piezoelectric plate according to the voltage output from the piezoelectric plate,and realize the automatic control of the synchronous inductance switch.Using multisim circuit simulation software to simulate and analyze the standard interface circuit and the new interface circuit,the results show that the new interface circuit can effectively improve the energy harvest efficiency of the harvesting circuit under nonlinear excitation.Compared with the traditional harvesting circuit,the new harvesting energy circuit can increase output power by 30%.This study provides a theoretical basis for the design of nonlinear captive circuits.

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