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Vibration energy harvesting using piezoelectric transducer and non-controlled rectifiers circuits

机译:使用压电换能器和非受控整流器电路收集振动能量

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Vibration energy harvesting with piezoelectric materials is of practical interest because of the demand for wireless sensing devices and low-power portable electronics without external power supply. For practical use of vibration energy harvester with piezoelectric materials, it is necessary to process the alternating current (AC) by using different rectifiers' circuits in order to charge batteries with direct current (DC) or to feed electronic devices. Unfortunately, most of the models used focused on simplifying the energy harvesting circuit into a simple resistive load. In the real-world applications, the energy harvesting external circuit is more complex than a simple load resistance. In this sense, the goal of the present paper is to describe a comprehensive strategy for power harvesting device to estimate the output power provided by a cantilever beam with the electrodes of the piezoceramic layers connected to a standard rectifier circuit. The true electrical components were considered in the full-wave rectifier circuit with four diodes in bridge. A very simple and comprehensive description for choosing the capacitance and resistance loads is provided. In order to illustrate the results, numerical simulations and experimental verifications are also performed to ensure the accuracy. All tests and results are described and detailed using Matlab, the SimPowerSystem toolbox of the Simulink and an experimental setup.
机译:由于需要无线传感设备和无外部电源的低功耗便携式电子设备,因此使用压电材料收集振动能量非常实用。对于带有压电材料的振动能量收集器的实际使用,有必要使用不同的整流器电路处理交流电(AC),以便用直流电(DC)为电池充电或为电子设备供电。不幸的是,所使用的大多数模型都集中于将能量收集电路简化为简单的电阻负载。在实际应用中,能量收集外部电路比简单的负载电阻更为复杂。从这个意义上讲,本论文的目的是描述一种功率收集设备的综合策略,以估算压电陶瓷层的电极连接到标准整流器电路的悬臂梁提供的输出功率。在全波整流电路中考虑了真正的电气组件,桥中有四个二极管。提供了一个用于选择电容和电阻负载的非常简单而全面的描述。为了说明结果,还进行了数值模拟和实验验证以确保准确性。使用Matlab,Simulink的SimPowerSystem工具箱和实验设置来描述和详细描述所有测试和结果。

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