An Energy Harvester for Low‐Frequency Electrical Signals,Energy Technology

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An Energy Harvester for Low‐Frequency Electrical Signals
Energy Technology ( IF 3.6 ) Pub Date : 2020-04-01 , DOI: 10.1002/ente.202000114
Xin Wang _{1,

2} , Peter R. Wilson ₁ , Ricardo B. Leite ₃ , Guiyou Chen ₂ , Helena Freitas ₄ , Kamal Asadi ₅ , Edsger C. P. Smits ₆ , Ilias Katsouras ₆ , Paulo R. F. Rocha ₁

Affiliation

Generating electricity from low‐frequency mechanical agitations produced by ocean waves, plants, or human motion is emerging as a key, environmentally friendly technology in combating harmful emissions caused by burning fossil fuels. The electric pulses generated by the appropriate transducers, such as triboelectric or piezoelectric generators, have to be rectified and stored in a sustainable external circuit. The bottleneck, however, is the harvesting circuitry, which relies on rather expensive up‐conversion oscillation technologies. Such circuits are primarily designed and optimized for frequencies well above the kHz range, much higher than the aforementioned mechanical stimuli, and are therefore energy demanding. Herein, a sustainable energy harvester is developed that alleviates the need for using up‐conversion and allows efficient harvesting of energy from low‐frequency voltage pulses, such as the ones typically generated by triboelectric or piezoelectric generators. The resonant circuit is designed to match overall response originating from such low‐frequency oscillating energy sources. The design enables the harvester to be operable at frequencies as low as 1 Hz. Computer aided design simulations are demonstrated, which are miniaturized harvesters on a printed‐circuit board using low‐cost components, and scalability of the proposed design is discussed, which paves the way to affordable, efficient, and sustainable low‐cost energy solutions.

中文翻译：

低频电信号的能量收集器

通过海浪，植物或人体运动产生的低频机械搅动来发电，正在成为一种重要的环保技术，可用来对抗燃烧化石燃料所造成的有害排放。由适当的换能器（如摩擦电或压电发电机）产生的电脉冲必须进行整流，并存储在可持续的外部电路中。但是，瓶颈是采集电路，它依赖于相当昂贵的上变频振荡技术。此类电路主要针对远高于kHz范围，远高于上述机械刺激的频率进行设计和优化，因此需要能量。在这里开发了一种可持续的能量收集器，可减轻使用上转换的需求，并允许从低频电压脉冲（例如通常由摩擦电或压电发电机产生的脉冲）中有效地收集能量。谐振电路旨在匹配源自此类低频振荡能源的整体响应。该设计使收割机能够以低至1 Hz的频率运行。演示了计算机辅助设计仿真，该仿真是使用低成本组件的印刷电路板上的小型收割机，并讨论了拟议设计的可扩展性，从而为可负担，高效和可持续的低成本能源解决方案铺平了道路。例如通常由摩擦发电机或压电发电机产生的发电机。谐振电路旨在匹配源自此类低频振荡能源的整体响应。该设计使收割机能够以低至1 Hz的频率运行。演示了计算机辅助设计仿真，该仿真是使用低成本组件的印刷电路板上的小型收割机，并讨论了拟议设计的可扩展性，从而为可负担，高效和可持续的低成本能源解决方案铺平了道路。例如通常由摩擦发电机或压电发电机产生的发电机。谐振电路旨在匹配源自此类低频振荡能源的整体响应。该设计使收割机能够以低至1 Hz的频率运行。演示了计算机辅助设计仿真，该仿真是使用低成本组件的印刷电路板上的小型收割机，并讨论了拟议设计的可扩展性，从而为可负担，高效和可持续的低成本能源解决方案铺平了道路。

更新日期：2020-04-01

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