Energy Harvesting of Magnetic Power-Line Noise
Energy Harvesting of Magnetic Power-Line Noise
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DOI：
10.1109/tmag.2011.2158190
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发表时间：
2011-09
影响因子：
2.1
通讯作者：
K. Tashiro;H. Wakiwaka;S. Inoue;Y. Uchiyama
中科院分区：
文献类型：
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作者：
K. Tashiro;H. Wakiwaka;S. Inoue;Y. Uchiyama
本研究的目的是演示电力线磁噪声的能量收集。据作者所知，目前还没有开展任何研究来证实这种可能性。本文提出了一种简单的电路设计模型，并通过实验结果验证了其有效性。对于无线传感器网络中的小型自给自足设备，目标能量水平为1mw。我们制作了一个带有空芯线圈和谐振电容的能量收集模块。根据实验和模拟结果，我们研究了从60 Hz的均匀磁场中收获1 mW的所需条件。通过铁芯的实验结果，讨论了使用磁芯的优点和缺点。利用我们收获的最好的模块，我们成功地演示了在21.2 μT的磁场下，在60 Hz下收获6.32 mW的能量。如果可用磁通密度增加10倍，则收获能量增加100倍。如果在60 Hz、200 μT的公共空间中磁通密度达到可接受水平，则收获功率密度为130 μW/cm3。这个值相当于一个光源的能量收集模块在阴天的值。
The purpose of this study is to demonstrate the energy harvesting of power-line magnetic noise. To the best of the authors' knowledge, no research has yet been carried out to confirm this possibility. In this paper, we present a simple circuit design model, and confirm its validity by experimental results. For small self-sufficient devices in a wireless sensor network, the target energy level is 1 mW. We prepare an energy harvesting module with an air-core coil and resonant capacitor. From experimental and simulated results, we investigate the desired conditions for harvesting 1 mW from a uniform magnetic field of 60 Hz. Through experimental results with iron cores, the benefits and drawbacks of the use of a magnetic core are also discussed. With our best harvested module, we successfully demonstrated the energy harvesting of 6.32 mW from a magnetic field of 21.2 μT at 60 Hz. If the usable magnetic flux density increases tenfold, the harvesting energy increased 100-fold. If the magnetic flux density is at an acceptable level in a public space of 200 μT at 60 Hz, the harvesting power density becomes 130 μW/cm3. This value is comparable to the value of an energy harvesting module of a light source during a cloudy day.