A Bistable Vibration Energy Harvester with Closed Magnetic Circuit
A Bistable Vibration Energy Harvester with Closed Magnetic Circuit
复制标题
具有闭合磁路的双稳态振动能量收集器
DOI：
10.1088/1742-6596/557/1/012081
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Hajime Igarashi
中科院分区：
文献类型：
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作者：
Takahiro Sato;Hajime Igarashi
为了提高双稳态振动能量采集器中电子线圈的磁通量，通过引入轴孔中带有磁芯的两个线圈系统，使磁路闭合。由硅钢和薄气隙组成的磁路的磁阻被抑制得很小。磁体与磁芯之间的弹簧力和非线性磁力共同作用实现了双势垒势。制造了两台磁路开放和闭合的收割机作为对比。结果还表明，闭合磁路能有效地提高输出功率。
In this work, to increase magnetic flux passing through the electric coil in a bistable vibration energy harvester, the magnetic circuit is made closed by introducing two coil systems which have magnetic core in their axis holes. The magnetic resistance of the magnetic circuit, composed of silicon steel and thin air gaps, is supressed to be small. The double well potential is realized from the spring force and nonlinear magnetic force between the magnets and the magnetic core. Two harvesters with opened and closed magnetic circuits are manufactured for comparison. It is also shown that the closed magnetic circuit can effectively improve the output power.