Model and Experimental Study of Permanent Magnet Vibration-to-Electrical Power Generator
Model and Experimental Study of Permanent Magnet Vibration-to-Electrical Power Generator
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DOI：
10.1109/tasc.2010.2040072
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发表时间：
2010-02
影响因子：
1.8
通讯作者：
Zhihua Wang;Bowen Wang;Minwei Wang;Huijuan Zhang;Weiping Huang
中科院分区：
文献类型：
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作者：
Zhihua Wang;Bowen Wang;Minwei Wang;Huijuan Zhang;Weiping Huang
振动能量广泛存在，但往往被浪费掉.将动能转换成电能的能量收集装置已经吸引了很多兴趣。正在研究各种振动驱动发电机，其使用电磁原理将动能转换成电能，用于为传感器供电。然而，电源一直是制约手持电子设备和其他小功率电器发展的瓶颈问题。本文设计了一种振动发电机，并利用有限元法分析了其磁场分布。然后，根据振动方程和电磁感应定律，建立了发电机的输入输出模型。计算结果表明，发电机的输出电压与振动源的振幅、频率和波形有关。制作了发电机样机，并在开路和不同负载（如电阻、电感和电容）下进行了测试。实验结果与计算结果的比较表明，该模型能较好地描述振动发电机的输入输出关系。
The vibration energy exists widely and is always wasted. Energy harvesting devices that convert kinetic energy into electrical energy have attracted much interest. A variety of vibration driven generators using electromagnetic principles to convert the kinetic energy into electrical energy, are being studied for powering sensors. However, the power supply is always a bottleneck problem to the development of handheld electronic equipments and some other low power electrical apparatus. In this paper, the vibration-to-electrical power generator has been designed and its magnetic field distribution has been analyzed by using Finite Element method (FEM). Then, the input-output model of the generator is built on the basis of vibration equation and law of electromagnetic induction. The calculation result has shown that output voltage of the generator depends on the amplitude, frequency and waveform of a vibration source. A generator prototype has been fabricated and tested at open-circuit and different loads, such as resistances, inductances and capacitances. The comparison of experimental result with calculating one has shown that the model can describe the input-output relation of the vibration-to-electrical power generator.