PROJECT TITLE :
Investigation of the Nonlinear Electromagnetic Energy Harvesters From Hand Shaking
This paper presents the design, modeling, and optimization of an electromagnetic energy harvesting (EMEH) device with numerous tube length and winding coil width. The nonlinear magnetic-spring configuration is utilized for generating sufficient power from hand shaking of irregular and low-frequency vibrations. Based on the modeling and simulation, longer tube length of the EMEH device leads to lower resonant frequency and stronger nonlinearity of the system and so is a lot of economical for low-frequency harvesting. From the hand shaking check, it is found that a longer tube length and a shorter winding coil width could induce a better power generation. The optimized device of tube length of 66 mm and winding coil width of 10 mm has achieved most power outputs of 568.sixty six μW at the hand shaking acceleration of 1 g and frequency of six.seven Hz, that corresponds to the ability density of ninety.67 μW/cm3. More improvement of the device has been achieved by increasing the coil length to forty m. This device provides maximum power outputs of 825.36 μW at the hand shaking acceleration of 1.fifty six g and frequency of vi.seven Hz. This paper demonstrates a possible design of nonlinear EMEH device with spectacular output performance from hand shaking.
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