A Vibration-Based Electromagnetic Energy Harvester Using Mechanical Frequency Up-Conversion Method
By O. Zorlu, Emre Tan Topal, Haluk Kulah. IEEE Sensors Journal, 2011
208 citations recorded by the source corpus.
This paper presents a new vibration-based electromagnetic energy harvester using a mechanical frequency up-conversion method for harvesting energy from external low-frequency vibrations within a range of 1-10 Hz. The structure consists of a magnet placed on a diaphragm, a polystyrene cantilever carrying a pick-up coil, and a mechanical barrier which converts low-frequency vibrations to a higher frequency, hence increasing the efficiency of the system. The tested structure proved to generate 88.6 mV and 544.7 μW rms power output by up-converting 10-Hz external vibration to 394 Hz. The obtained power density is 184 μW/cm3, with a device volume of 2.96 cm3. An analytical model is developed to analyze the behavior of the energy harvester prototypes with various dimensions. The model predicts the performance parameters of the structures within 5% error range. The effect of scaling down the device dimensions is investigated through the developed model and fabricated prototypes. It is shown that the power density of the energy harvester is increased as its dimensions are scaled down, proving that the proposed structure is a good candidate to be used in low-power wireless microsystems operating at low-frequency vibrations.
Subfields: Electrical and Electronic Engineering, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/49434727918c1c741c6de6887e05f9a7b9e9bee5
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Citations in the corpus
- Investigation of a MEMS piezoelectric energy harvester system with a frequency-widened-bandwidth mechanism introduced by mechanical stoppers (2012, unknown): “Zorlu et al [22] demonstrated a novel FUC method eliminating the use of an extra magnetic mechanism.”
- A spring-based resonance coupling for hugely enhancing the performance of triboelectric nanogenerators for harvesting low-frequency vibration energy (2017, background): “With regards to mechanical energy harvesting, various types of frequency upscalers have been adopted and demonstrated to improve the performance of EMG or piezoelectric generators operating at a frequency lower than their resonating frequency [24-26].”