Electric control of power extracting end-stop for MEMS vibration energy harvesting

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Truong, Binh Duc^1 ; Le, Cuong Phu^1 ; Halvorsen, Einar^1

Department of Micro- and Nanosystem Technology, Buskerud and Vestfold University College, Campus Vestfold, Raveien 215, Borre

3184, Norway^1

关键词: Acceleration amplitude;    Displacement amplitudes;    Electric control;    Improve performance;    Operating condition;    System effectiveness;    Vibration energy harvesters;    Vibration energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012012/pdf
DOI  :  10.1088/1742-6596/557/1/012012

来源: IOP

【 摘 要 】

This experimental work investigates a technique to further improve performance of vibration energy harvesters under displacement-constrained operation. Previously, a device concept based on end-stops acting as additional transducers was developed so that the harvested power can be increased beyond the power obtained from a conventional harvester of the same size. However, there is a range of tested acceleration amplitudes in which the transducing end- stop device performs worse than the conventional device. In this paper, an approach using electric control is used to optimize the end-stop transducer performance and thereby further improve the system effectiveness under displacement constrained operation. For example, the maximum power increases by a factor of 2.4 compared to that of a conventional prototype under the same operating conditions and constrained displacement amplitude, while this value was about 1.3 for the previous technique.