Vibration energy harvesting: from micro to macro scale

Macro and Micro Scale Electromagnetic Kinetic Energy Harvesting Generators

Developments in ultra low power electronics, RF communications and MEMS sensors in wireless sensor networks has led to the requirement for in-situ power supplies capable of harvesting energy from the environment. This paper is concerned with generators that harvest electrical energy from the kinetic energy present in the sensor nodes environment. These generators have the potential to replace o...

Micro-scale Energy Harvesting

A micro electromagnetic generator for vibration energy harvesting

Vibration energy harvesting is receiving a considerable amount of interest as a means for powering wireless sensor nodes. This paper presents a small (component volume 0.1 cm3, practical volume 0.15 cm3) electromagnetic generator utilizing discrete components and optimized for a low ambient vibration level based upon real application data. The generator uses four magnets arranged on an etched c...

Vibration Energy Harvesting with Pzt Thin Film Micro Device

A micro power generator for harvesting vibration energy by means of a piezoelectric laminated cantilever with inertial mass was designed, fabricated, and characterized. The device was micro machined from a silicon-on-insulator structure coated with a 2μm thick piezoelectric PZT thin film. Interdigitated electrodes (IDE) were applied to achieve higher voltages. A piezoelectric coupling constant ...

Electromagnetic energy harvesting from flow induced vibration

A new electromagnetic energy harvester for harnessing energy from flow induced vibration is developed. It converts flow energy into electrical energy by fluid flow and electromagnetic induction. A finite element model for estimation of the generated voltage of the energy harvester is developed. A prototype of the energy harvester is fabricated and tested. Experimental results show that an outpu...