Rolling mass energy harvester for very low frequency of input vibrations

Electromagnetic energy harvester with repulsively stacked multilayer magnets for low frequency vibrations

This paper investigates the applicability of an electromagnetic generator with repulsively stacked magnets for harvesting energy from traffic induced bridge vibrations. First, the governing equation for electromechanical coupling is presented. The magnetic field for repulsive pole arrangements is discussed and the model is validated from magnet falling test. The detailed design, fabrication, an...

Low-Frequency, Low-G MEMS Piezoelectric Energy Harvester

This paper reports the design, modeling and fabrication of a novel MEMS device for low-frequency, low-g vibration energy harvesting. The new design is based on bi-stable buckled beam structure. To implement the design at MEMS scale, we further proposed to employ residual stress in micro-fabricated thin films. With an electromechanical lumped model, the multi-layer beam could be designed to achi...

MEMS Energy Harvesting from Low-Frequency and Low-Amplitude Vibrations

Vibro-Shock Dynamics Analysis of a Tandem Low Frequency Resonator—High Frequency Piezoelectric Energy Harvester

Frequency up-conversion is a promising technique for energy harvesting in low frequency environments. In this approach, abundantly available environmental motion energy is absorbed by a Low Frequency Resonator (LFR) which transfers it to a high frequency Piezoelectric Vibration Energy Harvester (PVEH) via impact or magnetic coupling. As a result, a decaying alternating output signal is produced...

A Review of MEMS Based Piezoelectric Energy Harvester for Low Frequency Applications

This paper presents a review of MEMS based piezoelectric energy harvesting for low frequency and low power applications. An introduction to MEMS and its components along with the concept of energy harvesting is presented. The paper also presents a device configuration of cantilever based basic components of MEMS energy harvesters, i.e. unimorph, bimorph. Results of different designs for MEMS en...