Title :
A new hybrid piezoelectric-electromagnetic micro vibration energy harvester
Author :
Hua Yu ; Jielin Zhou ; Wei Wang
Author_Institution :
Coll. of Optoelectron. Eng., Chongqing Univ., Chongqing, China
Abstract :
The paper presents a new hybrid micro piezoelectric-electromagnetic generator for vibration energy harvesting, which generates energy from low frequency and small amplitude vibration environment, using piezoelectric and electromagnetic conversion mechanisms. The paper outlines factors needed when designing the hybrid energy harvester, including the coupling mathematical model, the finite element analysis, optimization procedure and trade-offs. The proposed hybrid energy harvester is also fabricated and experimental results show that the device can generate an open-circuit voltage of 4.32V and produce a power of 13.47μW with an optimal resistive load of 403KΩ at 0.1 m/s2 acceleration and 105.2 Hz frequency.
Keywords :
electromagnetic coupling; electromagnetic devices; energy harvesting; finite element analysis; microfabrication; optimisation; piezoelectric transducers; vibrations; amplitude vibration environment; electromagnetic conversion mechanism; electromagnetic coupling mathematical model; finite element analysis; frequency 105.2 Hz; hybrid piezoelectric-electromagnetic microvibration energy harvester; open-circuit voltage; optimization procedure; piezoelectric conversion mechanism; power 13.47 muW; resistance 403 kohm; resistive load; voltage 4.32 V; Arrays; Coils; Electromagnetics; Materials; Resistance; MEMS; electromagnetic; micro coils; piezoelectric; vibration energy harvesting;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061103