Vibration energy scavenging and management for ultra low power applications

Authors:
Lu Chao;Chi Ying Tsui;Wing Hung Ki
Affiliations:
Hong Kong University of Science and Technology;Hong Kong University of Science and Technology;Hong Kong University of Science and Technology
Venue:
ISLPED '07 Proceedings of the 2007 international symposium on Low power electronics and design
Year:
2007

Citing 2
Cited 3

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Abstract

In this work, the design of a mechanical vibration energy scavenging and management system is presented for ultra low power applications. A new maximum power point tracking (MPPT) scheme is proposed for piezoelectric conversion. This scheme consumes very little power and is especially suitable for ultra low power energy harvesting applications. This design is capable of self-starting and self-powered, thus eliminates external battery integration and significantly reduces the system volume. System modeling, analysis, and VLSI implementation were developed. Various simulations were carried out and the simulation results show that the proposed MPPT scheme can achieve an energy harvesting efficiency higher than 90%.