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Improving the efficiency of air-flow energy harvesters combining active and passive rectifiers

Authors:

Danilo Porcarelli,

Davide Brunelli,

Luca BeniniAuthors Info & Claims

ENSSys '13: Proceedings of the 1st International Workshop on Energy Neutral Sensing Systems

Article No.: 6, Pages 1 - 6

https://doi.org/10.1145/2534208.2534209

Published: 13 November 2013 Publication History

Abstract

The architecture of air-flow energy harvesters generally consists of a first rectifying stage followed by a DC-DC regulator to convert and to store the incoming energy. This paper presents a circuit designed to improve the efficiency of the rectifying stage combining a MOSFET-based active rectifier in parallel with a passive full-wave bridge. Such system exploits the low forward voltage of the Schottky diodes to compensate the drawback of the inefficient passive rectification due to the bulk diodes of the MOSFETs when the power generated by low air-flow speed is not sufficient to activate the control circuitry of the active rectifier. The hybrid rectifier concept was firstly analyzed by SPICE simulations and next validated by means of experiments. Results show a conversion efficiency improvement between 10% and 30%. Moreover an energy harvester equipped with the hybrid rectifier shows an increase of the collected energy from 7% to 11% with respect to a scavenger using the active topology.

References

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Cited By

Brunelli D(2016)A High-Efficiency Wind Energy Harvester for Autonomous Embedded SystemsSensors10.3390/s1603032716:3(327)Online publication date: 4-Mar-2016
https://doi.org/10.3390/s16030327
Ju QZhang YMerrett G(2014)Reducing charge redistribution loss for supercapacitor-operated energy harvesting wireless sensor nodesProceedings of the 2nd International Workshop on Energy Neutral Sensing Systems10.1145/2675683.2675691(31-36)Online publication date: 6-Nov-2014
https://dl.acm.org/doi/10.1145/2675683.2675691
Porcarelli DBrunelli DBenini L(2014)Clamp-and-ForgetMicroelectronics Journal10.1016/j.mejo.2014.05.01945:12(1671-1678)Online publication date: 1-Dec-2014
https://dl.acm.org/doi/10.1016/j.mejo.2014.05.019

Index Terms

Improving the efficiency of air-flow energy harvesters combining active and passive rectifiers
1. General and reference
  1. Cross-computing tools and techniques
    1. Design
2. Hardware

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Information

Published In

cover image ACM Conferences

ENSSys '13: Proceedings of the 1st International Workshop on Energy Neutral Sensing Systems

November 2013

94 pages

ISBN:9781450324328

DOI:10.1145/2534208

General Chairs:
Geoff V Merrett
Uni. Southampton, UK
,
Davide Brunelli
Uni. Trento, Italy

Copyright © 2013 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 13 November 2013

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Seventh Framework Programme

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SenSys '13

Sponsor:

SenSys '13: The 11th ACM Conference on Embedded Network Sensor Systems

November 13, 2013

Italy, Rome

Acceptance Rates

ENSSys '13 Paper Acceptance Rate 12 of 20 submissions, 60%;

Overall Acceptance Rate 21 of 29 submissions, 72%

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Cited By

Brunelli D(2016)A High-Efficiency Wind Energy Harvester for Autonomous Embedded SystemsSensors10.3390/s1603032716:3(327)Online publication date: 4-Mar-2016
https://doi.org/10.3390/s16030327
Ju QZhang YMerrett G(2014)Reducing charge redistribution loss for supercapacitor-operated energy harvesting wireless sensor nodesProceedings of the 2nd International Workshop on Energy Neutral Sensing Systems10.1145/2675683.2675691(31-36)Online publication date: 6-Nov-2014
https://dl.acm.org/doi/10.1145/2675683.2675691
Porcarelli DBrunelli DBenini L(2014)Clamp-and-ForgetMicroelectronics Journal10.1016/j.mejo.2014.05.01945:12(1671-1678)Online publication date: 1-Dec-2014
https://dl.acm.org/doi/10.1016/j.mejo.2014.05.019

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