Title: Efficiently harvesting energy from temperature differences in order to power wireless systems
Authors : Meli, Marcel
Dillersberger, Harald
Conference details: Wireless Congress: Systems & Applications, Munich, November 14–15, 2014
Issue Date: Nov-2014
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : Low power; Booster; TEG; Energy harvesting
Subject (DDC) : 004: Computer science
333.7: Land, recreational areas and energy
Abstract: Devices that generate electrical energy from a temperature difference are often used to provide energy autonomy. Since they normally deliver small voltages, the use of a step-up converter is required to get to the needed voltage for the electronics. Several such boosters exist on the market. In the practice, it is often difficult to provide enough energy when the temperature differences are small. It is well known that the impedance of the harvester can strongly influence the performance of the booster and therefore have an impact on the cost of the harvesting system. In this work, we present a booster architecture that allows a good impedance matching for existing TEG harvesters. The amount of energy harvested for a small temperature difference is high enough to allow the efficient use of small commercial TEGs. We show how the booster and associated power management system can be combined with very low power electronic to power loads such as sensors that communicate using Ble or other wireless protocols.
Departement: School of Engineering
Organisational Unit: Institute of Embedded Systems (InES)
Publication type: Conference Other
URI: https://digitalcollection.zhaw.ch/handle/11475/7145
Appears in Collections:Publikationen School of Engineering

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