Energy neutral sensor system with micro-scale photovoltaic and thermoelectric energy harvesting
Energy neutral sensor system with micro-scale photovoltaic and thermoelectric energy harvesting
Minimizing power conversion losses is critical for energy neutral operation of micro-scale energy harvested sensor nodes. These small form-factor sensor nodes rely on miniature harvesters with low output voltages that must be boosted with large conversion ratios to recharge batteries or super-capacitors. Selective Direct Operation (SDO), a technique to selectively avoid power conversion and thereby eliminate conversion loss in energy harvested systems has been demonstrated as an effective technique for light harvesters. This paper extends SDO to thermoelectric generators (TEGs). SDO exploits the ultra-low circuit functional voltages, enabling sensor systems to effectively harvest energy from cm-scale TEGs which output few 10's of mW but at low output voltages (100's of mV). PV cell construction from prior-work, TEG characterization and field measurements are presented in this paper to demonstrate the effectiveness of SDO and co-designing energy harvesters, power conversion circuits and digital sub-systems.
Savanth, Parameshwarappa Anand, Kumar
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Bellanger, Mathieu
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Weddell, Alexander
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Myers, James
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Kauer, Mathias
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Savanth, Parameshwarappa Anand, Kumar
57b60ac8-bbb6-4517-9d5e-668d82500190
Bellanger, Mathieu
0f12df1d-132e-4e83-9b5b-572c80e35b52
Weddell, Alexander
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Myers, James
b541d1fd-a24a-4771-91b3-84e1ac8c7fe5
Kauer, Mathias
f2304751-eac4-4103-93ac-3a4ff64aa153
Savanth, Parameshwarappa Anand, Kumar, Bellanger, Mathieu, Weddell, Alexander, Myers, James and Kauer, Mathias
(2018)
Energy neutral sensor system with micro-scale photovoltaic and thermoelectric energy harvesting.
In Journal of Physics.
Institute of Physics.
3 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Minimizing power conversion losses is critical for energy neutral operation of micro-scale energy harvested sensor nodes. These small form-factor sensor nodes rely on miniature harvesters with low output voltages that must be boosted with large conversion ratios to recharge batteries or super-capacitors. Selective Direct Operation (SDO), a technique to selectively avoid power conversion and thereby eliminate conversion loss in energy harvested systems has been demonstrated as an effective technique for light harvesters. This paper extends SDO to thermoelectric generators (TEGs). SDO exploits the ultra-low circuit functional voltages, enabling sensor systems to effectively harvest energy from cm-scale TEGs which output few 10's of mW but at low output voltages (100's of mV). PV cell construction from prior-work, TEG characterization and field measurements are presented in this paper to demonstrate the effectiveness of SDO and co-designing energy harvesters, power conversion circuits and digital sub-systems.
Text
PMEMS17
- Accepted Manuscript
More information
Accepted/In Press date: 31 August 2017
e-pub ahead of print date: 26 July 2018
Venue - Dates:
Power MEMS 2017: The 17th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, Kanazawa Bunka Hall, Kanazawa, Japan, 2017-11-14 - 2017-11-17
Identifiers
Local EPrints ID: 415324
URI: http://eprints.soton.ac.uk/id/eprint/415324
PURE UUID: 3e53c60a-07e7-4f74-85ce-7b97c218c484
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Date deposited: 07 Nov 2017 17:30
Last modified: 16 Mar 2024 05:53
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Contributors
Author:
Parameshwarappa Anand, Kumar Savanth
Author:
Mathieu Bellanger
Author:
Alexander Weddell
Author:
James Myers
Author:
Mathias Kauer
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