Miniaturized Thermoelectric Power Sources

Fleurial, J. P.; Snyder, G. Jeffrey; Herman, J. A.; Smart, Marshall C.; Shakkottai, P.; Giauque, P. H.; Nicolet, M.‐A.

doi:10.4271/1999-01-2569

Cited by 10 publications

(11 citation statements)

References 13 publications

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“…With these new embedded power source technologies, researchers have turned their focus on renewable power systems for electrical energy storage, which is the impetus for development of ambient energy transducers, also known as energy harvesters, power harvesters, or simply, generators. Researchers such as Sodano et al [1], Glynne-Jones et al [2], Fleurial et al [3], and Raghunathan et al [4] have therefore been driven to explore the available energy present for their power harvesters to utilize, where options range in the form of vibration energy, thermal-gradient energy, solar energy, amongst others. With many of these devices being ultimately integrated into printed circuit board designs, investigators such as Roundy et al [5] and Mateu and Moll [6] have also studied scaling issues with regard to dimensions available for the power harvesting device, its mass constraints, and the minimum power generation required for it to be useful.…”

Section: Introductionmentioning

confidence: 99%

Energy management of multi-component power harvesting systems

2008

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Recent efforts in power harvesting systems have concentrated primarily on the optimization of isolated energy conversion techniques, such as piezoelectric, electromagnetic, solar, or thermal generators, but have focused less on combining different energy transducer types and have placed less emphasis on storing the converted energy for use by other devices. The purpose of this work is to analyze and present an integrated piezoelectric and electromagnetic power harvesting system utilizing existing technology for energy management and storage. Primary emphasis is on the analysis of the combination of existing, or readily obtainable, energy conversion techniques, operating as a single system, and the energy conversion efficiency of the alternating to direct current management, or storage, circuit.

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Section: Introductionmentioning

confidence: 99%

Energy management of multi-component power harvesting systems

2008

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“…Recent advances in low power electronics have reduced the required electrical power for operating the sensors to several microwatts [2]. Hence, the energy generated by harvesting from ambient sources like heat, solar energy, wind, vibration and radio frequency waves can be used to power such devices [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

WE-Harvest: A Wearable Piezoelectric-Electromagnetic Energy Harvester

Hamid¹,

Mohammadi²,

Yuce³

2015

EAI Endorsed Trans IoT

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Wearable electronics require a sustainable electrical power supply to operate. Energy harvesting techniques can be used to convert available nonelectrical energy sources into electrical energy. This paper presents WE-Harvest, a new wearable energy harvesting system that combines the piezoelectric and electromagnetic energy harvesters for wearable devices. Regular human body motions, such as moving the arm, provide the input vibrations. A two-stage modified Dickson multiplier is used to step up the output voltage. The experimental results demonstrate that the combined topology enhances the power transfer efficiency. The dependence of energy harvester output on the load and input frequency has also been investigated.

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“…In the past, thermoelectric modules have been built with relatively large thermocouples and with low specific power densities that limits their use to high temperature difference or low voltage applications. Current research in thermoelectrics at JPL has focused on the development of microgenerators that can maintain relatively high specific power densities even at small temperature differentials [1]. In such a device, the thickness of each thermocouple is on the order of tens of microns.…”

Section: Introductionmentioning

confidence: 99%

“…One particular application that has been suggested in the literature (see [1], [2]) is to use the natural difference between air and soil temperatures and a thermoelectric microgenerator (TEMG) to slowly charge a battery cell at low power. Sensors and communication devices would use the charged battery to operate at high power for a short period, perhaps once a day.…”

Section: Introductionmentioning

confidence: 99%

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A study of heat sink performance in air and soil for use in a thermoelectric energy harvesting device

Lawrence

Snyder

Twenty-First International Conference on Thermoelectrics, 2002. Proceedings ICT '02.

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A suggested application of a thermoelectric generator is to exploit the natural temperature difference between the air and the soil to generate small amounts of electrical energy. Since the conversion efficiency of even the best thermoelectric generators available is very low, the performance of the heat sinks providing the heat flow is critical. By providing a constant heat input to various heat sinks, field tests of their thermal conductances in soil and in air were performed. A prototype device without a thermoelectric generator was constructed, buried, and monitored to experimentally measure the heat flow achievable in such a system. Theoretical considerations for design and selection of improved heat sinks are also presented. In particular, the method of shape factor analysis is used to give rough estimates and upper bounds for the thermal conductance of a passive heat sink buried in soil.

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Miniaturized Thermoelectric Power Sources

Cited by 10 publications

References 13 publications

Energy management of multi-component power harvesting systems

Energy management of multi-component power harvesting systems

WE-Harvest: A Wearable Piezoelectric-Electromagnetic Energy Harvester

A study of heat sink performance in air and soil for use in a thermoelectric energy harvesting device

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