An isolated PoR based pulse generator for TEG energy harvesting with minimum startup of 150 mV and maximum series resistance of 600 Ω

Das, Abhik; Gao, Yuan; Kim, Tony T.

doi:10.1109/asscc.2016.7844194

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…Energy harvesting is a promising alternative to batteries for unattended WSNs nodes. In recent years, different energy harvesting technologies using various ambient energy sources, such as wind energy [1,2], solar energy [3,4], thermal energy [5,6], and vibration energy [7,8] have been explored. This research is focused on thermal energy harvesting, because there are abundant thermal sources in many large industrial sites, and it has been successfully applied in waste heat energy recovery from chimneys [9], car engines [10], and industrial hot walls [11].…”

Section: Introductionmentioning

confidence: 99%

A novel MPPT method for autonomous wireless sensor networks node with thermal energy harvesting

Huang

Chen

2020

Eng. Res. Express

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Energy harvesting is a promising alternative to batteries for autonomous WSN nodes. Although there are various energy harvesting methods using ambient energy sources, this research is focused on thermal energy harvesting because there are abundant thermal sources in industrial sites. As only several mW can be obtained by a thermal energy harvester based on a thermoelectric generator (TEG), improvement of the energy conversion efficiency of the thermal energy harvester is essential. This paper proposes a novel maximum power point tracking (MPPT) method combining coarse adjustment and fine adjustment to enhance the energy conversion efficiency of the harvester. The Direct Adjustment (DA) method for MPPT is adopted in the coarse adjustment stage to avoid disconnecting TEG modules from conversion circuits, while an observation and self-optimization (O&SO) method for MPPT is used in the fine adjustment stage to avoid introducing perturbations and to maintain a stable output power at the maximum power point (MPP). After building up the system simulation model, a series of experiments are conducted to evaluate the proposed MPPT methods. The results show that the DA+O&SO method is an effective MPPT method for a WSN node powered by a TEG. It is able to enhance the regulation speed of the MPPT, improve the continuity of P out , and avoid the power oscillations around the MPP.

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Section: Introductionmentioning

confidence: 99%

A novel MPPT method for autonomous wireless sensor networks node with thermal energy harvesting

Huang

Chen

2020

Eng. Res. Express

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“…The output voltage up to 34.1 mV might not be suitable for conventional complementary metal oxide semiconductor (CMOS) device but applicable to low voltage devices that require ∼150 mV with a few serial connections of the system. 38 Its maximum power output is obtained with a load impedance of 34 Ω, whereas most previous methods of kinetic energy harvesting have had relatively larger impedances of several megaohms. The low impedance of our energy harvester makes it useful for powering portable devices such as wearable devices or IoT systems.…”

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confidence: 99%

“…Hence, it is suitable for harvesting low-frequency kinetic energy from daily activities and could be used in wearable devices or for occasional single-event energy harvesting for IoT systems. The output voltage up to 34.1 mV might not be suitable for conventional complementary metal oxide semiconductor (CMOS) device but applicable to low voltage devices that require ∼150 mV with a few serial connections of the system . Its maximum power output is obtained with a load impedance of 34 Ω, whereas most previous methods of kinetic energy harvesting have had relatively larger impedances of several megaohms.…”

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confidence: 99%

Selective Ion Sweeping on Prussian Blue Analogue Nanoparticles and Activated Carbon for Electrochemical Kinetic Energy Harvesting

et al. 2020

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Kinetic energy is an ideal energy source for powering wearable devices or internet of things (IoTs) because of its abundant availability. Currently, most kinetic energy harvesting systems are based on friction or deformation, which require high-frequency motion or high material durability for sustainable energy harvesting. Here, we introduce selective ion sweeping in a hybrid cell consisting of an ionadsorbing activated carbon and an ion-hosting Prussian blue analogue nanoparticle for electrochemical kinetic energy harvesting. The flow of electrolyte induced by kinetic motion of the cell causes ion sweeping only on the surface of the supercapacitor and induces current flow between the supercapacitor and the battery electrode. This method exhibits 24.9 μW cm −2 as maximum power of system with 34 Ω load in half-cell test, which is several thousand times smaller than the load used in conventional methods. In a long-term test with full cell, this method supplies a continuous current flow ∼6 μA cm −2 at the flow of 40 mL min −1 for 500 cycles without performance decay. The prototype of the hybrid cell demonstrated kinetic energy harvesting from bare hand press with the various flow speeds from 0.41 to 1.39 cm s −1 as well as walking, running, and door closing, which are representative examples of low-frequency kinetic motions in daily life. We believe that the simple structure of the hybrid cell will enable power supply to various applications from miniaturized systems (e.g., IoTs and wearables) to large-scale systems (e.g., ocean wave energy harvesting).

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An isolated PoR based pulse generator for TEG energy harvesting with minimum startup of 150 mV and maximum series resistance of 600 Ω

Cited by 2 publications

References 6 publications

A novel MPPT method for autonomous wireless sensor networks node with thermal energy harvesting

A novel MPPT method for autonomous wireless sensor networks node with thermal energy harvesting

Selective Ion Sweeping on Prussian Blue Analogue Nanoparticles and Activated Carbon for Electrochemical Kinetic Energy Harvesting

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