Novel approach to thermoelectric generator modeling as energy harvesting system

Vlach, Radek

doi:10.1109/mechatronika.2014.7018352

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…Converting heat to electricity is a process based on the thermoelectric effect, which explains that a junction of two dissimilar materials at different temperatures generates electrical energy. The devices that perform this conversion are known as Thermoelectrical Generators (TEGs), and have their base in three physical phenomena: the Seebeck effect is the voltage generated when temperature changes are maintained; the Thomson effect is the heating or cooling process which occurs when a current flows in the direction of a temperature gradient; the Joule effect is the heating of a conductor when an electrical current is present [ 72 , 73 ].…”

Section: Passive Systemsmentioning

confidence: 99%

Challenges in Resource-Constrained IoT Devices: Energy and Communication as Critical Success Factors for Future IoT Deployment

Pereira

Correia

Pinho

et al. 2020

Sensors

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Internet of Things (IoT) has been developing to become a free exchange of useful information between multiple real-world devices. Already spread all over the world in the most varied forms and applications, IoT devices need to overcome a series of challenges to respond to the new requirements and demands. The main focus of this manuscript is to establish good practices for the design of IoT devices (i.e., smart devices) with a focus on two main design challenges: power and connectivity. It groups IoT devices in passive, semi-passive, and active, giving details on multiple research topics. Backscatter communication, Wireless Power Transfer (WPT), Energy Harvesting (EH), chipless devices, Simultaneous Wireless Information and Power Transfer (SWIPT), and Wake-Up Radio (WUR) are some examples of the technologies that will be explored in this work.

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Section: Passive Systemsmentioning

confidence: 99%

Challenges in Resource-Constrained IoT Devices: Energy and Communication as Critical Success Factors for Future IoT Deployment

Pereira

Correia

Pinho

et al. 2020

Sensors

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“…[10] have presented an improved version of the study in [3] including their model with the performance parameters for separate TEG and TEC blocks. Some other studies about using DC-DC converters with TEG and performing variable load conditions for determining TEG characteristics are [11], [12], [13], [14], [15], [16], and [17]. A comparison of some MPPT techniques has been presented in [18].…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Modeling of Thermoelectric Module Using MATLAB/Simulink for Circuit Simulations

2022

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This paper presents a complete model for thermoelectric modules (TEMs) in order to be used in circuit simulations in MATLAB/Simulink software. The purpose of this study is to develop a single block like other circuit elements in the Simulink library by combining both thermoelectric generator (TEG) and thermoelectric cooler (TEC) module parameters and their operations. Since TEG and TEC are both thermoelectric devices, mostly whose main material, such as Bi 2 Te 3 , is the same for similar temperature ranges, a TEG can be operated as TEC and vice versa a TEC can be operated as TEG. In some systems, such as PV-thermoelectric (TE), fuel cell-TE, and battery temperature management of electric vehicles, the modules can be used in both modes. Also, in some cases of these systems, sometimes the TEM may need to be operated as a generator, and sometimes as a cooler. The bidirectional operation of the TEM is a costsaving approach since the 2 types of TEMs are not needed to be installed together. This paper proposes a novel model whereas the studies up to date in the literature have not been fully compatible with the bidirectional usage of the modules. The proposed model deals with the polarities of both the thermal and the electrical ports of the TEM in order to decide the mode of operation, that is TEG or TEC. Maximum parameters and performance parameters for both TEG and TEC operations are included in the module block so as to observe and control the device for desired operating conditions. It is seen that the simulations with the temperature-dependent parameters have given very close results to the graphics of the datasheet. However, simulations in which the Thomson heat isn"t ignored have more deviations compared to the datasheet. Moreover, the simulations with the constant material properties have given better results than the Thomson heat included ones in the cases of the higher ∆T levels. While ∆T is 10 °K, COP max without the Thomson heat has been found as 3.399 which is the same as the datasheet. Meanwhile, COP max with the Thomson heat has been found as 3.7147, and COP max with the constant properties has been found as 3.8057. However; while ∆T is 50 °K, COP max is 0.247 without the Thomson heat which is the same as the datasheet, but COP max is 0.341 with the Thomson heat, and COP max is 0.268 with constant material properties. In addition, it is shown that, under variable polarities of thermal and electrical ports, bidirectional operation of the TEM is successfully achieved and the TEM is operated as both TEG and TEC in the same simulation.

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“…Simscape has both fundamental thermal and electrical elements. A physical TEG model together with DC/DC converter circuit can be built up based on the physical connections of thermal and electrical elements [12]. A Simscape TEG model can run directly within Simullink model frame.…”

Section: Introductionmentioning

confidence: 99%