Component-Oriented Modeling of Thermoelectric Devices for Energy System Design

Felgner, Felix; Exel, Lukas; Nesarajah, Marco; Frey, Georg

doi:10.1109/tie.2013.2261037

Cited by 57 publications

(13 citation statements)

References 35 publications

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“…There are some studies about a human sensation analysis focused on evaluating a thermal sensation using multiple Peltier devices (11) (12) . Human spatial and temporal resolution of the thermal sensations are changed depending on the situation.…”

Section: Intoroductionmentioning

confidence: 99%

Variable Heat Disturbance Observer for Control of Peltier Device

Osawa

Katsura

2019

IEEJ Journal IA

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A thermoelectric device called a Peltier device is widely used in many fields. For example, the device is used for a cooling system such as in systems consisting of medical reagent coolants and refrigerators. However, controlling the device is difficult because thermal characteristics of the device change depending on its temperature. Notably, the amount of heat flow generated from the device varies with the amount of current applied. Therefore, a thermal nonlinear behavior has to be considered in a thermal model. Most studies do not consider the nonlinear characteristics and treat the device as a linear system. Therefore, robustness against disturbance is not high because of modeling error. This paper presents a heat disturbance observer considering the nonlinear characteristics of a Peltier device. Variable parameters depending on the temperature and current of the device are used, and a variable heat disturbance observer is proposed. The thermal model used in the proposed observer includes a few nonlinear elements such as Joule heat and heat flow inside the device. The objective of this study is to improve the response of a Peltier device. Some experiments were conducted to verify the validity of the proposed method. Besides, the effect of modeling error on the stability of the observer is discussed.

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Section: Intoroductionmentioning

confidence: 99%

Variable Heat Disturbance Observer for Control of Peltier Device

Osawa

Katsura

2019

IEEJ Journal IA

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“…To simulate thermoelectric EHSs, a Modelica library called EHSTEG (Energy Harvesting Systems based on Thermoelectric Generators) was developed and applied; more information about the modeling of TEGs can be found in [27,28]. With this library, a complete system can be reproduced and this is also done for the heating mockup with the attached EHS (see Figure 8).…”

Section: Simulation Modelmentioning

confidence: 99%

Optimized Design of Thermoelectric Energy Harvesting Systems for Waste Heat Recovery from Exhaust Pipes

Nesarajah

Frey

2017

Applied Sciences

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Abstract:With the increasing interest in energy efficiency and resource protection, waste heat recovery processes have gained importance. Thereby, one possibility is the conversion of the heat energy into electrical energy by thermoelectric generators. Here, a thermoelectric energy harvesting system is developed to convert the waste heat from exhaust pipes, which are very often used to transport the heat, e.g., in automobiles, in industrial facilities or in heating systems. That is why a mockup of a heating is built-up, and the developed energy harvesting system is attached. To build-up this system, a model-based development process is used. The setup of the developed energy harvesting system is very flexible to test different variants and an optimized system can be found in order to increase the energy yield for concrete application examples. A corresponding simulation model is also presented, based on previously developed libraries in Modelica ® /Dymola ® . In the end, it can be shown-with measurement and simulation results-that a thermoelectric energy harvesting system on the exhaust pipe of a heating system delivers extra energy and thus delivers a contribution for a more efficient usage of the inserted primary energy carrier.

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“…Utilizing the Seebeck and Peltier effects, a full relationship between heat energy traveling across a junction of differing conductive materials and the potential voltage across that same junction can be modeled [9], [10]. At the junction of a Ptype and an N-type semiconductor, a potential differential in the form of excess charges builds along the interface of the junction.…”

Section: A Operational Principlesmentioning

confidence: 99%

Current-Sensorless Power Estimation and MPPT Implementation for Thermoelectric Generators

Bond

Park

2015

IEEE Trans. Ind. Electron.

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Presented is a duty-cycle-based maximum power point tracking (MPPT) scheme with current-sensorless power estimation. Conventional MPPT methods require generated power data involving direct current measurement, or disconnection of source and load for open circuit voltage measurement. The proposed scheme avoids these disadvantages while retaining MPPT capability. This microcontroller-based approach allows for easy implementation and tuning of the MPPT algorithm to suit the characteristics of the thermoelectric generator (TEG) with respect to environmental conditions. The hysteresis voltage regulator maintains the TEG output voltage at a reference level, so that the maximum power can be extracted for the given temperature condition. The proposed MPPT energy harvesting scheme is simple and inexpensive, has a low power consumption, and can be used with various types of generators. The proposed system has been validated analytically and experimentally.Index Terms-Thermoelectric energy conversion, Maximum power point tracking (MPPT), Current sensorless, Energy Management.

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Component-Oriented Modeling of Thermoelectric Devices for Energy System Design

Cited by 57 publications

References 35 publications

Variable Heat Disturbance Observer for Control of Peltier Device

Variable Heat Disturbance Observer for Control of Peltier Device

Optimized Design of Thermoelectric Energy Harvesting Systems for Waste Heat Recovery from Exhaust Pipes

Current-Sensorless Power Estimation and MPPT Implementation for Thermoelectric Generators

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