Configuration of segmented leg for the enhanced performance of segmented thermoelectric generator

Ali, Haider; Yilbaş, Bekir Sami

doi:10.1002/er.3620

Cited by 35 publications

(16 citation statements)

References 27 publications

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“…The advantages of WHR include a decrease in the consumption costs, equipment sizes, pollution, and auxiliary energy consumption. Though a lot of WHR systems are available, the thermoelectric generator (TEG) is a green energy source and a promising energy harvesting device, which is widely used in automotive, military, and battery charging applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the double input power converter with N stages of voltage multiplier using PSO‐based MPPT technique for the thermoelectric energy harvesting system

Thankakan¹,

Nadar²

2020

Circuit Theory & Apps

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Summary This research work presents a thermoelectric energy harvesting system comprises of a double input DC‐DC converter with maximum power point tracking (MPPT) technique under varying temperature conditions (VTCs). The converter has two inputs with N stages of diode‐capacitor to boost the output voltage. It has the advantages of higher voltage gain and flexibility of power‐sharing by both the independent sources. The perturb and observe (P&O)‐based MPPT algorithm is an efficient and simple method to track the maximum power. However, the power‐current (P‐I) characteristics of the thermoelectric modules exhibit multiple peaks at VTCs; it fails to identify the global peak point (GPP) and gets track the local peak point. To overcome the drawback of the P&O technique, a particle swarm optimization (PSO)‐based MPPT technique is implemented to track the GPP. A comparison is performed between the P&O and PSO technique in terms of MPPT tracking efficiency and oscillation around the maximum power point. From the acquired results of simulation and experiment, it is recommended that the PSO‐based MPPT technique has furnished better overall performance.

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Section: Introductionmentioning

confidence: 99%

Investigation of the double input power converter with N stages of voltage multiplier using PSO‐based MPPT technique for the thermoelectric energy harvesting system

Thankakan¹,

Nadar²

2020

Circuit Theory & Apps

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“…Thermoelectric generators (TEGs) are potential alternative green energy sources [1][2][3][4] which are growing popularly to overcome the issues of environmental pollution and global energy crisis. Thermoelectric generators (TEGs) are potential alternative green energy sources [1][2][3][4] which are growing popularly to overcome the issues of environmental pollution and global energy crisis.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, the rapid development and the increasing energy demand for comfort require the development of more alternative energy sources. Thermoelectric generators (TEGs) are potential alternative green energy sources [1][2][3][4] which are growing popularly to overcome the issues of environmental pollution and global energy crisis.…”

Section: Introductionmentioning

confidence: 99%

Investigation of thermoelectric generators connected in different configurations for micro-grid applications

Thankakan¹,

Nadar²

2018

Int J Energy Res

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Summary This research work investigates the power‐current (P‐I) and voltage‐current (V‐I) characteristics of the thermoelectric modules (TEMs) in series‐parallel configurations under homogeneous and heterogeneous temperature difference (ΔT) condition. To study its performance, 5 different series‐parallel combinations were formed using 16 TEMs. The comparisons among the different configurations have been done to determine the optimal series‐parallel configuration. The total load power extracted from 16 individually connected TEMs was 18.2 W, which was placed as a reference load power. The optimal series‐parallel combination for maximizing the load power is square series‐parallel configuration, whose maximum load power is 95.5%, compared to the reference load power. Moreover, in square series‐parallel configuration, the total internal resistance value that remains constant is equal to the internal resistance of a single TEM, and the total open‐circuit voltage increases gradually on adding any number of TEMs. Thus, it produces higher load voltage and higher load current simultaneously, which is recommended to power DC micro‐grid applications. Furthermore, the series, parallel, and square series‐parallel configurations are connected as star to obtain 3 separate DC output to power the same application. The performance of TEMs under various configurations is analyzed, and the obtain results are verified experimentally.

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“…Sahin and Yilbas analysed the performance of thermoelectric generator and influence of thermoelectric geometry on the device performance theoretically and concluded that the shape parameter of the device has favourable effect on efficiency and reverse effect on the power output. Ali and Yilbas carried out the thermal analysis of the segmented thermoelectric generator and compared the power output and efficiency of segmented TEG with the conventional configuration having single material for the same operating conditions. Kaushik and Manikandan determined the energy and exergy efficiency of annular thermoelectric generator by taking Thomson effect into account.…”

Section: Introductionmentioning

confidence: 99%

Geometric optimization of trapezoidal thermoelectric heat pump considering contact resistances through genetic algorithm

2017

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Summary An alternate option for improving the performance of the thermoelectric heat pump (TEHP) is the variation in thermoelectric leg configuration. In this paper, the thermodynamic model based on first and second law of thermodynamics for an exoreversible TEHP including influence of Thomson effect as well as leg geometry on the coefficient of performance and heating load of the device has been developed and optimized. Modified expressions have been derived analytically for dimensionless heating load, irreversibilities, figure of merit, energy, and exergy efficiency. The effects of operating and geometry parameters such as shape parameter (Ac/Ah), temperature ratio (Tc/Th), Thomson effect, thermal and electrical contact resistances on the coefficient of performance, and heating load of the TEHP have been analysed. The results indicate that the Thomson effect has adverse effect on heating load of the system. The optimal parameters obtained through GA optimization process have been compared with the optimal parameters obtained through analytical method which proved the validity of GA optimization method for optimization of TEHP. After the testing, the GA optimization has been performed to determine the optimum parameters corresponding to maximum energy efficiency and maximum heating load. It was found that the GA population converges quickly after 20 runs only which proved the GA as time and cost‐effective optimization tool. This study will be useful for designing of practical TEHP systems of different leg geometries.

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Configuration of segmented leg for the enhanced performance of segmented thermoelectric generator

Cited by 35 publications

References 27 publications

Investigation of the double input power converter with N stages of voltage multiplier using PSO‐based MPPT technique for the thermoelectric energy harvesting system

Investigation of the double input power converter with N stages of voltage multiplier using PSO‐based MPPT technique for the thermoelectric energy harvesting system

Investigation of thermoelectric generators connected in different configurations for micro-grid applications

Geometric optimization of trapezoidal thermoelectric heat pump considering contact resistances through genetic algorithm

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