A high efficiency cascaded thermoelectric generation system with power balancing mechanism

Due to the low energy conversion efficiency of thermoelectric generation (TEG) devices, it is a key issue to improve the overall efficiency of the TEG system. In this paper, a cascaded TEG system is developed, which includes the cascaded architecture and the power balancing mechanism. In the system...

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Bibliographic Details
Main Authors: Qiu, Zhaoxin, Sun, Kai, Wu, Hongfei, Huang, Jun, Xing, Yan
Format: Conference Proceeding
Language:English
Subjects:
cascaded
Maximum power point trackers
maximum power point tracking
power balancing
Process control
Resistance
Temperature
thermoelectric generation system
Topology
Voltage control
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Summary:Due to the low energy conversion efficiency of thermoelectric generation (TEG) devices, it is a key issue to improve the overall efficiency of the TEG system. In this paper, a cascaded TEG system is developed, which includes the cascaded architecture and the power balancing mechanism. In the system architecture, distributed buck-boost converters are mounted between the TEG modules to achieve maximum power point tracking (MPPT) for each TEG module with the power balancing strategy and a central boost-buck converter is used to supply the load. Although the distributed buck-boost converters and the central DC-DC converter have some power losses, the output power of the TEG system can be enhanced obviously due to the MPPT of all TEG modules. Experimental results verify the practical feasibility and effectiveness of the developed system.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2015.7104418