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 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.

[1]  Rae-Young Kim,et al.  Analysis and Design of Maximum Power Point Tracking Scheme for Thermoelectric Battery Energy Storage System , 2009, IEEE Transactions on Industrial Electronics.

[2]  Wu,et al.  Distributed High Efficiency Renewable Power Systems With Modules in Series Connection , 2013 .

[3]  Wang Wen,et al.  Development of Polythiophene and Its Derivatives as Thermoelectric Materials , 2012 .

[4]  H. Nagayoshi,et al.  Evaluation of multi MPPT thermoelectric generator system , 2007, 2007 26th International Conference on Thermoelectrics.

[5]  Bangyin Liu,et al.  Design considerations and topology selection for dc-module-based building integrated photovoltaic system , 2008, 2008 3rd IEEE Conference on Industrial Electronics and Applications.

[6]  G. J. Snyder,et al.  Complex thermoelectric materials. , 2008, Nature materials.

[7]  Chen Guocheng.  High Efficiency High Step-up Boost-Flyback DC/DC Converter , 2011 .

[8]  V.G. Agelidis,et al.  Comparative study of maximum power point tracking algorithms for thermoelectric generators , 2008, 2008 Australasian Universities Power Engineering Conference.

[9]  F. Blaabjerg,et al.  A review of single-phase grid-connected inverters for photovoltaic modules , 2005, IEEE Transactions on Industry Applications.

[10]  Wei-Chin Chang,et al.  A mathematic model of thermoelectric module with applications on waste heat recovery from automobile engine , 2010 .

[11]  Nyambayar Baatar,et al.  A Digital Coreless Maximum Power Point Tracking Circuit for Thermoelectric Generators , 2011 .

[12]  Pradeep Samuel Shenoy,et al.  Improving performance, efficiency, and reliability of DC-DC conversion systems by differential power processing , 2012 .

[13]  Quanlin Liu,et al.  Phase stability, crystal structure and thermoelectric properties of Cu doped AgSbTe2 , 2012 .

[14]  Kai Sun,et al.  Hybrid centralized-distributed power conditioning system for thermoelectric generator with high energy efficiency , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[15]  Duan Shanxu.  Research on Topology of DC-module-based Building Integrated Photovoltaic System , 2008 .

[16]  Vladimir Leonov,et al.  Thermoelectric Energy Harvesting of Human Body Heat for Wearable Sensors , 2013, IEEE Sensors Journal.

[17]  F.Z. Peng,et al.  Modeling and power conditioning for thermoelectric generation , 2008, 2008 IEEE Power Electronics Specialists Conference.

[18]  H. Nagayoshi,et al.  Comparison of maximum power point control methods for thermoelectric power generator , 2002, Twenty-First International Conference on Thermoelectrics, 2002. Proceedings ICT '02..

[19]  Cai Tao.  Coordinate Control of DC-module-based Building Integrated Photovoltaic System , 2009 .

[20]  Xiaolong Gou,et al.  Modeling, experimental study and optimization on low-temperature waste heat thermoelectric generator system , 2010 .

[21]  Fred C. Lee,et al.  High-efficiency, high step-up DC-DC converters , 2003 .

[22]  Zhe Chen,et al.  A high efficiency step-up DC-DC converter for thermoelectric generator with wide input voltage range , 2012, 2012 IEEE International Symposium on Industrial Electronics.

[23]  Lasse Rosendahl,et al.  Experimental Study of a Thermoelectric Generation System , 2011 .

[24]  P. T. Krein,et al.  Differential power processing architecture for increased energy production and reliability of photovoltaic systems , 2012, 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[25]  Yehui Han,et al.  PV balancers: Concept, architectures, and realization , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[26]  L. Bell.  Cooling, Heating, Generating Power, and Recovering Waste Heat with Thermoelectric Systems , 2008, Science.

[27]  Jih-Sheng Lai,et al.  Aggregated modeling and control of a boost-buck cascade converter for maximum power point tracking of a thermoelectric generator , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[28]  Kai Sun,et al.  A power conditioning system for thermoelectric generator based on interleaved Boost converter with MPPT control , 2011, 2011 International Conference on Electrical Machines and Systems.