A high-efficiency hybrid energy system composed of fuel cell and thermoelectric generator for light electric vehicles

Öz

This study proposes a more effective utilization of fuel cell (FC) technology by integrating a thermoelectric generator (TEG), which harnesses waste heat to generate electrical energy. While the FC still requires hydrogen, the integration of a TEG enables supplementary power generation from waste heat without any additional fuel input, resulting in a more efficient and compact hybrid system. The Perturb and Observe (P&O) MPPT-based SEPIC converter is highlighted for use in light fuel cell electric vehicle (FCEV) applications due to its inherent buck–boost capability, making it particularly suitable for practical implementations. To achieve maximum efficiency and ensure stable operation of the TEG, the FC is operated at its nominal power of 93.75 W in this system. The integrated TEG system, combined with a high-efficiency boost converter, contributes approximately 5-W to the proposed hybrid energy system, which achieves an overall efficiency of 96.1%. The proposed hybrid energy system holds great potential for providing sustainable energy solutions in transportation applications.

Anahtar Kelimeler

• Fuel cell
• Thermoelectric generator
• Hybrid energy system
• Electric vehicle

Kaynakça

1. [1] Ağca S. Correlation between silver alloying, post-deposition treatment, and photovoltaic parameters in chalcopyrite thin film solar cells produced at low temperature. International Journal of Energy Studies 2024; 7513: 369–380.
2. [2] Bulbul S, Ertugrul G, Arli F. Investigation of usage potentials of global energy systems. International Advanced Researches and Engineering Journal 2018; 2: 58–67.
3. [3] Erdinç O, Sahin H, Sefa M, Tunay M. Fuel cell and battery powered light electric vehicle simulation. International Journal of Hydrogen Energy 2024; 12: 499.
4. [4] İnci M, Büyük M, Demir M. H, İlbey G. A review and research on fuel cell electric vehicles: Topologies, power electronic converters, energy management methods, technical challenges, marketing and future aspects. Renewable Sustainable Energy Reviews 2021; 137: 110648.
5. [5] Oksuztepe E, Yildirim M. PEM fuel cell and supercapacitor hybrid power system for four in-wheel switched reluctance motors drive EV using geographic information system. International Journal of Hydrogen Energy 2023; 75: 74–87.
6. [6] Okundamiya M. S. Size optimization of a hybrid photovoltaic/fuel cell grid connected power system including hydrogen storage. International Journal of Hydrogen Energy 2021; 46: 30539–30546.
7. [7] Jin J. X, Chen X. Y, Wen L, Wang S. C, Xin Y. Cryogenic power conversion for SMES application in a liquid hydrogen powered fuel cell electric vehicle. IEEE Transactions on Applied Superconductivity 2015; 25: 1–11.
8. [8] Caglayan R. Z. TEG & Fuel Cell Hybrid System with Sliding Mode Control based MPPT. 12th International Conference on Renewable Energy Research and Applications (ICRERA), Vienna-Austria, 2023.

9. [9] Hajji M, Alem H. El, Labrim H, Benyoussef A, Benchrifa R, Mounkachi O. Dynamic modeling and analysis of PV-Wind/Fuel Cell/TEG hybrid system including metal hydride tank for hydrogen upgrading. Energy 2025; 324: 135999.
10. [10] Mekhilef S, Saidur R, Safari A. Comparative study of different fuel cell technologies. Renewable and Sustainable Energy Reviews 2012; 16: 981–989, 2012.
11. [11] Büyük M, Savrun M. M, İnci M. Analysis and modeling of wireless power transfer supported by quadratic boost converter interfaced fuel cell power source. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields 2022; 35: 1–14.
12. [12] Savrun M. M, İnci M, Büyük M. Design and analysis of a high energy efficient multi-port dc-dc converter interface for fuel cell/battery electric vehicle-to-home (V2H) system. Journal of Energy Storage 2022, 45: 103755.
13. [13] Mebarki B, Allaoua B, Draoui B, Belatrache D. Study of the energy performance of a PEM fuel cell vehicle. International Journal Of Renewable Energy Research 2017; 7: 1395–1402.
14. [14] İnci M, Büyük M, Savrun M. M, Demir M. H. Design and analysis of fuel cell vehicle-to-grid (FCV2G) system with high voltage conversion interface for sustainable energy production. Sustainable Cities and Society 2020; 67: 102753.
15. [15] Mirzapour F, Lakzaei M, Varamini G, Teimourian M. A new prediction model of battery and wind-solar output in hybrid power system. Journal of Ambient Intelligence and Humanized Computing 2019; 10: 77–87.
16. [16] Wang J, Wu X, Liu Z, Cui X, Member S, Song Z. Modified SEPIC DC-DC Converter with Wide Step-up / Step-down Range for Fuel Cell Vehicles. IEEE Transactions on Power Electronics 2022, PP: 1–15.
17. [17] Gu W. Designing A SEPIC Converter, National Semiconductor Application Note 1484. 2007.
18. [18] Wang N, Zhang J. N, Ni H, Jia H. Z, Ding C. Improved MPPT System Based on FTSMC for Thermoelectric Generator Array Under Dynamic Temperature and Impedance. IEEE Transactions on Industrial Electronics 2022; 69: 10715–10723.
19. [19] Uyanık T, Ejder E. Arslanoglu Y, Yalman Y, Terriche Y, Su Chun, Guerrero J. Thermoelectric Generators as an Alternative Energy Source 2022; 15: 1–14.
20. [20] Üstüner M. A, Mamur H, Taşkin S. Modeling and validation of the thermoelectric generator with considering the change of the Seebeck effect and internal resistance. Turkish Journal of Electrical Engineering and Computer Sciences 2022; 30: 2688–2706.