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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Daud, Mohd Zaki
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Control & Systems Engineering Electrical & Electronics Engineering

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Comparison of control strategies for thermoelectric generator emulator Ayop, Razman; Tan, Chee Wei; Ayob, Shahrin Md; Daud, Mohd Zaki; Jamian, Jasrul Jamani; Nordin, Norjulia Mohamad
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i4.pp2094-2106

Abstract

Thermoelectric generator (TEG) can directly convert heat energy into electrical energy. It improves the power efficiency of the energy generation system by converting the power loss in the form of heat produced during the generation process into additional electrical energy. The TEG emulator (TEGE) is a power converter that produces a similar current-voltage characteristic as the TEG. It is a valuable device used to develop and test the TEG-based energy generation system. Nonetheless, the research on the TEGE is still in the early stage. This paper proposed a proper, low-cost, and high-efficient TEGE design using the buck converter. The contribution of the paper covers the TEG model in the form of an array, the buck converter design tailored to the TEGE, and 4 new control strategies proposed for the TEGE. The control strategies are the direct referencing method (DRM), perturb and observed (PnO) method, resistance comparison method (RCM), and resistance feedback method (RFM). The conventional proportional-integral controller is used to maintain a smooth operation during transient and steady-state periods. The results show the merits or demerits for each proposed control strategy based on the accuracy, transient response, stability, overshoot, and efficiency.
Co-Authors Ayob, Shahrin Md Ayop, Razman Jamian, Jasrul Jamani Norjulia Mohamad Nordin Tan, Chee Wei