Sharif University of Technology Scientia Iranica 1026-3098 32 15 2025 08 01 A novel Lyapunov-based nonlinear controller design for model-based maximum power point tracking of thermoelectric generators 7177 7177 10.24200/sci.2023.61170.7177 EN Sarah Kowsari Mogadam Department of Electrical Engineering, Ardabil Branch, Islamic Azad University, Ardabil, Iran. Mahdi Salimi Faculty of Engineering and Science, University of Greenwich, Kent, UK. 0000-0003-3007-3027 Seyyed Mohammad Taghi Bathaee Faculty of Electronic and Computer Engineering, K.N. Toosi University of Technology, Tehran, Iran. 0000-0002-6131-0219 Davar Mirabasi Department of Electrical Engineering, Ardabil Branch, Islamic Azad University, Ardabil, Iran. Journal Article 2022 09 25 A novel model-based approach for closed-loop control and Maximum Power Point (MPP) tracking of Thermoelectric Generators (TEG) has been presented using the nonlinear Lyapunov-based approach. As the TEG power derivative is always zero at MPP, it can be employed as a feedback signal for the controller. Hence, the reference value of the controller will always be zero, which simplifies the controller structure significantly. Since the reference calculation block can be removed, there is no need for a cascade multi-loop controller, which can improve the controller's dynamic response. Due to the elimination of the reference calculation unit, the proposed controller demonstrates superior performance, e.g., during temperature and load changes. The asymptotic stability of the proposed controller has been proved. To evaluate the accuracy of the controller, it is simulated using MATLAB software. Moreover, the experimental responses are provided by employing the TMS320F28335 DSP from Texas Instruments. According to the simulation and experimental results, and despite temperature and load changes over a wide range, the closed-loop system shows stable and robust performance as well as fast dynamic response and zero steady-state error. Finally, the response of the proposed controller is at least two times faster than the Perturb and Observe (P\O) controller. https://scientiairanica.sharif.edu/article_24100_f29c0f1c5f3cc955ceed26b4a4d6e1d9.pdf