Abstract
The article introduces an extremum seeking control (ESC) technique for determining the optimal operating points of a multi-stage converter named twin-bus buck converter (TBB) [8]. The TBB converter features several modulation parameters, such as the switching frequencies of the CLLC stage and of the TBB post-regulator, which have a notable impact on the overall conversion efficiency. The benefit of off-line optimization techniques is limited due to the difficulties in modeling the converter behavior and the dependence on the actual operating point. Then, a model-free online search method based on the ESC technique is investigated and applied herein to find the optimal switching frequency of the TBB converter stage. The originality of this work lies in the utilization of small frequency perturbations that generate minimal effects on the objective variable, allowing for system optimization. The effectiveness of the proposed search technique is verified through experimental validation using a prototype rated 10 kW.
Study carried out within the MOST–Sustainable Mobility Center and received funding from the European Union Next-GenerationEU (Piano Nazionale di Ripresa e Resilienza (PNRR)–Missione 4, Componente 2, Investimento 1.4–D.D.1033-17/06/2022, CN00000023). The manuscript reflects only the authors’ views and opinions, neither the European Union nor the European Commission can be considered responsible for them.
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References
Ariyur, K., Krstic, M.: Real-Time Optimization by Extremum-Seeking Control. Wiley, New York, NY, USA (2003)
Bazzi, A.M., Krein, P.T.: Ripple correlation control: an extremum seeking control perspective for real-time optimization. IEEE Trans. Power Electron. 29(2), 988–995 (2014). https://doi.org/10.1109/tpel.2013.2256467
Cao, Y., Ngo, M., Yan, N., Dong, D., Burgos, R., Ismail, A.: Design and implementation of an 18 kW 500 kHz 98.8% efficiency high-density battery charger with partial power processing. IEEE J. Emerg. Sel. Top. Power Electron. 10(6), 7963–7975 (2021). https://doi.org/10.1109/jestpe.2021.3108717
Hu, Y., Shao, J., Ong, T.S.: 6.6 kW high-frequency full-bridge LLC DC/DC converter with SiC MOSFETs. In: 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE (2019). https://doi.org/10.1109/ecce.2019.8912805
Ibrahim, A.A., Caldognetto, T., Biadene, D., Mattavelli, P.: Multidimensional ripple correlation technique for optimal operation of triple-active-bridge converters. IEEE Trans. Ind. Electron. 70(8), 8032–8041 (2023). https://doi.org/10.1109/tie.2022.3224182
Ibrahim, A.A., Caldognetto, T., Biadene, D., Mattavelli, P.: Online loss reduction of isolated bidirectional DC-DC quad-active bridge converters. In: 2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC). IEEE (2023). https://doi.org/10.1109/esars-itec57127.2023.10114825
Tu, H., Feng, H., Srdic, S., Lukic, S.: Extreme fast charging of electric vehicles: A technology overview. IEEE Trans. Transp. Electrification 5(4), 861–878 (2019). https://doi.org/10.1109/tte.2019.2958709
Zanatta, N., Caldognetto, T., Biadene, D., Spiazzi, G., Mattavelli, P.: A two-stage DC-DC isolated converter for battery-charging applications. IEEE Open J. Power Electron. 4, 343–356 (2023). https://doi.org/10.1109/ojpel.2023.3271227
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Zanatta, N., Caldognetto, T., Biadene, D., Mattavelli, P. (2024). Extremum Seeking Control for the Efficiency Optimization of a Multi-stage Converter. In: Ciofi, C., Limiti, E. (eds) Proceedings of SIE 2023. SIE 2023. Lecture Notes in Electrical Engineering, vol 1113. Springer, Cham. https://doi.org/10.1007/978-3-031-48711-8_33
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DOI: https://doi.org/10.1007/978-3-031-48711-8_33
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