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Model-Based Optimization of an LLC-Resonant DC-DC Converter

Faculty Electronic Engineering and Technology, Technical University of Sofia, Sofia 1000, Bulgaria
Faculty of Applied Mathematics and Informatics, Technical University of Sofia, Sofia 1000, Bulgaria
Author to whom correspondence should be addressed.
Electronics 2019, 8(7), 799;
Received: 10 June 2019 / Revised: 13 July 2019 / Accepted: 14 July 2019 / Published: 17 July 2019
(This article belongs to the Section Power Electronics)
PDF [6177 KB, uploaded 17 July 2019]
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The study presented in the paper is to guarantee the performance of the LLC DC-DC converter using model-based optimization. The primary scope of the study is to maintain the output parameters regardless of the variation of the values of the circuit elements. In engineering practice, it is known that any schematic element cannot be reproduced with an absolute accuracy of features. In addition, its main parameters change during operation due to changes in operating temperature, aging, operating modes and so on. Optimization procedures are a tool for finding the most appropriate values for circuit elements, with selected constraints, target functions and operating modes. In electronic converters, these are most often: minimal loss, maximum efficiency, the critical-aperiodic transition process, realization of certain dynamics, appropriate modes of operation and so on. The results obtained show that using the proposed approach produces more robustness to disturbances and tolerances, with improved dynamics and faster transient processes. On the other hand, the value of the circuit elements is smaller, and reliable operation of the protection and automatic regulation systems is achieved. View Full-Text
Keywords: LLC DC-DC converter; mathematical optimizations; modeling; guaranteed parameters; tolerance analysis LLC DC-DC converter; mathematical optimizations; modeling; guaranteed parameters; tolerance analysis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Hinov, N.; Gilev, B.; Hranov, T. Model-Based Optimization of an LLC-Resonant DC-DC Converter. Electronics 2019, 8, 799.

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