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Supplementary materials for the article Optimized Design of Multi-Channel Resonant Converter for Fuel Cell Application, LLC converter design and optimization (C language code)
- Citation Author(s):
- Submitted by:
- Denys Zaikin
- Last updated:
- Fri, 05/31/2024 - 06:03
- DOI:
- 10.21227/dfz3-rj94
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Abstract
This research presents a multi-channel phase shift inductor-inductor-capacitor (LLC) resonant converter with a wide input and output voltage range that has been specially optimized for fuel cell applications. The worst-case minimum stack voltage and the battery voltage range were used to determine the optimal parameters of the LLC converter. The voltage gain of the converter operating at a constant power was considered, and an algorithm for such a calculation is proposed. Current balancing is implemented using channel temperature measurements, circumventing the need for expensive current sensors. A natural self-balancing mechanism is investigated for converters operating at high frequencies exceeding the series resonance frequency of a resonant converter. Efficiency optimization recommendations for the transformer turn ratio of the converter are illustrated. Multi-object optimization is implemented to achieve an optimized design so that both the minimum and maximum voltage gains can be realized; simultaneously, the transformer turn ratio is kept at a minimum to maintain high efficiency. An experimental prototype of a four-channel converter is implemented and verified at a 5-kW power level. Active content and the C language code files for converter calculations are also provided in this paper.
Supplementary materials description:
- C-code program that realizes optimizaion algorithms (Fig. 16 and 6).
Documentation
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Supplementary materials description.txt | 108 bytes |