Design Considerations and Performance Investigation of a Five-Level Cascaded Multilevel LLC Boost DC–DC Converter

Bughneda, Ali; Salem, Mohamed; Hossain, Eklas; Ishak, Dahaman; Prabaharan, Natarajan

doi:10.1109/access.2023.3249229

IEEE Access

2023

DOI: 10.1109/access.2023.3249229

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Design Considerations and Performance Investigation of a Five-Level Cascaded Multilevel LLC Boost DC–DC Converter

Ali Bughneda

Mohamed Salem

Eklas Hossain

et al.

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Cited by 2 publications

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Modelling a five‐level LLC resonant converter for bidirectional battery application

Alatai,

Salem,

Delgado

et al. 2024

Circuit Theory & Apps

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SummaryThis study designed and evaluated an integrated cascaded pair of full‐bridge LLC resonant bidirectional DC–DC converters usable in varied applications, including in energy storage systems, to function as an interface between two dc voltage buses in a variety of applications. The proposed converter combines an isolated five‐level cascaded H‐bridge LLC (IFCHB‐LLC) resonant circuit with a buck/boost circuit (bidirectional converter BID). In this converter, the inbuilt capabilities of an LLC converter, which function as a current source and a voltage source, were exploited, resulting in the constant current (CC) and constant voltage (CV) charges while CV was implemented in the discharge stage (reverse flow). The modelling of the LLC converter was done following the first harmonic approximation (FHA) approach. Furthermore, to ensure improved efficiency of the proposed system, the passive elements of the resonance tank and isolation transformer ratio were programmed in a manner that the converter can be operated within the zero‐voltage switching (ZVS) and zero‐current switching (ZCS) regions. The feasibility and validity of the converter were tested using a 500 W prototype converter with an input voltage of 200 V resulting in the highest efficiency level of 94.46%.

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Modelling a five‐level LLC resonant converter for bidirectional battery application

Alatai,

Salem,

Delgado

et al. 2024

Circuit Theory & Apps

View full text Add to dashboard Cite

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Integrated Multiport DC-DC and Multilevel Converters for Multiple Renewable Energy Source Integration

Jiya,

Salem,

Van Khang

et al. 2023

IEEE Access

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Design Considerations and Performance Investigation of a Five-Level Cascaded Multilevel LLC Boost DC–DC Converter

Cited by 2 publications

References 46 publications

Modelling a five‐level LLC resonant converter for bidirectional battery application

Modelling a five‐level LLC resonant converter for bidirectional battery application

Integrated Multiport DC-DC and Multilevel Converters for Multiple Renewable Energy Source Integration

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