Demonstrates enhanced efficiency in photovoltaic-battery systems, indicating improved design.
This paper presents a new three-port converter (TPC) topology optimized for photovoltaic-battery system integration. By integrating a three-level dual-boost converter with a full-bridge LLC converter via switch sharing, the proposed TPC simplifies power conversion and enables soft-switching, resulting in a more compact, efficient and cost-effective design. The three-level configuration effectively manages fluctuations in battery discharge voltage, while the interleaved structure reduces ripple currents in the PV panel, enhancing system stability. A hybrid PWM-PFM control strategy enables independent and efficient power management across all ports. The design and performance of the TPC are validated through theoretical analysis and experimental results.
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Zhang et al. (2025) studied this question.
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