研究目的
To propose a multiport converter (MPC) configuration for photovoltaic (PV)-battery system that integrates battery charging and discharging circuits with the PV power optimizer through a high frequency AC link, capable of regulating the output voltage, following battery charging profile, and tracking the maximum power point (MPP) of each PV module.
研究成果
The proposed MPC for PV-battery systems effectively integrates battery charging and discharging circuits with the PV power optimizer, achieving high efficiency (over 95% for all conditions), output voltage regulation, MPPT, and soft-switching operations. The design's compactness and efficiency make it a promising solution for renewable energy systems with energy storage.
研究不足
The study is limited to a 175W system prototype, and the efficiency and performance metrics are specific to the tested conditions. The scalability and applicability to larger systems or different configurations are not extensively explored.
1：Experimental Design and Method Selection:
The proposed MPC integrates a PV power optimizer with battery charging and discharging circuits through a high frequency AC link, utilizing variable switching frequency for MPPT and soft-switching techniques for all switches.
2：Sample Selection and Data Sources:
A 48V, 175W prototype is simulated and tested, using a commercial solar panel (OPT325) for simulation and an E4360A solar emulator from Keysight for hardware testing.
3：List of Experimental Equipment and Materials:
Includes a 175W system prototype, commercial solar panel, E4360A solar emulator, and various components like switches (STP24N60DM2-EP), diodes (MUR1560), and capacitors (ECQ-E1106JF).
4：Experimental Procedures and Operational Workflow:
The converter's performance is validated through simulation and experimental results, focusing on MPPT efficiency, output voltage regulation, and soft-switching operations.
5：Data Analysis Methods:
The stability, settling time, and output ripple of the proposed controller are analyzed, with efficiency measurements taken across different operating conditions.
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