研究目的
To present the topology, modelling, and control strategy for a single-phase grid-connected converter for photovoltaic (PV) applications based on the series-resonant dual active bridge (DAB).
研究成果
The paper successfully develops detailed analytical models for series-resonant DAB-based converters and proposes a control strategy with voltage and current feedback loops. Simulation and experimental results validate the efficacy of the models and control strategy.
研究不足
The study focuses on a specific converter topology and may not cover all possible variations or applications in the field of power electronics and PV systems.
1：Experimental Design and Method Selection:
The study involves the development of a state-space large-signal model for phase-shift based modulations and a linearized model for control design.
2：Sample Selection and Data Sources:
The converter is designed for PV applications, with parameters such as transformer turns ratio, resonant inductance, and capacitance specified.
3：List of Experimental Equipment and Materials:
Includes a dc-side full-bridge converter, high-frequency transformer, series resonant tank, and ac-side four-quadrant full-bridge converter.
4：Experimental Procedures and Operational Workflow:
The converter is operated at a switching frequency above the resonant frequency, with modulation techniques applied to control power flow.
5：Data Analysis Methods:
Simulation and experimental results are used to validate the model and control strategy.
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