研究目的
To propose a modified soft-switched boost converter with a lower number of auxiliary components for a single-phase grid-tied photovoltaic power generation system, employing incremental conductance MPPT procedure to control the DC/DC converter.
研究成果
The paper concludes that the proposed modified soft-switched boost converter with minimal auxiliary components can operate at either ZVT or ZCT for the main switch and diode, controlled by the incremental conductance MPPT algorithm. Simulation results confirm the applicability of the presented topology, demonstrating its effectiveness in a photovoltaic power conditioning system.
研究不足
The study focuses on simulation results using PLECS software, and the practical implementation and testing of the proposed converter in real-world conditions are not covered. The power loss in passive components such as inductors and capacitors is neglected in the efficiency estimation.
1：Experimental Design and Method Selection:
The study proposes a modified soft-switched boost converter designed to operate at either ZVT or ZCT for the main switch and diode, with a focus on reducing the number of auxiliary components. The incremental conductance MPPT algorithm is employed for maximum power point tracking.
2：Sample Selection and Data Sources:
The study utilizes three parallel-connected KC200GT solar modules with 54 series-connected solar cells for modeling and simulations.
3：List of Experimental Equipment and Materials:
The simulation is performed using PLECS software. The circuit includes a resonant capacitor (Cr), a resonant inductor (Lr), an auxiliary switch (S2), and an auxiliary diode (D2).
4：2).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The operation of the proposed converter is divided into six modes, detailing the transition between states to achieve ZVT or ZCT conditions.
5：Data Analysis Methods:
The performance of the proposed converter is validated through simulation results, including output characteristic figures of the photovoltaic module, voltage and current waveforms of the converter's elements, and efficiency comparison between hard switching and soft switching.
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