研究目的
To present a new transformerless structure for PV inverters that keeps the common mode voltage constant in all switching periods and suppresses the leakage current.
研究成果
The proposed transformerless inverter topology effectively suppresses leakage current by maintaining a constant common mode voltage across all switching periods. Simulation results confirm the viability of the proposed structure for grid-connected PV systems, offering a promising solution with high efficiency and reduced leakage current.
研究不足
The study is based on simulation results, and practical implementation challenges such as component tolerances, temperature effects, and real-world grid conditions are not considered.
1：Experimental Design and Method Selection:
The study involves the design of a new transformerless inverter configuration for grid-connected PV systems. The methodology includes mathematical analysis and simulation using MATLAB/Simulink and PLECS Blockset to verify the performance of the proposed structure.
2：Sample Selection and Data Sources:
The study focuses on the simulation of the proposed inverter topology under specified conditions to evaluate its performance in terms of leakage current suppression and common mode voltage stability.
3：List of Experimental Equipment and Materials:
The simulation tools MATLAB/Simulink and PLECS Blockset are used for the analysis.
4：Experimental Procedures and Operational Workflow:
The proposed inverter topology is simulated under various switching states to analyze its performance in suppressing leakage current and maintaining constant common mode voltage.
5：Data Analysis Methods:
The results are analyzed based on the simulation outputs, including inverter output voltage, injected grid current, and leakage current.
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