研究目的
To propose a new single-phase single-stage inverter for photovoltaic grid-tied systems that eliminates common-mode leakage current and suppresses double-line-frequency power oscillation.
研究成果
The proposed inverter effectively eliminates common-mode leakage current and suppresses double-line-frequency power oscillation with a simple structure and control strategy. It is also capable of outputting reactive power. Simulation results verify its validity.
研究不足
The paper does not explicitly mention limitations, but future work includes studying the influence of circuit parameters on the stability of the proposed inverter and building a laboratory prototype for experimental verification.
1：Experimental Design and Method Selection:
The paper proposes a new inverter topology and a mixed modulation strategy combining PWM and PFM.
2：Sample Selection and Data Sources:
Simulation model built based on PSIM.
3：List of Experimental Equipment and Materials:
Two MOSFET switches, three capacitors, two inductors, one diode, and other components as listed in Table I.
4：Experimental Procedures and Operational Workflow:
The operation of the proposed inverter consists of five modes, with detailed equivalent circuits and switching patterns provided.
5：Data Analysis Methods:
Simulation results are used to verify the validity of the proposed inverter and control strategy.
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