研究目的
Investigating the stability problem of the grid-connected inverters (GCIs) for possible variations in grid impedance and proposing a new type of H1 control method for the current control loop of inverters.
研究成果
The proposed H1 controller, with the third weighting function determined using game theory, shows superior performance in maintaining stability and reducing THD values under varying grid impedance conditions compared to the PI controller. The method is effective for grid-connected inverters in photovoltaic systems.
研究不足
The study is based on computer simulations, and the practical implementation and experimental validation of the proposed method are not discussed.
1：Experimental Design and Method Selection:
The study employs a new type of H1 control method for the current control loop of inverters, with the third weighting function determined using game theory.
2：Sample Selection and Data Sources:
The method is applied to the GCI in a photovoltaic system, with system parameters given in a table.
3：List of Experimental Equipment and Materials:
Includes grid-connected inverters, photovoltaic systems, and simulation tools like Simulink and S-function features of Matlab.
4：Experimental Procedures and Operational Workflow:
Computer simulations are conducted to compare the performance of H1 and PI controllers under different grid conditions.
5：Data Analysis Methods:
The performance is evaluated based on stability, tracking performance, and total harmonic distortion (THD) values under different conditions.
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