Robust Voltage Control of a Single-Phase Grid-connected Inverter by $H_{\infty}$ Controller Considering the Load Fluctuation

2021 
In this paper, we address the new voltage control system of a single-phase grid-connected inverter. In this paper, we apply the standard $H_{\infty}$ control theory and specifically we formulate the voltage control problem as mixed sensitivity problem. By using this method, we can realize both the fastness and robustness of the voltage control under the condition that the uncertainty exists such as fluctuation of the load and the distribution lines. Finally, we confirm the effectiveness of the proposed method through numerical simulation.
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