Abstract
This paper deals with grid-connected inverter (GCI) with gigantic utility impedance vacillation by using LCL filter. Next, the study also focuses on two-stage power conversion topology, which is called boost converter and GCI. Then, the LCL filter is one of significant sections in this topology. Moreover, the objective of this paper is to seek for understanding of the concept theories, which can be related to the proposed-topology. After that, the control systems which are named a maximum power point tracking (MPPT), DC voltage control and AC current control are added into the above-mention. In addition, the aforementioned projected in this paper is applied to GCI of 100kW. Furthermore, MATLAB software is actually needed because it plays a major role in producing outcome. Finally, results show that both harmonic filter and control system can be improved power stability between uncertain grid impedance and grid-connected inverter. Therefore, harmonics will decline and power stability will also generate.
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