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The objective of this paper is to propose a maximum current amplitude control (MCAC) for the Photovoltaic (PV) power system with the low-voltage ride-through (LVRT) behaviour. The proposed MCAC strategy can generate the demanded active and reactive power depending on the output power condition of the PV array and the power rating of the grid-tied inverter. It can be adapted to meet different LVRT...
The objective of this paper is to propose a modularized bi-directional grid-tied inverter (BGI) with asynchronous sigma-delta modulation (ASDM) control for the renewable energy (RE)-supplied DC power system. The proposed BGI can be operated either in the grid-tied mode (GTM) or the power factor correction mode (PFCM) which is necessary features for the RE-supplied DC power system. The proposed BGI...
The selection criteria of dc-link capacitor based on the optimal ac line current regulation strategy for the single-phase grid-connected photovoltaic (GCPV) system is proposed in this paper. The power flow of the GCPV system and the optimal ac line current regulation strategy are presented. The optimal ac line current regulation strategy can achieve dc-link voltage regulation in one ac mains cycle...
A novel DC bus regulation strategy for grid-connected PV power generation system is proposed in this paper. The power flow of the grid-connected PV power generation system is introduced first. The operational principles of different DC bus regulation strategies are presented. The mathematical equations for the current command adjustment of the injected AC line current are derived. The proposed DC...
The objective of this paper is to propose an analysis approach to analyze the dynamic characteristics of the grid-connected PV power generation system. The grid-connected PV power generation system will be introduced first. The dynamic relationship between the power flow and the DC bus voltage will be analyzed. Mathematical equations for the DC bus voltage dynamic variations, which are based on the...
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