The three-phase PV grid-connected inverter was designed based on the LQR method, where the tracking error was adjusted to zero through integration (Al-Abri et al., 2024). The disturbance rejection ability of the PV GCI was improved by designing the linear state inaccuracy feedback control policy (Zhou et al., 2021).
As the core device of the new energy production system, the grid-connected inverter plays a crucial role in transforming new energy into electrical energy. Rega
Firstly, the voltage-current dual-loop control (VDC) structure is adopted, where the model of the current loop is restructured benefitting from the current tracking principle.
Therefore, the proposed current loop optimal controller, based on the off-policy IRL method, effectively controls the voltage and current of the grid connection in the semi-physical simulation experiment. It minimizes the THD of the grid connection, satisfying the requirements for grid connection. Fig. 11.
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Symmetry of three-phase output voltage is one of the essential requirements for three-phase inverter. Conventional double-loop control strategy has a good control effect on …
The research incorporates an LCL filter to mitigate high-frequency harmonics in the output voltage of the inverter and implements a dual closed-loop control strategy comprising …
Abstract As to the concrete topology of three-phase LCL type grid-connected inverter with damping resistance, mathematical model was deduced in detail, using method of …
A double loop control method is developed in this paper for a grid connected three phase inverter. The SVPWM strategy is developed to reduce the THD of inverter output voltage.
In this paper, a novel dual closed-loop repetitive control strategy based on grid current feedback is proposed for single-phase grid-connected inverters with LCL filters. The …
The three-phase inverter is a crucial component for integrating photovoltaic power generation into the grid. Its performance directly impacts the stability and power quality of grid …
A dual-loop (inner current loop and outer voltage loop) control scheme for micro electric source inverters in microgrid is improved in this paper. In order to make dual-loop control analysis …
As the core device of the new energy production system, the grid-connected inverter plays a crucial role in transforming new energy into electrical energy. Regarding the …
In order to make dual-loop control analysis more accurate, LC filter, SVPWM module equivalent are included in the inverter supplied system model.
In the control scheme, a dual-loop PI controller is proposed in which the coupling components in the model of three-phase inverters are analyzed and handled by feed-forward …
According to the defects of traditional PI control, the paper presents a new method which is Proportional Complex Integral (PCI) control to implement the control of three-phase grid …
This paper has analyzed in detail the implementation principles and process of the three-phase LCL grid-tied inverter, and has adopted the dual closed-loop feedforward control …
Grid-connected inverter is an important part of the grid-connected system. Compared with the traditional L or LC filter, LCL filter has a better high-frequency harmonic …
In this article, a novel control method of the grid-connected inverter (GCI) based on the off-policy integral reinforcement learning (IRL) method is presented to solve two-stage …
This paper presents a reactive power and voltage (Q/V) control strategy of three-phase photovoltaic (PV) system to offering reactive power based on the typical dual-loop control …
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