The primary cascaded control loops and the phase-locked loop (PLL) can enable voltage source inverter operation in grid-forming and grid-following mode.
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).
In this test case, STS is open ( x STS = 0 ) and the inverter caters to the power demand from the three-phase load. The three-phase loads are configured to operate in constant power mode with the current limit of 8 A. Measured data from the spectrum analyser are fetched and plotted for controller performance analysis.
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.
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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 …
Learn MoreA 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.
Learn MoreThis article proposes a unified control framework for voltage source inverters (VSIs) operating in both grid-forming and grid-following modes, integrating current, voltage, and power control loops wi...
Learn MoreA 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 …
Learn MoreIn this paper, a grid-connected inverter control strategy based on closed-loop control of grid-side currents of grid-connected inverters when the three-phase voltages are …
Learn MoreAs 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 …
Learn MoreIn 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 …
Learn MoreThis article proposes a unified control framework for voltage source inverters (VSIs) operating in both grid-forming and grid-following modes, integrating current, voltage, and …
Learn MoreThis 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 …
Learn MoreSymmetry 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 …
Learn MoreA 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 …
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