PDF | On Jan 1, 2022, 宜伟 冯 published Review of Inverter Topology and Control Strategy in Intelligent Microgrid | Find, read and cite all the research you need on ResearchGate
To reduce the impact of the imbalance of mixed non-linear loads on an inverter voltage output in the microgrid, we improve the disadvantage of the lack of damping and inertia for traditional droop control. This paper proposes a
In Case 4, the inverter is simultaneously connected with heavy loads, unbalanced loads and nonlinear loads to test the ability of the proposed control strategy to keep the output
low-inertia microgrid with two control strategies of different percentages of GFM inverters and indicates that the microgrid with a higher percentage of GFM inverters has better stability,
Control of inverters: Llaria et al 64: A survey on MGs on two important features: unplanned islanding and control of inverters in that scenario are presented All time scales of the
Aiming at the imbalance problem in the control of the microgrid inverter, Figure 9 shows the voltage waveforms of the inverter for the control strategy proposed in this study. First, the
Abstract— This paper investigates the stability of low-inertia microgrid systems with two control strategies that have different percentages of grid-forming (GFM) inverters. The first control
The repetitive control based on the internal model principle can realize the precise tracking of periodic signals, and can effectively suppress the periodic disturbance [21],
In order to improve the anti-interference ability and transient response speed of the output voltage of Isolated AC microgrid inverter, a dynamic compensation control structure
Keywords Microgrid, Control performance, Inverter, Narendra model, Adaptive control strategy Microgrid refers to a small power grid composed of small distributed power sources that can
Power generation from Renewable Energy Sources (RESs) is unpredictable due to climate or weather changes. Therefore, more control strategies are required to maintain the proper power supply in the entire
The adaptive three-order sliding control as the microgrid inverter inner loop. Mohamed et al. [16] present a direct-voltage control strategy for a microgrid converter on the
Aiming at the deviation of output voltage amplitude and frequency after using traditional droop control method in parallel inverter of microgrid, an improved dynamic adaptive droop control
In this paper, an adaptive control strategy applied to voltage source inverter in MG is proposed based on Narendra adaptive theory to improve the output voltage quality of the inverter under complex working conditions.
For microgrid control with unknown disturbance characteristics, based on the adaptive control strategy, a new sliding mode control method with a compound reaching law is designed in this paper to further improve the control performance of microgrid inverters. Circuit structure diagram of microgrid inverter system in island mode is shown in Fig. 1.
Among them, there are two ways of droop control, one is to take reactive–frequency (Q–f) and active–voltage (P–V) droops to control the microgrid inverter under grid-connected conditions, and since it is a grid-connected mode, the voltage and frequency of the system are mainly considered and the reference value of the output power is calculated.
In view of this, research will introduce ACS based on the integration of Narendra, hoping to improve microgrid inverters’ control stability. Microgrid 16, 17, 18, 19, 20 inverter ACSY is an intelligent control system that can automatically adjust control strategies based on changes in network parameters.
Sliding mode control method based on a compound reaching law was proposed to improve the robustness of an inverter system. For an unknown disturbance boundary, an adaptive sliding mode control was designed to control the output voltage of the inverter system.
Generally speaking, inverter control of a microgrid in the islanding mode is based on coordinate conversion. Thus, the three-phase AC signal is converted into a DC signal in the two-phase rotating coordinate system, and inverter control is accomplished by conventional control methods such as PI control [ 10 ].
The second part first introduces the adaptive control system (ACSY) for microgrid inverters that integrate Narendra model, and then makes improvements based on this. Next, the performance of Narendra based microgrid inverter ACS was verified, and performance testing and comparative analysis experiments were conducted.
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