Fig 10 - uploaded by Ali Saadon Al-Ogaili
Content may be subject to copyright.
Source publication
In a Grid-Connected Photovoltaic System (GCPS), the inverters are applied for integration with the power grid. This integration brings some issues at the connection point. Therefore, grid-tied inverter control performs a vital role in feeding the power system with good power quality. This study presents a current-controlled Voltage Source Inverter...
Contexts in source publication
Context 1
... Fig. 8, it can be seen that the voltage fluctuation at PCC under the 6% limits and therefore matched the required standard at steady-state conditions. Fig. 9 shows the output of the inverter line voltage that regulated to be compatible with the dc-link reference voltage. Fig. 10 illustrates the d-axis and q-axis of the voltage and current of the VSI decupling control at normal operation. It can be noticed that the current of the q-axis is kept zero, and d-axis current is set at the rated value (1 p.u) because the inverter always operates at almost unity power factor during steady-state operation [14]. The ...
Context 2
... Fig. 8, it can be seen that the voltage fluctuation at PCC under the 6% limits and therefore matched the required standard at steady-state conditions. Fig. 9 shows the output of the inverter line voltage that regulated to be compatible with the dc-link reference voltage. Fig. 10 illustrates the d-axis and q-axis of the voltage and current of the VSI decupling control at normal operation. It can be noticed that the current of the q-axis is kept zero, and d-axis current is set at the rated value (1 p.u) because the inverter always operates at almost unity power factor during steady-state operation [14]. The ...
Similar publications
With superior performance, zero-emission, and less maintenance cost, EVs are forecasted to replace the conventional internal combustion engines entirely. The charging time of EVs is seen as a significant hindrance to EV adaptation. There are two different charging methods: (a) Slow charging-via the domestic power supply and (b) Fast charging-via co...
Citations
... For a sustainable society and environment, massive introduction of Renewable Energy (RE), such as photovoltaic systems and wind power systems, is required [1]- [2]. The RE is connected to the power system by inverters [3]- [5]. At this time, the active and reactive power of the inverter can be controlled by adjusting current by following the voltage and the phase angle of the grid voltage reference. ...
The Virtual Synchronous Generator (VSG) can give virtual inertia and imitate primary control of the synchronous generator. This paper focuses on grid-following (GFL) type VSG for easy parallel operation compared to voltage source inverter. The grid frequency support of GFL-VSG can be achieved by controlling active power output using frequency deviation. However, this control causes the delay because of feedback for the virtual inertia. This paper proposes the GFL-VSG with the parallel installation of the governor and swing equation to reduce the delay. The numerical simulation was carried out to verify its effect and grid frequency support of the proposed GFL-VSG. The result shows that grid frequency support by GFL-VSG is faster compared with the conventional method, and the gate frequency is more stable with multiple several VSGs.
