On reactive power injection control of distributed grid-tied AC-stacked PV inverter architecture

2016 ◽  
Author(s):  
Hamidreza Jafarian ◽  
Babak Parkhideh ◽  
Johan Enslin ◽  
Robert Cox ◽  
Shibashis Bhowmik
Keyword(s):  
Reactive Power ◽  
Pv Inverter ◽  
Power Injection ◽  
Injection Control

scholarly journals Implementation of a Photovoltaic Inverter with Modified Automatic Voltage Regulator Control Designed to Mitigate Momentary Voltage Dip

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6244
Author(s):  
Anderson Rodrigo Piccini ◽  
Geraldo Caixeta Guimarães ◽  
Arthur Costa de Souza ◽  
Ana Maria Denardi
Keyword(s):  
Reactive Power ◽  
Active Power ◽  
Photovoltaic System ◽  
Voltage Regulator ◽  
Voltage Sags ◽  
Distribution Grid ◽  
Voltage Dip ◽  
Automatic Voltage Regulator ◽  
Power Injection ◽  
Injection Control

The main objective of this research is to propose an active and reactive power injection control in order to mitigate voltage sags. The proposed control strategy works in conjunction with a modified version of an automatic voltage regulator (AVR), where it will act on the active and reactive powers injected by the inverter to reduce the effects of voltage sags. In this way, the control will avoid possible shutdowns and damage to the equipment connected to the grid. The voltage improvement can be perceived for consumers connected to the power system. Modifications in AVR model and parameters are performed to speed up its performance, thus identifying the short-duration voltage variations (SDVV) and, consequently, the control acts to alter the powers, decreasing the active power injection and increasing the reactive power based on inverter capacity during the momentary voltage dip (MVD). Finally, when the fault is cleared, all values return to the pre-fault condition, so that the inverter only operates with active power. A 75 kW three-phase grid-connected photovoltaic system (GCPVS) equipped with the proposed control was inserted in a distribution grid of the city of Palmas, state of Tocantins, Brazil, and all of the computer simulations were performed on the Matlab/Simulink®.

LV Grid Voltage Regulation Using Transformer Electronic Tap Changing, With PV Inverter Reactive Power Injection

2015 ◽  
Vol 3 (4) ◽  
pp. 1182-1192 ◽  
Author(s):  
Roozbeh Kabiri ◽  
Donald Grahame Holmes ◽  
Brendan P. McGrath ◽  
Lasantha Gunaruwan Meegahapola
Keyword(s):  
Reactive Power ◽  
Voltage Regulation ◽  
Grid Voltage ◽  
Pv Inverter ◽  
Power Injection
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