A Combination of VSG and Amended Fractional-Order Repetitive Control for Improving Power Quality of Grid-Connected Inverter

2019 ◽  
Author(s):  
Hamed Mohammad Kazemi ◽  
Ebrahim Afjei ◽  
Ali Rahmati
Keyword(s):  
Power Quality ◽  
Fractional Order ◽  
Repetitive Control ◽  
Grid Connected Inverter

Power Quality Problems in PV Fed Grid Connected Inverter

2014 ◽  
Vol 622 ◽  
pp. 147-151
Author(s):  
Natesan Saritha ◽  
Venkatesan Jamuna ◽  
N. Nanthini
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
System Performance ◽  
Short Circuit ◽  
Multilevel Inverter ◽  
Voltage Sag ◽  
Pv Inverter ◽  
Power Quality Disturbances ◽  
Grid Connected Inverter

—– In this paper, problem faced by grid connected pv inverter is presented. Inverters connected to grid are mostly affected due to short circuit problems in the power systems. Therefore it is essential to analyze power quality disturbances in order to improve the quality of the system. Performance of inverter is affected severely by voltage sag compared to other type of power quality disturbances. Also in this paper, multilevel inverter with sag condition and without sag condition is simulated using MATLAB/SIMULINK software

scholarly journals Allocation Control of Multi-functional Grid Connected Inverter and the Power Quality between of Grid Connected Microgrid Based on PSCAD Simulation Platform

2021 ◽  
Vol 2143 (1) ◽  
pp. 012034
Author(s):  
Yin Cheng ◽  
Gang Cao ◽  
Yaohong Liu ◽  
Yi Zhou
Keyword(s):  
Power Quality ◽  
Distributed Generation ◽  
Distribution Network ◽  
Limited Effect ◽  
Grid Connection ◽  
Reactive Current ◽  
Residual Capacity ◽  
Grid Connected Inverter ◽  
The One

Abstract On the one hand, the application of microgrid can effectively cut down the effect of distributed generation on distribution network, on the other hand, it helps to improve the power quality of distribution network. However, for the distribution network, a single multi-functional inverter has limited effect on the improvement of its power quality. Therefore, the allocation control of power quality by decentralized multi-functional inverters can further improve the utilization of inverters. This paper proposes to calculate the output current of multiple multi-functional inverters according to the harmonic and reactive current of the parallel node and the residual capacity of the multi-functional inverter. The simulation results show that the allocation control strategy proposed in this paper can effectively control the compensation capacity of the multi-functional inverter, so as to control the harmonic at the grid connection in place.

Power Quality of PV Multilevel Inverters in Residential Environment

2020 ◽  
Vol 18 ◽  
pp. 419-424
Author(s):  
M. Buzdugan ◽  
◽  
C. Ciugudeanu ◽  
A. Campianu
Keyword(s):  
Power Quality ◽  
Residential Environment ◽  
Multilevel Inverters

Performance Improvement of SVPWM-Based Three-Phase Grid-Connected Inverters

2013 ◽  
Vol 732-733 ◽  
pp. 1261-1264
Author(s):  
Zhi Lei Yao ◽  
Lan Xiao ◽  
Jing Xu
Keyword(s):  
Dynamic Response ◽  
Control Strategy ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Grid Current ◽  
Current Controller ◽  
Three Phase ◽  
Reference Grid ◽  
Grid Connected Inverter

An improved control strategy for three-phase grid-connected inverters with space vector pulse width modulation (SVPWM) is proposed. When the grid current contains harmonics, the d-and q-axes grid currents is interacted in the traditional control method, and the waveform quality of the grid current is poor. As the reference output voltage cannot directly reflect the change of the reference grid current with the traditional control strategy, the dynamic response of the grid-connected inverter is slow. In order to solve the aforementioned problems, the d-and q-axes grid currents in the decoupled components of the grid current controller are substituted by the d-and q-axes reference grid currents, respectively. The operating principles of the traditional and proposed control methods are illustrated. Experimental results show that the grid-connected inverter with the improved control strategy has high waveform quality of the grid current and fast dynamic response.

Sign in / Sign up

Export Citation Format

Share Document