International Journal For Multidisciplinary Research

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Potential of Power Electronics to Improve the Power Quality of Network Grid

Author(s) Abobkr Hassen. R. Mohamed, Saleman Abobker Amer
Country India
Abstract This study deals with voltage drop characterization of transmission systems by using power electronics circuits supplied from embedded generation.
Many grid-connected power electronic systems, such as STATCOMS, UPFCs, and distributed generation system interfaces, use Voltage Source Inverters (VSI) connected to the supply network through a filter. This filter, typically a series inductance acts to reduce the switch harmonics entering the distribution network an alternative filter is an LCL network, which can achieve reduced levels of harmonic distortion at lower switching frequencies and with less inductance, and therefore has potential benefits for higher power application. However, systems incorporating LCL filters require more complex control strategies.
This dissertation proposes a robust strategy for regulating the grid current connected via an LCL filter. The strategy integrates an outer loop grid current regulator with inner capacitor current regulation to stabilize the system. An asynchronous farm PI current regulation strategy is used for the outer grid current control loop. Linear analysis, simulation, and experimental results are used to verify the stability of the control algorithm across a range of operating conditions and finally, expressions for "harmonic impedance" of the system are derived to study the effects of supply voltage distortion on the harmonic performance of the system.
Keywords Power, Voltage, Grid, Network, Systems
Field Engineering
Published In Volume 5, Issue 4, July-August 2023
Published On 2023-08-18
Cite This Potential of Power Electronics to Improve the Power Quality of Network Grid - Abobkr Hassen. R. Mohamed, Saleman Abobker Amer - IJFMR Volume 5, Issue 4, July-August 2023. DOI 10.36948/ijfmr.2023.v05i04.5502
DOI https://doi.org/10.36948/ijfmr.2023.v05i04.5502
Short DOI https://doi.org/gsmnmr
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