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Performance comparison of passive series R and shunt R-C damped LCL filter for grid-connected inverters
Date
2019-07-01
Author
Temiz, Hakan
Demirok, Erhan
Keysan, Ozan
Turkay, Ali
Cetinkaya, Burak
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
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LCL filters are widely used in distributed power-generation systems to attenuate high-frequency harmonics caused by pulse-width modulation switching of grid-connected inverters. A resonance occurs due to the series-connected reactive components. In order to damp resonance effects, active and passive damping methods are used. Lower switching frequencies are typically preferred to decrease switching power losses with high-power applications. Thus, control bandwidth of the system is limited and implementation of active damping gets harder. As a result, passive damping methods are commonly used in high-power applications. In this study, performances of two most commonly used passive damping methods which are series R damped and shunt R-C damped are analysed and compared in terms of resonance damping, grid current attenuation at high frequencies, and power losses on damping circuits.
Subject Keywords
Invertors
,
Power filters
,
Distributed power generation
,
Damping
,
Power grids
,
Performance comparison
,
Passive series R
,
Grid-connected inverters
,
Distributed power-generation systems
,
High-frequency harmonics
,
Pulse-width modulation
,
Series-connected reactive components
,
Resonance effects
,
Passive damping methods
,
Lower switching frequencies
,
Switching power losses
,
High-power applications
,
Active damping
,
Resonance damping
,
Grid current attenuation
,
High frequencies
,
Damping circuits
,
Shunt R-C damped LCL filter
URI
https://hdl.handle.net/11511/32892
Journal
JOURNAL OF ENGINEERING-JOE
DOI
https://doi.org/10.1049/joe.2018.9321
Collections
Department of Electrical and Electronics Engineering, Article