This is an open access article published by the IET under the Creative Commons Attribution -NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/)
This study proposes a flexible selective harmonic compensation and resonance damping algorithm for shunt active power filter (SAPF) applied in three-phase three-wire power distribution system. The selective harmonic compensation current reference extraction is based on recursive discrete Fourier transform. The resonance damping control strategy adopts damping gain auto-adjustment algorithm based on proportional–integral regulation of the point of common coupling (PCC) voltage total harmonic distortion. Theoretical analyses have shown that harmonic compensation together with resonance damping by the SAPF could obtain the best performance to improve the power quality of the power distribution system. Simulation and laboratory test results are provided to verify the effectiveness of the proposed strategy.
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http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2017.0604
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