Direct-coupled cascaded multilevel sag compensator

Visser A.J. ; Mouton H.du T. ; Enslin J.H.R. (2000)

Conference Paper

Voltage sags (or dips) are the most common power quality problem. The aim of this paper is to propose a multilevel-cascaded converter, connected in series with the supply, which acts as a sag compensator. The converter is direct-coupled and eliminates the use of costly output filters and injection transformers. The converter operation and control techniques are discussed and confirmed with simulations and practical results.

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