An AC-to-AC converter based voltage regulator

Van Schalkwyk C. ; Beukes H.J. ; Du T Mouton H. (2002)

Conference Paper

This paper presents an AC voltage regulator based on a pulse width modulated AC-to-AC converter and a step-down transformer. The regulator is aimed at electrification of small rural communities and compensates for the voltage variations ranging from +10% to -40% of the nominal. The fast dynamics associated with a pulse width modulated converter is a significant benefit when compared to more conventional techniques, for instance the use of tap changing transformers.

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