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AC/DC Resonant Converter to Control for DC Arc furnace  

Jaan Jarvik (Tallinn Technical University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.1, 2003 , pp. 1-8 More about this Journal
Abstract
When solving the problems of electric power quality the converters with high Power factor are useful for the DC arc furnace power supply. In this paper, resonant converters of 50(60) Hz AC to DC arc described, where in each period of network voltage the capacitor and inductor of an oscillatory circuit are switched from series into parallel and vice versa parametrically. The duration of series and parallel connection and also the transformation ratio are dependent on load. Parallel oscillatory circuit restricts the short circuit current. These converters have high power factor from no-load to short-circuit and fit very well to supply are furnaces.
Keywords
DC Arc Furnace; Resonant Converter; Power factor; Reactive power compensation;
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