MODELING OF THE 3-PHASE POWER CONTROLLED IN DISCRETE MODE - APPLICATION IN INDUSTRIAL HEATING

This paper suggests a method to characterize the three-phase instantan eous power wave for an industrial heating approach using several three -phase converters. To obtain a global behaviour of this plant when the control is assumed by the means of full wave trains using minimal per iod (discrete control calling syncop mode), different three-phase pour er modelling methods are submitted. From the computed converter contro l signals; an associated rebuilding procedure of the three-phase insta ntaneous power allows to simulate and characterize performances of the se industrial-heating systems. Simulation results validated by experim ental tests allow envisaging the global strategy development minimisin g fluctuations of the instantaneous three-phase power.