This paper is aimed at proposing a computational model to represent projector devices and to perform studies involving non-ideal voltage supply conditions. In order to validate the model, experimental and computational analyses are carried out to highlight the equipment behavior and the model accuracy under normal and abnormal conditions. The equipment is represented throughout a switched source with a boost converter. Although the results are related to this specific product it should be emphasized the approach could be extended to other products having similar principles. Both theoretical and experimental investigations take into account: voltage distortion, fluctuation, sag, swell and interruption.Index Terms--Boost converter, computational modeling, equipment performance, power quality, projector and switched source.The authors acknowledge the financial support received from Brazilian Councils FAPEMIG and CAPES for the doctorate and master scholarship as well as from CEB Distribution Power Utility for the accomplishment of a P&D project, which resulted in this paper.M. V. B. Mendonça is PhD student
This paper aims at analyzing the relationship between VSI-PWM frequency converters behavior and a very common type of power quality disturbance, i.e. the well known voltage sag effect. By using a proper model into the Saber Simulator, simulation results for a typical system under symmetrical and asymmetrical sag phenomenon conditions are shown. Experimental results are also given in order to validate the computational behaviour. The converter ride-through capability as well as the protection units interaction are also included into the analysis.
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