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A New Integrated Variable Transformer Topology for Electronic Ballasts

Perdigão, M. ; Saraiva, E. S.

A New Integrated Variable Transformer Topology for Electronic Ballasts, Proc IEEE Industrial Electronics Conf. - IECON, Porto, Portugal, Vol. xx, pp. xx - xx, November, 2009.

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Abstract
The purpose of this work is to present a completely new and
different approach to magnetically-controlled electronic ballasts for fluorescent lighting systems, based on an integrated variable
transformer. The authors propose an effective way to control the lamp operation, by integrating the magnetic component necessary to control the lamp current into a variable transformer which grants
simultaneously output electrical isolation. It is suggested a new variable
transformer topology and presented a comprehensive description of its
behavior, modeling and characterization. Experimental results validate
the model and the adequacy of this new control technique.