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The Voltage-controlled compensation ramp: A new waveshaping technique for Power Factor Correctors

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5 Author(s)
Sebastian, J. ; Grupo de Sist. Electronicos de Alimentation, Univ. de Oviedo, Gijon ; Lamar, D.G. ; Arias, M. ; Rodriguez, M.
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This paper deals with a new control method for Power Factor Correctors. Control is carried out by a standard IC controller for peak current-mode dc-dc converters, with only an additional compensation ramp generator and peak detector. Neither an analog multiplier nor an input voltage sensor is needed to achieve quasi-sinusoidal line waveforms, which makes this method very attractive. The method is similar to the one-cycle control method, but can be very easily adapted for use with topologies different to the boost converter, i.e. flyback, buck-boost, SEPIC Cuk and Zeta topologies. Moreover, as the line current is cycle-by-cycle controlled, the resulting input current feedback loop is extremely fast, thus allowing the use of this type of control with high frequency lines.

Published in:

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Date of Conference:

24-28 Feb. 2008