Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/779
Title: Stability analysis of two-stage PFC power supplies
Authors: Dranga, Octavian
Chu, Grace
Tse, C. K. Michael
Wong, Siu-chung
Subjects: Electric converters
Electric current regulators
Electric potential
Issue Date: 2006
Publisher: IEEE
Source: PESC 2006 : 37th IEEE Power Electronics Specialists Conference, Jeju, South Korea, 18-22 June 2006, [p. 1-5].
Abstract: Power-factor-correction (PFC) power supplies are required to provide high input power factor and tight output voltage regulation. The usual configuration takes a two-stage cascade structure, consisting of a PFC preregulator and a dc/dc converter. Previous studies of the dynamical behaviour mainly focused on the boost PFC preregulator, assuming that it is being terminated by a resistive load. However, in practice, as the PFC preregulator is terminated by a dc/dc converter whose characteristics differ from resistive load's, the assumption of resistive load termination gives rather inaccurate information about the stability of the system. In this paper we study the complete two-stage PFC power supply and show that the interaction between the PFC stage and the dc/dc converter stage plays an important role in determining the stability of the system.
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Type: Conference Paper
URI: http://hdl.handle.net/10397/779
ISBN: 0780397169
9780780397163
Appears in Collections:EIE Conference Papers & Presentations

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