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http://hdl.handle.net/10397/688
| Title: | Slow-scale instability of single-stage power-factor-correction power supplies | Authors: | Dai, D Li, S Ma, X Tse, CKM |
Issue Date: | Aug-2007 | Source: | IEEE transactions on circuits and systems. I, Regular papers, Aug. 2007, v. 54, no. 8, p. 1724-1735 | Abstract: | This paper reports slow-scale instability in a single-stage power-factor-correction (PFC) power supply, which is a popular design solution for low power applications. The circuit employs a cascade configuration of a boost converter and a forward converter, which share an active switch and operate in discontinuous-conduction mode (DCM), to provide input PFC and tight output regulation. Main results are given by “exact” cycle-by-cycle circuit simulations. The effect of the slow-scale instability on the attainable power factor is illustrated in terms of total harmonic distortion which can be found by taking the fast Fourier transform of the input current. The slow-scale instability usually manifests itself as local oscillations within a line cycle. Based on the critical condition of DCM for the buck converter, the underlying mechanism of such instability is further investigated. It has been found that border collision is the underlying cause of the phenomenon. Moreover, it has been shown that the border collision observed here is effectively a nonsmooth Neimark-Sacker bifurcation. Finally, experimental results are presented for verification purposes. | Keywords: | Power-factor correction (PFC) Single-stage PFC power supply Instability Border collision |
Publisher: | Institute of Electrical and Electronics Engineers | Journal: | IEEE transactions on circuits and systems. I, Regular papers | ISSN: | 1549-8328 | EISSN: | 1558-0806 | DOI: | 10.1109/TCSI.2007.902516 | Rights: | © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holders. |
| Appears in Collections: | Journal/Magazine Article |
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| factor-correction_07.pdf | 2.88 MB | Adobe PDF | View/Open |
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