Title

Small-Signal Modeling Of A Single-Switch Ac/Dc Power-Factor-Correction Circuit

Abstract

In this paper, a small-signal model for a new single-switch single-stage switched-mode power-factor-correction (PFC) converter is presented. The model is obtained by applying the small-signal perturbation technique to the circuit equations derived from the state-space averaging method. By applying the perturbation and averaging techniques over one switching cycle, the dc and small-signal equivalent circuit representations of this converter are derived. The result shows that this converter exhibits the transfer characteristics of a second-order low-pass system for the output-to-input transfer function and that of a combined second-order low-pass and band-pass system for the output-to-control transfer function. The validity of the proposed mathematical model was verified by the given experimental results for a specified design example.

Publication Date

12-1-1999

Publication Title

IEEE Transactions on Power Electronics

Volume

14

Issue

6

Number of Pages

1142-1148

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/63.803408

Socpus ID

0033312119 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0033312119

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