Title :
Small-signal modeling of single-phase power-factor correcting AC/DC converters: a unified approach
Author :
Choi, J.Y. ; Cho, B.H.
Author_Institution :
Power Electron. Group, Seoul Nat. Univ., South Korea
Abstract :
A new small-signal model is introduced for single-phase PFC AC/DC converters. The derived small-signal transfer-functions-based on harmonic analysis-are valid up to half the switching-frequency. Thus it can be used to design a feedback-loop for a system requiring its bandwidth well over twice the line-frequency-such as single-stage PFC schemes. The model can also analyze the large-signal line-harmonics of the closed-loop system. Experimental results and comparisons with classical modeling method are given
Keywords :
AC-DC power convertors; closed loop systems; feedback; harmonic analysis; power factor correction; transfer functions; closed-loop system; feedback-loop design; harmonic analysis; large-signal line-harmonics; power-factor correcting AC/DC converters; single-phase; small-signal modeling; small-signal transfer-functions; Bandwidth; DC-DC power converters; Equations; Frequency; Harmonic analysis; Power electronics; Power system modeling; Steady-state; Switches; Topology;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703211
