Abstract
A method for modeling PWM converters operating in continuous conduction mode (CCM) is introduced. First, static voltage and current transfer functions of the idealized switching part of the converters are found. Second, the linearization of these transfer functions at the operating point is carried out, and the idealized switching part is replaced by dependent current and voltage sources. Third, the equivalent average resistance of parasitic resistances and equivalent average voltage of offset voltage sources of switches are determined using the principle of energy conservation. The method leads to linear DC and small-signal circuit models of a PWM converter. To illustrate the method, the analysis of the PWM flyback converter is given. Design equations for DC voltage transfer function, efficiency, and small-signal characteristics are derived.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 688-693 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications |
| Volume | 39 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 1992 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Linear circuit models of PWM flyback and buck/boost converters. / Czarkowski, Dariusz; Kazimierczuk, Marian K.
In: IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, Vol. 39, No. 8, 08.1992, p. 688-693.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Linear circuit models of PWM flyback and buck/boost converters
AU - Czarkowski, Dariusz
AU - Kazimierczuk, Marian K.
PY - 1992/8
Y1 - 1992/8
N2 - A method for modeling PWM converters operating in continuous conduction mode (CCM) is introduced. First, static voltage and current transfer functions of the idealized switching part of the converters are found. Second, the linearization of these transfer functions at the operating point is carried out, and the idealized switching part is replaced by dependent current and voltage sources. Third, the equivalent average resistance of parasitic resistances and equivalent average voltage of offset voltage sources of switches are determined using the principle of energy conservation. The method leads to linear DC and small-signal circuit models of a PWM converter. To illustrate the method, the analysis of the PWM flyback converter is given. Design equations for DC voltage transfer function, efficiency, and small-signal characteristics are derived.
AB - A method for modeling PWM converters operating in continuous conduction mode (CCM) is introduced. First, static voltage and current transfer functions of the idealized switching part of the converters are found. Second, the linearization of these transfer functions at the operating point is carried out, and the idealized switching part is replaced by dependent current and voltage sources. Third, the equivalent average resistance of parasitic resistances and equivalent average voltage of offset voltage sources of switches are determined using the principle of energy conservation. The method leads to linear DC and small-signal circuit models of a PWM converter. To illustrate the method, the analysis of the PWM flyback converter is given. Design equations for DC voltage transfer function, efficiency, and small-signal characteristics are derived.
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UR - http://www.scopus.com/inward/citedby.url?scp=0026900634&partnerID=8YFLogxK
U2 - 10.1109/81.168931
DO - 10.1109/81.168931
M3 - Article
VL - 39
SP - 688
EP - 693
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
SN - 1057-7122
IS - 8
ER -