Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13729
Title: Small signal modeling of DC-DC power converters based on separation of variables
Authors: NG POH KEONG
Keywords: small signal model, fast variables, slow variables, separation, dc-dc, and power converter
Issue Date: 8-Mar-2004
Source: NG POH KEONG (2004-03-08). Small signal modeling of DC-DC power converters based on separation of variables. ScholarBank@NUS Repository.
Abstract: The proposed separation of variables method (SVM) is developed intuitively based on the assumption that a converter circuit can be separated into a fast and a slow sub-circuits under small signal behavior. The SVM assumes the fast sub-circuit reacts instantaneously to perturbations, while the slow sub-circuit reacts very slowly. The latter are typically associated with large dynamical elements and to be replaced by constants sources. A small signal behavior of the converter, whose model parameters are constants, is obtained through perturbing the constant sources. The model parameters allows a small signal equivalent circuit to be constructed. Therefore its frequency responses can be obtained either through circuit simulation or analytical approaches. The SVM method is applied to hard-switched converters, soft-switched converters, and series resonant converters. Two SVM modifications are proposed for a??not so fasta?? fast variables. Model predictions are verified either through PSPICE simulation or analytically.
URI: http://scholarbank.nus.edu.sg/handle/10635/13729
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
NgPohKeong_MENG_Final.pdf800.86 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

247
checked on Dec 18, 2017

Download(s)

4,110
checked on Dec 18, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.