Publication detail

On the Validity of SSA-based Models of DC-DC Converters

BIOLKOVÁ, V. KOLKA, Z. BIOLEK, D.

Original Title

On the Validity of SSA-based Models of DC-DC Converters

English Title

On the Validity of SSA-based Models of DC-DC Converters

Type

conference paper

Language

en

Original Abstract

State-space averaging (SSA) belongs to commonly used techniques of modeling switched DC-DC converters. In the paper, an analysis of the accuracy of line-to-output (LTO) frequency responses, obtained by applying the SSA technique to switched converters, is performed. A method of simple computation of the Fourier components of signals of the converter with single-tone excitation and operating in the continuous current mode with unmodulated duty ratio is described. This method is used for determining the frequency dependence of the spectral term at the frequency of the input signal. This dependence is then compared with the LTO frequency response which is obtained from the SSA method. These comparisons are made for Buck-, Boost-, and Buck-Boost- type converters. Conclusions about the accuracy of the SSA outputs are drawn within the context of the character of the state matrices of the converter.

English abstract

State-space averaging (SSA) belongs to commonly used techniques of modeling switched DC-DC converters. In the paper, an analysis of the accuracy of line-to-output (LTO) frequency responses, obtained by applying the SSA technique to switched converters, is performed. A method of simple computation of the Fourier components of signals of the converter with single-tone excitation and operating in the continuous current mode with unmodulated duty ratio is described. This method is used for determining the frequency dependence of the spectral term at the frequency of the input signal. This dependence is then compared with the LTO frequency response which is obtained from the SSA method. These comparisons are made for Buck-, Boost-, and Buck-Boost- type converters. Conclusions about the accuracy of the SSA outputs are drawn within the context of the character of the state matrices of the converter.

Keywords

switched DC-DC converter, averaging, SSA, spectrum, LTO frequency response

RIV year

2009

Released

14.12.2009

Publisher

WSEAS

Location

Puerto de la Cruz, Spain

ISBN

978-960-474-139-7

Book

Proc. of the 8th WSEAS Int. Conference on Circuits, Systems, Electronics, Control&Signal Processing (CSECS'09)

Pages from

202

Pages to

207

Pages count

6

BibTex


@inproceedings{BUT31252,
  author="Viera {Biolková} and Zdeněk {Kolka} and Dalibor {Biolek}",
  title="On the Validity of SSA-based Models of DC-DC Converters",
  annote="State-space averaging (SSA) belongs to commonly used techniques of modeling switched DC-DC converters. In the paper, an analysis of the accuracy of line-to-output (LTO) frequency responses, obtained by applying the SSA technique to switched converters, is performed. A method of simple computation of the Fourier components of signals of the converter with single-tone excitation and operating in the continuous current mode with unmodulated duty ratio is described. This method is used for determining the frequency dependence of the spectral term at the frequency of the input signal. This dependence is then compared with the LTO frequency response which is obtained from the SSA method. These comparisons are made for Buck-, Boost-, and Buck-Boost- type converters. Conclusions about the accuracy of the SSA outputs are drawn within the context of the character of the state matrices of the converter.",
  address="WSEAS",
  booktitle="Proc. of the 8th WSEAS Int. Conference on Circuits, Systems, Electronics, Control&Signal Processing (CSECS'09)",
  chapter="31252",
  howpublished="electronic, physical medium",
  institution="WSEAS",
  year="2009",
  month="december",
  pages="202--207",
  publisher="WSEAS",
  type="conference paper"
}