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Review of Small-Signal Modeling Methods Including Frequency-Coupling Dynamics of Power Converters.
- Source :
-
IEEE Transactions on Power Electronics . Apr2019, Vol. 34 Issue 4, p3313-3328. 16p. - Publication Year :
- 2019
-
Abstract
- Over the past years, the linearized modeling techniques for power converters have been continuously developed to capture the small-signal dynamics beyond half the switching frequency. This paper reviews and compares the small-signal modeling approaches based on a buck converter with voltage-mode control. The study includes the small-signal averaged modeling approach, the describing function method, and the harmonic state-space modeling approach, in order to be able to better select the correct method when modeling and analyzing a power electronic circuit as well as a power-electronic-based power system. The model comparison points out that the describing-function-based models do improve the modeling accuracy beyond the half-switching frequency of the converter, yet they fail to predict the frequency-coupling interactions (e.g., beat frequency oscillations) among multiple converters, and instead, harmonic state-space models in the multiple-input multiple-output form are required. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ELECTRIC inductance
*DC-to-DC converters
Subjects
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 34
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 135356456
- Full Text :
- https://doi.org/10.1109/TPEL.2018.2848980