Title | Realization of parasitics in state-space average-value modeling of PWM DC-DC converters |
Publication Type | Journal Article |
Year of Publication | 2006 |
Authors | Davoudi, A., and J. Jatskevich |
Journal | Power Electronics, IEEE Transactions on |
Volume | 21 |
Pagination | 1142 - 1147 |
Date Published | jul. |
ISSN | 0885-8993 |
Keywords | DC-DC power convertors, nonlinear waveforms, numerical analysis, piecewise linear waveforms, pulsewidth converters, PWM DC-DC converters, PWM power convertors, state-space average-value modeling |
Abstract | Analytical average-value modeling of pulsewidth modulation dc-dc converters is usually based on the piece-wise linear waveforms of the circuit variables and neglects the parasitics that give rise to waveform nonlinearities and complicate model derivation. This letter presents a straightforward but powerful methodology that considers the true averaging of nonlinear waveforms and produces a fairly accurate large-signal transient model that is functional in both operational modes. Based on the proposed modeling approach, a fast procedure for extracting the small-signal frequency-domain characteristics is set forth. The key model parameters are established numerically using the detailed simulation, which streamlines the analysis. The resulting average-value model is validated with a hardware prototype, a detailed simulation, and several previously established models in time and frequency domains. |
URL | http://dx.doi.org/10.1109/TPEL.2006.879048 |
DOI | 10.1109/TPEL.2006.879048 |