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Effect of random noise on a DC-DC converter
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| Author(s) |
A. Sangswang; C. O. Nwankpa |
| Abstract |
Noise interacting with operating characteristics of a power electronic converter is of major
concern in power converter industry, being a contributor of system parameter uncertainties. These
uncertainties may significantly alter designed performance of the converter. This paper presents a
method that takes into account existing disturbances in a dc-dc boost converter. An analysis of the dcdc
converter influenced by uncertainties due to random noise is presented. Dynamics of the converter
system are modeled as a diffusion process meaning that the system will exhibit transitions between
stable states. Realistic disturbances can be modeled as white noise sources for all practical purposes.
However, the extension of white noise modeling is crucial for practical applications in power
electronic systems. In this paper, issues regarding to realistic converter modeling are investigated
through additive colored noise as opposed to white noise. We extend our work in this paper into
performance evaluation of a dc-dc converter under the presence of random colored noise. A concept
of mean first passage time of the system from its domain of attraction is defined as a performance
index. It represents the time for the trajectories to evolve from operating point to its domain of
attraction. |
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| Filename: | EPE2003-PP1030 - Sangswang |
| Filesize: | 335.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-22 by Unknown |
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