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Stability and transient performance assessment in a COTS-module-based distributed DC/DC system

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5 Author(s)
Vesti, S. ; Centro de Electron. Inductrial, Univ. Politec. de Madrid, Madrid, Spain ; Oliver, J.A. ; Prieto, R. ; Cobos, J.A.
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This paper introduces a method to analyze and predict stability and transient performance of a distributed system where COTS (Commercial-off-the-shelf) modules share an input filter. The presented procedure is based on the measured data from the input and output terminals of the power modules. The required information for the analysis is obtained by performing frequency response measurements for each converter. This attained data is utilized to compute special transfer functions, which partly determine the source and load interactions within the converters. The system level dynamic description is constructed based on the measured and computed transfer functions introducing cross-coupling mechanisms within the system. System stability can be studied based on the well-known impedance- related minor-loop gain at an arbitrary interface within the system.

Published in:

Telecommunications Energy Conference (INTELEC), 2011 IEEE 33rd International

Date of Conference:

9-13 Oct. 2011

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