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A No DC-Gain Error Small-Signal Model for the Zero-Voltage-Switching Phase-Shift-Modulated Full-Bridge DC-DC Converter

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2 Author(s)
Zanatta, C. ; Power Electron. & Control Res. Group, Santa Maria Fed. Univ. ; Pinheiro, J.R.

In this paper, an improved small-signal model for the zero-voltage-switching phase-shift-modulated full-bridge which eliminates the DC-gain errors of its line-to-output and control-to-output model transfer functions is presented. A DC-gain and a frequency response comparison among small-signal models are evaluated. The model presented here demonstrates to be accurate for different designs parameters, being it in a simple s-domain polynomial ratio form. Experimental frequency response demonstrates similar results with transfer functions responses of the improved model here presented

Published in:

IEEE Industrial Electronics, IECON 2006 - 32nd Annual Conference on

Date of Conference:

6-10 Nov. 2006