Please use this identifier to cite or link to this item: https://doi.org/10.1109/TIE.2013.2259784
Title: Small-signal modeling of active-clamped ZVS current-fed full-bridge isolated DC/DC converter and control system implementation using PSoC
Authors: Prasanna, U.R.
Rathore, A.K. 
Keywords: Active clamp
closed-loop control
current-fed dc/dc converter
high frequency (HF)
small-signal model (SSM)
Issue Date: 2014
Source: Prasanna, U.R., Rathore, A.K. (2014). Small-signal modeling of active-clamped ZVS current-fed full-bridge isolated DC/DC converter and control system implementation using PSoC. IEEE Transactions on Industrial Electronics 61 (3) : 1253-1261. ScholarBank@NUS Repository. https://doi.org/10.1109/TIE.2013.2259784
Abstract: The small-signal analysis of an active-clamped zero-voltage-switching current-fed isolated dc/dc converter is presented in this paper. State-space averaging is used to derive the small-signal model. A closed-loop controller is designed to regulate the converter output over a wide range of power (1 : 10) and source voltage (1 : 2) with fixed frequency duty cycle modulation. Bode plots are presented using MATLAB and PSIM 9.0 to show the frequency response of the converter with and without a controller. The designed controller is implemented on the mixed-signal (analog and digital) processor Cypress Programmable System-on-Chip (PSoC) 5. All components are integrated in Cypress PSoC 5 which is compact, economical, and easily configurable. A 300-W converter prototype is developed and tested with the implemented controller to observe the performance of the system. Experimental results for step change in load for different input voltage conditions show the high performance of the controller, satisfactory transient performance of the converter, and voltage regulation with continued safe operation. © 1982-2012 IEEE.
Source Title: IEEE Transactions on Industrial Electronics
URI: http://scholarbank.nus.edu.sg/handle/10635/57434
ISSN: 02780046
DOI: 10.1109/TIE.2013.2259784
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