Event Details
Interleaved Two-Switch Forward Converter: Analysis, Design, Simulation and Experimental Results
Presenter: Daniel Figueira S.
Supervisor: Dr. Ashoka K. S. Bhat
Date: Tue, November 12, 2013
Time: 09:00:00 - 00:00:00
Place: EOW 230
ABSTRACT
Abstract:
The analysis and design of an interleaved hard-switched two-switch forward converter that uses a single inductor output filter switch-mode power supply (SMPS) is presented. Dc-dc SMPS are extensively used in electronic applications requiring high-efficiency, smaller size and lighter weight power supplies, e.g., alternative energy and telecommunication applications. The input voltage is a variable dc supply while the load power also changes widely. Open-loop pulse-width modulation (PWM) control is used in order to understand how the converter regulates the output voltage in response to load and input voltage variations.
The converter operates in six different intervals and equations for each interval are derived based on equivalent circuits. Expressions for selecting various components are derived. A design example of 200 W converter operating with 40 to 50 V input and 100 V output switching at 20 kHz is given to illustrate the design procedure. A systematic method to calculate the efficiency of the designed converter is given. The designed converter performance is verified from PSIM simulations and a prototype built in the laboratory.