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Design of a 1.2 kW Interleaved Synchronous Buck Converter for Retrofit Applications in Aviation Systems

Journal Article
01-13-02-0015
ISSN: 1946-3855, e-ISSN: 1946-3901
DOI: https://doi.org/10.4271/01-13-02-0015
Published October 19, 2020 by SAE International in United States
Design of a 1.2 kW Interleaved Synchronous Buck Converter for Retrofit Applications in Aviation Systems
Sector:
Citation: Sener, E., Yazar, I., Ertasgin, G., and Yamik, H., "Design of a 1.2 kW Interleaved Synchronous Buck Converter for Retrofit Applications in Aviation Systems," SAE Int. J. Aerosp. 13(2):197-211, 2020, https://doi.org/10.4271/01-13-02-0015.
Language: English

Abstract:

Presently, 270 V direct current (DC) systems replace older 28 V DC voltage systems in both the civil and military aviation industry due to the requirement for more electrical power needs on board. Therefore, the existing avionics require retrofitting. The conversion from 270 V to 28 V appears to be quite promising for both old and new systems. This study aims to design an interleaved synchronous modular buck converter topology as a candidate for these requirements. Calculations for the converter design are conducted considering aviation standards. Switching with pulse-width modulation (PWM) is used to control the power converter. A double-loop feedback control system based on voltage and current feedback is designed. Therefore, the buck converter circuit with 1145 W power output is proposed, which supplies a 28 V and 41 A DC output from a 270 V DC input. The concept is verified using simulations and hardware-in-the-loop (HIL) experimental results.