A simple passive auxiliary circuit for reduction of losses and efficiency enhancement of synchronous buck converter

Author

Kumar, Sahoo Subhendu ; Panda, Anup Kumar ; Ramesh, T.

Author_Institution

Dept. of Electr. Eng., NIT Rourkela, Rourkela, India

fYear

2013

fDate

13-15 Dec. 2013

Firstpage

1

Lastpage

6

Abstract

In this paper, a Zero-Voltage-Transition (ZVT) Pulsewidth Modulated (PWM) synchronous buck converter (SBC), with a simple passive auxiliary circuit is proposed, which reduces the stresses and improves the efficiency by pacifying the conduction losses compared to a traditional PWM converter, typically suitable for photovoltaic applications. The important design feature of ZVT-PWM SBC converters is placement of resonant components that mollifies the conduction losses. Due to the ZVT, the resonant components with low values are used thereby resulting in the increase of switching frequency. The zero-voltage-transition operation of the proposed converter is presented through theoretical analysis. The characteristics of the proposed converter are verified with the simulation in the PSIM cosimulated with MATLAB/SIMULINK environment.

Keywords

PWM power convertors; passive networks; resonant power convertors; zero voltage switching; PSIM; ZVT-PWM SBC converter; conduction loss reduction; passive auxiliary circuit; photovoltaic application; pulsewidth modulated SBC; resonant component; switching frequency; synchronous buck converter efficiency enhancement; zero-voltage-transition operation; Capacitors; Inductors; Pulse width modulation; RLC circuits; Snubbers; Switches; Switching loss; Photovoltaic; Zero Voltage Transition (ZVT); pulse width modulation (PWM); synchronous buck converter;

fLanguage

English

Publisher

ieee

Conference_Titel

India Conference (INDICON), 2013 Annual IEEE

Conference_Location

Mumbai

Print_ISBN

978-1-4799-2274-1

Type

conf

DOI

10.1109/INDCON.2013.6725991

Filename

6725991