A study of novel ZVZCS PWM Buck converter

Author

Gendi, Lv ; Yueqing, Zhou

Author_Institution

Sch. of Electr. Eng. & Autom., Tianjin Univ., Tianjin, China

fYear

2011

fDate

16-18 April 2011

Firstpage

62

Lastpage

65

Abstract

It is difficult to improve power capacity and switch frequency of the conventional switching power system because of so many drawbacks resulting from the hard switching state of power switches such as the losses and the diode reverse recovery problem and so on. In this paper, a novel ZVZCS (Zero Voltage Zero Current Switching) PWM (Pulse Width Modulation) Buck converter is proposed. A detailed analysis of the operation principle and MATLAB 7.0 simulation results show that both the main switch and the main diode are turned on and off under ZVZCS simultaneously, the auxiliary switch is turned on and off under Zero Current Switching (ZCS), and the soft chopper is suitable for application working in high frequency and high power situation.

Keywords

PWM power convertors; choppers (circuits); switching convertors; zero current switching; zero voltage switching; MATLAB 7.0 simulation results; ZVZCS PWM buck converter; auxiliary switch; conventional switching power system; diode reverse recovery problem; hard switching state; power capacity; power switches; soft chopper; switch frequency; zero voltage zero current switching PWM buck converter; Capacitance; Converters; Inductance; Pulse width modulation; Switches; Zero current switching; PWM Buck converter; ZVZCS; soft chopper;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768576

Filename

5768576