Novel zero-current-switching (ZCS) PWM switch cell minimizing additional conduction loss

Author

Choi, Hang-Seok ; Cho, Bo Hyung

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

49

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

165

Lastpage

172

Abstract

This paper proposes a new zero-current-switching (ZCS) pulsewidth modulation (PWM) switch cell that has no additional conduction loss of the main switch. In this cell, the main switch and the auxiliary switch turn on and turn off under zero-current condition. The diodes commutate softly and the reverse-recovery problems are alleviated. The conduction loss and the current stress of the main switch are minimized, since the resonating current for the soft switching does not flow through the main switch. Based on the proposed ZCS PWM switch cell, a new family of DC-to-DC PWM converters is derived. The new family of ZCS PWM converters is suitable for the high-power applications employing insulated gate bipolar transistors. Among the new family of DC-to-DC PWM converters, a boost converter was taken as an example and has been analyzed. Design guidelines with a design example are described and verified by experimental results from the 2.5 kW prototype boost converter operating at 40 kHz

Keywords

DC-DC power convertors; PWM power convertors; commutation; insulated gate bipolar transistors; losses; switching circuits; 2.5 kW; 40 kHz; DC-to-DC PWM converters; ZCS PWM switch cell; auxiliary switch; boost converter; conduction loss; conduction loss minimisation; current stress; diodes soft commutation; high-power applications; insulated gate bipolar transistors; main switch conduction loss; resonating current; soft switching; zero-current condition; DC-DC power converters; Diodes; Guidelines; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation converters; Space vector pulse width modulation; Stress; Switches; Zero current switching;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.982260

Filename

982260