New dc rail side soft-switching PWM dc-dc converter with high frequency planar transformer

This paper presents a new circuit topology of active edge resonant snubbers assisted half-bridge soft switching PWM inverter type dc-dc high power converter for DC bus feeding power plants. The proposed dc-dc power converter is composed of typical voltage source-fed half bridge high frequency PWM in...

Full description

Saved in:
Bibliographic Details
Main Authors: Sayed, Khairy, Morimoto, Keiki, Soon-Kurl Kwon, Nishida, Katsumi, Nakaoka, Mutsuo
Format: Conference Proceeding
Language:English
Subjects:
active edge resonant snubbers
Capacitors
dc rail
DC-DC power converter
Frequency conversion
high frequency transformer link
industrial arc welding
Inverters
Pulse width modulation
soft switching PWM
Switches
Zero voltage switching
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a new circuit topology of active edge resonant snubbers assisted half-bridge soft switching PWM inverter type dc-dc high power converter for DC bus feeding power plants. The proposed dc-dc power converter is composed of typical voltage source-fed half bridge high frequency PWM inverter with a high frequency planar transformer link in addition to input DC busline side power semiconductor switching devices for PWM control scheme and parallel capacitive lossless snubbers. The operating principle of the new DC-DC converter treated here is described by using switching mode equivalent circuits, together with its unique features. All the active power switches in the half-bridge arms and input DC buslines can achieve ZCS turn-on and ZVS turn-off commutation transitions. The total turn-off switching losses of the power switches can be significantly reduced. As a result, a high switching frequency IGBTs can be actually selected in the frequency range of 60 kHz under principle of soft switching. The performance evaluations of the experimental setup are illustrated practically. The effectiveness of this new converter topology is proved for low voltage and large current dc-dc power supplies as DC bus feeding from a practical point of view.
ISSN:2150-6078
DOI:10.1109/ICPE.2011.5944541