Title :
Unified design for ZVT PWM converters with resonant auxiliary circuit
Author :
Martins, M.L. ; Russi, J.L. ; Pinheiro, H. ; Pinheiro, J.R. ; Undling, H. A Gr ; Hey, H.L.
Author_Institution :
Power Electron. & Control Res. Group, Fed. Univ. of Santa Maria, Brazil
fDate :
5/8/2004 12:00:00 AM
Abstract :
Operation modes of zero-voltage transition (ZVT) PWM converters with resonant auxiliary circuit (RAC) are identified and analysed by means of a common topology. A novel state-plane approach is used to determine the soft-switching boundary for this sort of converter. A unified design criterion, based on the analytical definition of the soft-switching boundary, is described in detail. By means of the proposed criterion the time spent on repetitive numerical simulation of a given topology to define its design guidelines based on a set of particular features can be significantly reduced. The theoretical analysis is confirmed by means of experimental results obtained from ZVT-PWM boost converters, which operate at 1 kW, 100 kHz.
Keywords :
DC-DC power convertors; PWM power convertors; resonant power convertors; switching convertors; 1 kW; 100 kHz; ZVT PWM boost converter; numerical simulation; resonant auxiliary circuit; soft-switching boundary; state-plane approach; unified design criterion; zero-voltage transition converters;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:20040214
