Soft-Switching High Static Gain DC-DC Converter Without Auxiliary Switches

The development of a high static gain dc-dc converter with the integration of the voltage multiplier cell and the coupled inductors operating with soft switching is presented in this paper. The use of coupled inductors and voltage multiplier techniques allow the operation with low switch voltage and...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2018-03, Vol.65 (3), p.2335-2345
Main Authors: Breus Meier, Martin, da Silva, S. Avelino, Badin, Alceu Andre, Ribeiro Romaneli, Eduardo Felix, Gules, Roger
Format: Article
Language:English
Subjects:
Capacitors
Circuits
Commutation
Conduction losses
DC–DC power conversion
Diodes
Electric potential
Energy conversion efficiency
Inductance
Inductors
Leakage
Semiconductor diodes
soft switching
switched circuits
Switches
Switching
voltage multipliers
Zero current switching
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Summary:The development of a high static gain dc-dc converter with the integration of the voltage multiplier cell and the coupled inductors operating with soft switching is presented in this paper. The use of coupled inductors and voltage multiplier techniques allow the operation with low switch voltage and low conduction losses. The switch turn-on commutation occurs with zero current switching due to the presence of the coupled-inductor leakage inductance. The leakage inductance also reduces the reverse recovery current of all diodes. The zero voltage switching at the power switch turn-off is obtained with the inclusion of only a diode and a snubber capacitor per phase, without the use of auxiliary switches. The soft-switching range is independent of the load and is maintained even with a light load. The theoretical analysis, design procedure, and experimental results are presented in this paper. A two-phase boost converter with one voltage multiplier and coupling inductors was built with an input voltage V in = 24 V, output voltage V o = 432 V, and output power P o = 400 W. The efficiency obtained is equal to 94.55% at the nominal power.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2739684