The Behaviour of Homogeneous NPT-IGBTs at Hard and Soft Switching

1 January 1996

journal article
research article
Published by Taylor & Francis in EPE Journal

Vol. 5 (3) , 23-31
https://doi.org/10.1080/09398368.1996.11463370

Abstract

At present, power converter systems with d.c.-link on the basis of hard switching dominate in the field of power electronics. However, higher switching frequencies are necessary to reduce the noise as well as the size and weight of passive energy stores in a lot of applications. There are two ways to realize soft switching processes in principle: Zero-Current-Switching (ZCS) and Zero-Voltage-Switching (ZVS). The paper describes the behaviour of NPT-IGBTs at hard and soft switching (ZVS, ZCS). The internal processes of the Non-Punch-Through (NPT)-structure are analysed on the basis of a new very accurate PSpice IGBT model. Additional measurements show that NPT-IGBTs possess a very good behaviour under hard switching conditions. By contrary to that Punch-Through (PT)-IGBTs offer the best features at soft switching.

Keywords

This publication has 2 references indexed in Scilit:

IGBT turn-off losses for hard switching and with capacitive snubbers
Published by Institute of Electrical and Electronics Engineers (IEEE) ,2002
Stromrichtersysteme mit Wechselspannungszwischenkreis
Electrical Engineering, 1992