Protection and Switching-Aid Networks for Transistor Bridge Inverters

Rajashekara, KS and Joseph, Vithyathil and Rajagopalan, V (1986) Protection and Switching-Aid Networks for Transistor Bridge Inverters. In: IEEE Transactions on Industrial Electronics, 33 (2). pp. 185-192.

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Abstract

The present trend in the industry is towards the use of power transistors in the development of efficient Pulsewidth Modulated (PWM) inverters, because of their operation at high frequency, simplicity of turn-off, and low commutation losses compared to the technology using thyristors. But the protection of power transistors, minimization of switching power loss, and design of base drive circuit are very important for a reliable operation of the system. The requirements, analysis, and a simplified procedure for calculation of the switching-aid network components are presented. The transistor is protected against short circuit using a modified autoregulated and autoprotection drive circuit. The experimental results show that the switching power loss and voltage stress in the device can be reduced by suitable choice of the switching-aid network component values.

Item Type:	Journal Article
Publication:	IEEE Transactions on Industrial Electronics
Publisher:	IEEE
Additional Information:	Copyright 1986 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	01 Feb 2010 07:46
Last Modified:	19 Sep 2010 05:40
URI:	http://eprints.iisc.ac.in/id/eprint/22163

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