INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016
open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15
Cascaded H-Bridge and Novel Multilevel Inverter Topology for Induction Motor Drive
Authors Name:
Shaik Vali
, T Vinay Kumar
Unique Id:
IJSDR1604035
Published In:
Volume 1 Issue 4, April-2016
Abstract:
Present day drive types are the Induction motor drives with voltage source inverters. Also the voltage waveforms of traditional two level inverter fed Induction motor shows that the voltage across the motor contains not only the required “fundamental” sinusoidal components, but also pulses of voltage i.e. “ripple” voltage. Moreover the voltage waveforms produced by the inverter has sharp edges. The rate of change of voltage with respect to time i.e. dv/dt is very high at these edges, of the order of 500–5000 V/μs.The two-level inverter topology has attracted attention in low power low voltage drive applications where as Three-Level inverter topology has attracted attention in high power High performances voltage drive applications. Single-phase VSI cover low-range power applications and three-phase VSI cover the medium- to high-power applications. The Main purpose of these three level inverter topologies is to provide a three phase voltage source, where the amplitude, phase, and frequency of the voltages should always be controllable. Although most of the applications require sinusoidal voltage waveforms. The benefits are especially clear for medium-voltage drives in industrial applications and are being considered for future naval ship propulsion systems. The application of pulse width-modulated (PWM) voltages using two-level high-voltage inverters to a squirrel-cage induction motor (SQIM) can cause heating of rotor shaft, voltage spike across the motor terminals, etc. The increase in the number of steps of the motor voltage and hence decreasing the dv/dt applied to the machine terminals can be a solution to this problem. The existing topologies that generate this multistep voltage include cascading of a number of single-phase inverters or use of higher order multilevel inverters. In this paper, a topology with series connection of three-phase three-level inverters is proposed, which addresses the problems of medium-voltage drives.
Keywords:
Medium-voltage ac drives, multilevel converter topologies.
Cite Article:
"Cascaded H-Bridge and Novel Multilevel Inverter Topology for Induction Motor Drive", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.1, Issue 4, page no.220 - 226, April-2016, Available :http://www.ijsdr.org/papers/IJSDR1604035.pdf
Downloads:
000337072
Publication Details:
Published Paper ID: IJSDR1604035
Registration ID:160166
Published In: Volume 1 Issue 4, April-2016
DOI (Digital Object Identifier):
Page No: 220 - 226
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631
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