Optimal Pulse Width Modulation of Voltage-Source Inverter fed Motor Drives with Relaxation of Quarter Wave Symmetry Condition

Tripathi, Avanish and Narayanan, G (2014) Optimal Pulse Width Modulation of Voltage-Source Inverter fed Motor Drives with Relaxation of Quarter Wave Symmetry Condition. In: 2014 IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, COMPUTING AND COMMUNICATION TECHNOLOGIES (IEEE CONECCT) .

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Abstract

Optimal switching angles for minimization of total harmonic distortion of line current (I-THD) in a voltage source inverter are determined traditionally by imposing half-wave symmetry (HWS) and quarter-wave symmetry (QWS) conditions on the pulse width modulated waveform. This paper investigates optimal switching angles with QWS relaxed. Relaxing QWS expands the solution space and presents the possibility of improved solutions. The optimal solutions without QWS are shown here to outperform the optimal solutions with QWS over a range of modulation index (M) between 0.82 and 0.94 for a switching frequency to fundamental frequency ratio of 5. Theoretical and experimental results are presented on a 2.3kW induction motor drive.

Item Type:	Journal Article
Publication:	2014 IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, COMPUTING AND COMMUNICATION TECHNOLOGIES (IEEE CONECCT)
Series.:	IEEE International Conference on Electronics Computing and Communication Technologies
Publisher:	IEEE
Additional Information:	Copy right for this article belongs to the IEEE International Conference on Electronics, Computing and Communication Technologies (IEEE CONECCT), Indian Inst Sci, Bangalore, INDIA, JAN 06-07, 2014
Keywords:	Harmonic analysis; harmonic distortion; induction motor drive; optimal pulse width modulation; voltage-source inverter; waveform symmetry
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	01 Apr 2015 12:17
Last Modified:	01 Apr 2015 12:17
URI:	http://eprints.iisc.ac.in/id/eprint/51171

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