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Design of Space Vector-Based Hybrid PWM Techniques for Reduced Current Ripple

Krishnamurthy, H and Narayanan, G and Ayyanar, R and Ranganathan, VT (2003) Design of Space Vector-Based Hybrid PWM Techniques for Reduced Current Ripple. In: IEEE Applied Power Electronics Conference and Exposition - APEC '03, Feb 2003, Miami, Florida, USA, pp. 583-588.


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Switching sequence used by conventional space vector PWM (CSVPWM) involves equal division of zero vector time between the two zero states in every subcycle. The sequences employed by bus-clamping PWM involve use of only one zero state in a subcycle. This paper deals with two sequences, which use only one zero state and involve division of active vector time within a subcycle. A novel hybrid PWM technique, employing these two sequences in conjunction with the conventional sequence, is proposed. The proposed PWM technique is designed using the notion of stator flux ripple. A procedure is presented for the design of hybrid PWM technqiues involving multiple sequences for reduced current ripple. The proposed PWM technique results in reduced current ripple over CSVPWM at higher modulation indices. Experimental results on a 2hp prototype induction motor drive are presented.

Item Type: Conference Paper
Additional Information: �©2003 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
Keywords: Pulse width modulation (PWM);PWM inverters;space vector;space vector PWM;hybrid PWM;switching sequences;stator flux ripple;harmonic distortion;variable speed drives;AC drives;induction motor drives
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 26 Jul 2005
Last Modified: 19 Sep 2010 04:19
URI: http://eprints.iisc.ac.in/id/eprint/3386

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