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# A Harmonic Elimination and Suppression Scheme for an Open-End Winding Induction Motor Drive

Mohapatra, Krushna K and Gopakumar, K and Somasekhar, VT and Umanand, L (2003) A Harmonic Elimination and Suppression Scheme for an Open-End Winding Induction Motor Drive. In: IEEE Transactions on Industrial Electronics, 50 (6). pp. 1187-1198.

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## Abstract

In this paper, a harmonic elimination and suppression scheme for a dual-inverter-fed open-end winding induction motor drive is presented. Two isolated dc-link sources with voltage ratio of approximately 1: 0.366 are required for the present drive. These two isolated dc links feeding two inverters to drive the open-end winding induction motor eliminate the triplen harmonic currents from the motor phase. The pulsewidth-modulation scheme proposed enables the cancellation of all the 5th- and 7th-order ($6_n$ \pm 1, where n = 1, 3, 5, 7 etc.) harmonic voltages and suppresses the 11th- and 13th-order harmonic voltage amplitudes in the motor phase voltage, in all modulation ranges. The next higher order harmonics present in the motor phase voltages are 23rd, 25th, 35th, 37th etc. ($6_n$ \pm 1, n = 4, 6, etc.). By using triangular carrier wave and proper modulating waves for each inverter, the open–end winding induction motor can be operated in the entire modulation range, eliminating all the $6_n$ \pm 1 harmonics (n = 1, 3, 5, 7 etc.) coupled with 11th and 13th harmonic suppression. The proposed scheme also gives a smooth transition to the overmodulation region.

Item Type: Journal Article ©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. harmonic elimination;harmonic suppression;open-end induction motor;pulsewidth-modulation (PWM) drive. Division of Electrical Sciences > Electronic Systems Engineering (Formerly, (CEDT) Centre for Electronic Design & Technology) 25 Aug 2008 19 Sep 2010 04:12 http://eprints.iisc.ernet.in/id/eprint/270

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