Title: Modelling and simulation of a carrier-based PWM voltage source inverter for a nine-phase induction machine drive

Authors: O.D. Momoh

Addresses: CEIT Department, College of Engineering, Technology and Computer Science, Indiana University-Purdue University Fort Wayne (IPFW), IN 46805, USA

Abstract: The analysis of a carrier-based PWM two-level voltage source inverter for a nine-phase induction machine drive system is presented in this paper. Methods for generating zero-sequence signals during balanced and unbalanced condition are established. Simulation results for the analysis are presented. Two fault conditions involving the voltage source inverter and the nine-phase squirrel cage induction machine load are investigated. For the two fault scenarios considered, the effects on the performance characteristics of the induction machine load are highlighted. The simulation results obtained show that the two imbalance conditions considered result in substantial oscillations on the electromagnetic torque of the machine with attendant reduction in the torque rating. There is also large slip in the rotor speed.

Keywords: multiphase machines; voltage source inverters; existence function; modulation signal; open-phase faults; common-node zero-sequence signals; harmonic injections; energy conversion; pulse width modulation; modelling; simulation; carrier-based PWM; induction machine drives; oscillations; electromagnetic torque; torque rating; rotor speed.

DOI: 10.1504/IJPEC.2015.069436

International Journal of Power and Energy Conversion, 2015 Vol.6 No.2, pp.128 - 147

Received: 23 Nov 2013
Accepted: 19 Jun 2014
Published online: 16 May 2015 *

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