Title: Starting performance optimisation of two-leg AC voltage controller-fed three-phase induction motor drive

Authors: K. Nafeesa; Saly George

Addresses: Department of Electrical Engineering, National Institute of Technology Calicut, Kerala, 673601, India ' Department of Electrical Engineering, National Institute of Technology Calicut, Kerala, 673601, India

Abstract: This paper analyses the starting performance of two-leg AC voltage controller-fed three-phase induction motor drive and establishes that optimum value of firing angle combination for the voltage controller depends on the motor parameters. Identically rated machines with different motor parameters are used for the work. Optimum firing angle combination is obtained from the simulation, which gives zero negative torque pulsations with minimum acceleration time and other electrical characteristics like peak positive electrodynamic torque pulsations, peak starting current are having satisfactory values. Results show that cost effective two-leg controller is giving an improved performance with the optimum firing angle combination and is found to depend on motor parameters.

Keywords: AC voltage controllers; induction motor starting; optimum firing angle; parameter dependence; two-leg control; starting performance optimisation; three-phase induction motors; simulation; motor parameters.

DOI: 10.1504/IJPELEC.2013.057044

International Journal of Power Electronics, 2013 Vol.5 No.3/4, pp.236 - 247

Accepted: 26 May 2013
Published online: 06 Oct 2013 *

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