Paper Details: Downloads: 757
Serial Number: P1111026154
Title: Hybrid PWM Algorithm with Low Computational Overhead for Vector Controlled Induction Motor Drive for Reduced Current ripple
Authors: K. Satyanarayana1 and J. Amarnath2, and A. Kailasa Rao1
Abstract: This paper presents an analytical approach for the analysis of the current ripple in space vector based PWM controlled induction motor drives. This paper considers seven different types of switching sequences. By using the instantaneous ripple voltages, the current ripple expressions are derived for all the sequences. To reduce the complexity involved in the conventional space vector approach, the proposed sequences and ripple analysis has been carried out using the concept of imaginary switching times. Finally, to reduce the current ripple, hybrid PWM (HPWM) algorithm has been developed which uses a sequence where it results in the lowest rms current ripple over the given sampling time interval. The proposed HPWM algorithm leads to reduction in current ripple at all modulation indices. To validate the proposed HPWM algorithm, numerical simulation studies have been carried out and compared with the conventional space vector PWM (CSVPWM) algorithm.
Keywords: current ripple, hybrid PWM, Induction motor, SVPWM.
Journal/Conference: International Journal of Automatic Control and System Engineering
Volume: 10
Issue: 2
Submission Date: 6/21/2010 12:00:00 AM
Review Date: 9/8/2010 12:00:00 AM
Publishing Date: 9/21/2010 12:00:00 AM
Article Downloads: 757
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