Title: Implementation of PWM technique with soft starting algorithm for three-phase induction motor drives

Authors: Rajan Vinodray Vamja; Rakesh Maurya; Shaikh Mohammed Suhel

Addresses: Sardar Vallabhbhai National Institute of Technology, Surat-395007, India ' Sardar Vallabhbhai National Institute of Technology, Surat-395007, India ' Sardar Vallabhbhai National Institute of Technology, Surat-395007, India

Abstract: In this paper, a study on issues related to starting of induction motor is carried out. Performance comparisons of various starting methods are also studied. To investigate the performance of ramp soft starting algorithm, sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM) techniques are implemented with voltage source inverter (VSI) fed induction motor. Detailed FFT analysis of stator voltage and current of induction motor is studied under wide range of speed variations. Based on experimental study, few recommendations for implementation of boost start-up and s-curve start-up algorithm in Microcontroller (STM32F407VG) are made for high inertial load. Experimental results are obtained and its performance analysis in view of FFT of motor current is also carried out for aforesaid PWM techniques.

Keywords: soft starting; adjustable speed drive; ASD; sinusoidal pulse width modulation; SPWM; space vector pulse width modulation; SVPWM; control voltage source inverter; boost start-up; torque; synchronous PWM; asynchronous PWM.

DOI: 10.1504/IJPEC.2020.110012

International Journal of Power and Energy Conversion, 2020 Vol.11 No.4, pp.333 - 351

Accepted: 22 May 2019
Published online: 01 Oct 2020 *

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