Analysis of an Induction Machine Fed by a Space Vector Modulated VSI

TL;DR

This paper analyzes the performance of a three-phase induction motor fed by a space vector modulated inverter, focusing on current ripple, spectral characteristics, and transient response through simulation studies.

Contribution

It provides a detailed simulation-based analysis of induction motor behavior under space vector modulation, highlighting effects of switching frequency and transient responses.

Findings

Switching frequency significantly affects current ripple.

Spectral analysis reveals characteristic frequency components.

Transient response differs notably from ideal AC feeding.

Abstract

This paper describes the analysis and simulation performed on a three phase squirrel cage induction motor, fed by a Voltage Source Inverter (VSI), modulated using the space vector modulation scheme. The study mainly focused on analyzing the motor performance when fed by a space vector modulated voltage source inverter. The effect of switching frequency on the motor current ripple as well as the frequency spectra of motor current, voltage and torque were studied. The transient response of the inverter-fed motor for a sudden load change was studied and compared to that of a motor fed with an ideal AC source. Results from these studies performed as computer simulations are presented and analyzed.