Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Analysis and Approximation of THD and Torque Ripple of Induction Motor for SV-PWM Control of VSI

Version 1 : Received: 25 May 2023 / Approved: 26 May 2023 / Online: 26 May 2023 (12:02:00 CEST)

A peer-reviewed article of this Preprint also exists.

Sieklucki, G.; Sobieraj, S.; Gromba, J.; Necula, R.-E. Analysis and Approximation of THD and Torque Ripple of Induction Motor for SVPWM Control of VSI. Energies 2023, 16, 4628. Sieklucki, G.; Sobieraj, S.; Gromba, J.; Necula, R.-E. Analysis and Approximation of THD and Torque Ripple of Induction Motor for SVPWM Control of VSI. Energies 2023, 16, 4628.

Abstract

This article presents a harmonic analysis of the stator currents of a squirrel-cage in-15 duction motor fed by a voltage source inverter with PWM space vector control (SV-PWM). The 16 influence of PWM switching frequency and dead time (dead-band) of controlled transistors on 17 THD and electromagnetic torque ripple is shown. The aim is to determine the lowest switching 18 frequency of the transistors for which the drive will operate correctly. Characteristics were de-19 termined as functions in the form of THD ( ), where the least square approximation was 20 used for stator current measurements when the PWM switching frequency is changed. The ap-21 proximations were realized for simulation and experimental results. To clarify the results, the 22 operation of hardware PWM circuits in microcontrollers was analyzed.

Keywords

Induction motor; PWM control; SV-PWM; THD; torque ripple; approximation; voltage source inverter; dead-band; electromagnetic torque; stator current

Subject

Engineering, Electrical and Electronic Engineering

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