Analysis and Approximation of THD and Torque Ripple of Induction Motor for SVPWM Control of VSI

Grzegorz Sieklucki (), Sylwester Sobieraj, Józef Gromba and Raluca-Elena Necula
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Grzegorz Sieklucki: Department of Power Electronics and Automation of Energy Transformation Systems, AGH University of Science and Technology, 30-059 Krakow, Poland
Sylwester Sobieraj: Department of Power Electronics and Automation of Energy Transformation Systems, AGH University of Science and Technology, 30-059 Krakow, Poland
Józef Gromba: Department of Power Electronics and Automation of Energy Transformation Systems, AGH University of Science and Technology, 30-059 Krakow, Poland
Raluca-Elena Necula: Department of Automation and Electrical Engineering, Dunărea de Jos University of Galați, 800146 Galati, Romania

Energies, 2023, vol. 16, issue 12, 1-22

Abstract: This article presents a harmonic analysis of the stator currents of a squirrel-cage induction motor fed by a voltage source inverter with PWM space vector control (SVPWM). The influence of PWM switching frequency and dead time (dead band) of controlled transistors on THD and electromagnetic torque ripple is shown. The aim is to determine the lowest switching frequency of the transistors for which the drive will operate correctly. Characteristics were determined as functions in the form of THD ( f P W M ), where the least square approximation was used for stator current measurements when the PWM switching frequency was changed. The approximations were realized for simulation and experimental results. To clarify the results, the operation of hardware PWM circuits in microcontrollers is analyzed.

Keywords: induction motor; PWM control; SVPWM; THD; torque ripple; approximation; voltage source inverter; dead band; electromagnetic torque; stator current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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