A studies on variation modulation index towards SPWM unipolar inverter

Inverter is an electrical system or circuitry that converts direct current (DC) to alternating current (AC). The inverter output voltage and frequency can be modified. There are various modulation techniques used to power the inverter. Some of these techniques can be used online, some analogously. C...

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Bibliographic Details
Main Authors: Yumi, K. M., Ilham, S. M., Yusof, A. M., Kimpol, N., Habibah, H. M.
Format: Conference Proceeding
Language:English
Subjects:
Alternating current
Circuits
Direct current
Fourier analysis
Harmonic analysis
Inverters
Line voltage
Pulse duration modulation
Sine waves
Switching
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Summary:Inverter is an electrical system or circuitry that converts direct current (DC) to alternating current (AC). The inverter output voltage and frequency can be modified. There are various modulation techniques used to power the inverter. Some of these techniques can be used online, some analogously. Classical Sinusoidal Pulse Width Modulation (SPWM) is a system that is usually implemented analogously. Standard sampled sinusoidal PWM methods are known methods for digital implementation of this method. The implementation of the symmetrical standard sampled sinusoidal PWM approach is discussed in this review. Two fundamental factors that are efficient in this form of modulation system are explored through the harmonious study of the switching frequency and modulation index, the inverter pole voltage, and the line voltage. The fundamental part and the produced harmonics are investigated from an inverter that supplies a three-phase RL load using the Symmetric Regular Sampled SPWM system with five different switching frequencies and three different modulation index values. The Modulation Index is studied for linear regions and for modulation regions. The low, medium and high switching frequency samples are also picked for the switching frequency. The findings of the harmonic analysis obtained are discussed in the report.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0151365