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Comparative Analysis of PWM Overmodulation Techniques in Three Phase Two Level Voltage Source Inverter
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In a conventional voltage source converter (VSC), the frequency of output waveforms is controllable but the fundamental output voltage and RMS output voltage are not controllable, to mitigate this problem pulse width modulation (PWM) technique was introduced. Overmodulation sinusoidal PWM (SPWM) technique used to increase the utilization of DC bus (UDB) and improve output voltage of the inverter. This paper Compares and analyzes the voltage gain characteristics and waveform quality of four types of carrier-based SPWM methods in the overmodulation region. Comparison is made between conventional SPWM with over modulated SPWM, flat-topped SPWM, min-max SPWM, zero sequences third harmonic SPWM, Third harmonic injection Space vector PWM (THI SVPWM) for three-phase two-level voltage source inverter (VSI) by varying the amplitude modulation index.
Title: Comparative Analysis of PWM Overmodulation Techniques in Three Phase Two Level Voltage Source Inverter
Description:
In a conventional voltage source converter (VSC), the frequency of output waveforms is controllable but the fundamental output voltage and RMS output voltage are not controllable, to mitigate this problem pulse width modulation (PWM) technique was introduced.
Overmodulation sinusoidal PWM (SPWM) technique used to increase the utilization of DC bus (UDB) and improve output voltage of the inverter.
This paper Compares and analyzes the voltage gain characteristics and waveform quality of four types of carrier-based SPWM methods in the overmodulation region.
Comparison is made between conventional SPWM with over modulated SPWM, flat-topped SPWM, min-max SPWM, zero sequences third harmonic SPWM, Third harmonic injection Space vector PWM (THI SVPWM) for three-phase two-level voltage source inverter (VSI) by varying the amplitude modulation index.
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