Programmable Device Circuits and Systems

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Sine Multicarrier SPWM Technique for Seven Level Cascaded Inverter


Affiliations
1 Kamaraj College of Engineering and Technology in Anna University, Viruthunagari, Tamilnadu, India
2 Raja College of Engineering and Technology, Madurai, Tamilnadu, India
     

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In this paper, novel pulse width modulation control strategies which use sine carrier waveform is proposed for seven-level cascaded inverter. In sine carrier waveform, different control strategies such as phase disposition (PD) and inverted phase disposition (IPD) are implemented. The proposed control strategies improve the total harmonic distortion and enhance the fundamental component of the output voltage. The fundamental output voltage and harmonics obtained in each method are compared with each other. The different PWM techniques adopting the constant switching frequency multicarrier are simulated for a 2KW, 3φ inverter using MATLAB/SIMULINK. The effect of switching frequency on the harmonics and fundamental output voltage are also analyzed.

Keywords

Sine Multicarrier SPWM (SMC SPWM), Sinusoidal Pulse Width Modulation (SPWM), Total Harmonic Distortion (THD).
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  • Sine Multicarrier SPWM Technique for Seven Level Cascaded Inverter

Abstract Views: 183  |  PDF Views: 3

Authors

R. Rameshkumar
Kamaraj College of Engineering and Technology in Anna University, Viruthunagari, Tamilnadu, India
R. Nagarajan
Raja College of Engineering and Technology, Madurai, Tamilnadu, India

Abstract


In this paper, novel pulse width modulation control strategies which use sine carrier waveform is proposed for seven-level cascaded inverter. In sine carrier waveform, different control strategies such as phase disposition (PD) and inverted phase disposition (IPD) are implemented. The proposed control strategies improve the total harmonic distortion and enhance the fundamental component of the output voltage. The fundamental output voltage and harmonics obtained in each method are compared with each other. The different PWM techniques adopting the constant switching frequency multicarrier are simulated for a 2KW, 3φ inverter using MATLAB/SIMULINK. The effect of switching frequency on the harmonics and fundamental output voltage are also analyzed.

Keywords


Sine Multicarrier SPWM (SMC SPWM), Sinusoidal Pulse Width Modulation (SPWM), Total Harmonic Distortion (THD).