Selective Harmonic Elimination Technique Based Cascaded Multilevel Inverter with Reduced Number of Switches

N.Karthika, R.Rajalakshmi, S. Deepika, T.Shalini

Abstract: This paper presents a topology with a reduced number of switches, which is used to reduce the total harmonic distortion (THD %) using MCPWM technique, MCPWM with trapezoidal reference wave and also SHE technique such as PSO technique and Newton-Raphson (NR) technique. SHE technique is used to eliminate a particular harmonic in a multilevel inverter (MLI), the MCPWM and Trapezoidal reference wave techniques are also used to reduce the harmonics present in the MLI with a triangular wave which acts as a carrier wave. This topology is also used to improve the multilevel performance. The performance evaluation of the proposed PWM, Trapezoidal reference wave and SHE techniques for a MLI is done by using MATLAB/Simulink and THD is analysed. It is observed that PSO technique produces a better fundamental voltage output and less THD.

Keywords: Multicarrier Pulse Width Modulation MCPWM, Selective Harmonic Elimination SHE, Particle Swarm Optimization PSO, Newton-Raphson NR and Total Harmonic Distortion THD

How to Cite?: N.Karthika, R.Rajalakshmi, S. Deepika, T.Shalini, "Selective Harmonic Elimination Technique Based Cascaded Multilevel Inverter with Reduced Number of Switches", Volume 5 Issue 3, March 2016, International Journal of Science and Research (IJSR), Pages: 2177-2181, https://www.ijsr.net/getabstract.php?paperid=NOV162392, DOI: https://dx.doi.org/10.21275/NOV162392