Abstract
This paper presents the solution for odd and even number of switching angles of harmonic elimination pulse width modulation (HEPWM). HEPWM capable to eliminate low order harmonics of inverter output voltage by solving the transcendental equation of the switching angles. The optimum switching angles are calculated using differential evolution (DE) algorithm. DE is simple and effective algorithm. The calculated switching angles applied to the three-phase voltage source inverter (VSI) and harmonic performance of output voltage are examined using MATLAB/Simulink software. The Total harmonic Distortion (THD) of line to neutral of inverter is analyzed for different number of switching angles. The simulation result showed that the low order harmonics, namely 5th, 7th, 11th, 13th, 17th, 19th, 23th was eliminated individually by N=3,4,5,6,7 and 8.
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