#shorts
This animation illustrates the synthesized waveform by a multilevel inverter that consists of 5 H-bridges with equal dc voltage. By changing the phase shift from 0 to 2*pi, the synthesized waveform and its spectrum vary accordingly.
Although the commonly chosen phase-shift angle is 2*pi/5 rad or 72 degrees, it is clear that other phase angles would achieve the same harmonic cancellation effect that results in the first cluster of harmonics are around 5 times the switching frequency.
The switching frequency of each H-bridge is chosen to be 1080 Hz and the fundamental frequency is 60 Hz.
Here is the Google Colab file for the Python script: https://lnkd.in/gTYRkUcx
#shorts #animation #inverter #powerelectronics #electricalengineering #electrical #education #pwm #engineering #python #google #googlecolab #vsi #modulation #pulsewidthmodulation #multilevel #H-bridge