Pulse width modulation techniques for dual 3-phase VSI

Abstract

In this work, a comparative analysis of output voltage behaviour based on basic component of magnitude and total harmonic distortion was performed using an open-end winding with dual 2-L 3-phase voltage source inverter (VSI). In the comparison, two modulation techniques are used: pulse width modulation utilising space vector (SVPWM) and artificial neutral network (ANN). When compared to the SVPWM technique, the artificial neural network approach has the advantage of being incredibly quick to construct since it eliminates the requirement for direct trigonometric and non-linear function computation. Both techniques simplify region identification in sectors while also lowering the overall switching frequency of the dual 2-L 3-phase inverter and lowering computational complexity and costs, which is a benefit of dual 2-L inverter over multi-level inverter. The simulation results are compared with the help of the MATLAB/Simulink software (version 14a).