Multilevel inverter for locomotive (WAP-7) using 3rd order harmonic injection method

The aim of this paper is to bring new contribution and new technology for locomotive especially for WAP-7. Recent advance technology was proposed on locomotive by ABB, ALSTOM, HITACHI, etc. but still there is a disturbance in converters by converting AC/DC/AC. This proposed topology called multilevel inverter using PIC reduces the total harmonic distortion and also while triggering the gates in inverter the shot circuiting between gates in locomotives was minimized. In his work a harmonic was injected to reduce the switching looses while trigger the switches called IGBT for inverter in locomotives. The simulation for multilevel inverter using harmonic injection method was carried out using MATLAB/SIMULINK and the hardware result is shown in this work.