Modeling & Simulation of Multi-Pulse Converters for Harmonic Reduction

This research paper deals with the reduction of Total Harmonic Distortion using Multi-pulse AC to DC Conversion scheme. The three-phase multi-pulse AC to DC conversion system employs a phase-shifting transformer and a three-phase. Every such converter provides 6-pulse AC to DC conversion, so in order to produce more sets of 6-pulse systems, a uniform phase-shift is required and hence with proper phase-shifting angle, 12, 18, 24, 30, and higher pulse systems have been produced. The performance improvement of multi-pulse converter is achieved for total harmonics distortion (THD) in supply current, DC voltage ripples and form factor. All the simulations have been done for similar ratings for all the multi-pulse converters configurations. The results are obtained for both uncontrolled and controlled converters for R, RL and RC Load.