PROJECT TITLE :

Effect of circulating current on input linecurrent of 12-pulse rectifier with activeinter-phase reactor - 2016

ABSTRACT:

This study analyses quantitatively the result of circulating current's amplitude and phase on the input line current of 12-pulse rectifier with active inter-phase reactor. The input line current and its total harmonic distortion (THD) are calculated below completely different amplitudes and phases of circulating current, and consistent with the calculation results, the impact of circulating current is analysed. Different from the previous results, it's obtained that the system has higher performance when the amplitude of circulating current is slightly less than, however not equal to the 0.5 of load current. Both part lagging and leading increase the THD of input line current. Some simulation and experiment are applied to validate the theoretical analysis.