that in the end of the first zone or in the middle of the second zone, distance relay could not make a correct decision for operating if the fault occurs with arc. So to overcome this problem, in this paper a novel technique using total harmonic distortion (THD...

In this paper, a single-phase multilevel AC/AC converter with reduced number of power semiconductor devices is proposed. For the simple case of a three level converter, only three bidirectional switches and two capacitors ...