“…In high power applications such as medium voltage motor drives, solar cells, vehicles, and most recently, wind generation system, etc., multilevel topologies introduced in [1] have been widely applied to reduce harmonic in the grid current, to downsize the physical filter size, and to mitigate the switching losses of the used devices as compared with the conventional two-level pulse width modulation (PWM) inverter. These multilevel topologies allow the output voltage to be closer to the sinusoidal wave by increasing the number of voltage levels, and reducing the harmonic distortion, as reported in the literature [2][3][4]. The major multilevel topologies that have been studied are neutral point clamped (NPC) [5,6], active net point clamped (ANPC) [7][8][9], flying capacitor (FC) [10][11][12], and cascaded multilevel inverter (CMLI) [13,14].…”