A basic three-phase inverter consists of three single-phase inverter switches each connected
to one of the three load terminals. For the most basic control scheme, the operation of the three switches is
coordinated so that one switch operates at each 60 degree point of the fundamental output waveform.
This creates a line-to-line output waveform that has six steps.
The six-step waveform has a zero-voltage step between the positive and negative sections of the