The power circuit of the three-phase inverter converts electrical power from DC to AC form using the electrical scheme shown in Figure 4.2. Considering that the two switches in each inverter phase operate in a complementary mode in order to avoid short-circuiting the DC source, the switching state of the power switches Sx, with x = 1, … , 6, can be represented by the switching signals Sa, Sb, and Sc defined as follows:
These switching signals define the value of the output voltages
where Vdc is the DC source voltage.
Considering the unitary vector , which represents the 120° phase displacement ...