These transformations and the theta angle (voltage angle) are very critical for all the simulations in the project. To be sure that we have the correct angle, we created this angle first, then, a three phase voltage system is created according to this angle as we can see in the following block diagram.
Em will be the amplitude of the 3 phase voltages (amplitude invariant transformation).
Figure 0.2 : Three‐phase system simulation The transformations are implemented as below.
Figure 0.3 :
Figure 0.4 : dq‐transformation
The simulation results are plotted on the following figure.