In the previous chapters we have presented some examples of current control loop implementations, both for single- and for three-phase voltage source inverters. We have discussed how to design a PI current controller in the continuous time domain and how to turn it into a discrete time, or digital, controller. We also introduced the principles of dead-beat, predictive current control. In all these cases, we have seen how the presence of a current control loop actually turns the VSI into a controlled current source with predetermined speed of response and reference tracking accuracy.
