This is the model of grid connected single phase PV inverter using the vector control technique. The d component controls the active current while the q component controls the reactive current. The control also employs the feed-forward / cross-coupling terms for the current controller.
Two events are simulated in the model
1. at t = 0.7s, a sudden increase of 4.5 kW of DC power occurs
2. at t = 1.2s, a change of reference for the reactive current occurs. iq_set is changed to 0.2 from 0 pu.
The design of LCL filter is also illustrated in the m file