Grid connected single phase PV inverter using sinusoidal pulse width modulation

Grid connected single phase PV Inverter

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