Question 2 6 Marks
An inverter is connected to the utility network by a transformer. The connection
transformer can be modelled by a per-phase series inductance of 0.8 mH and
resistance of 0.4 ?.
i. Derive the control transfer function for the d and q axis loops, showing your
fully working.
ii. If a q-loop control with gains of ???????? = 14 and ???????? = 900 are used. What is the
control loop bandwidth and damping for this loop?



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