= 5mH, Rf = 40 m, Lf = 3. A series-connected field-winding DC machine has the following parameters: NP Maf 1.5mH, Ra = 20 m, La = 1 mH. The machine is driven by a full-bridge inverter with a bus voltage Vous = 100 V and peak output current Imax = 50 A. Derive expressions for the maximum mechanical power capability of this machine and drives under motoring conditions as a function of rotor speed. Do not neglect the effects of the field and armature resistances in your analysis. Plot the resulting max power curve using Matlab. Compare this power capability qualitatively with that of a permanent magnet DC machine and drive, and with a field-winding DC machine whose armature and field coils are driven by separate power electronic circuits.