Question

can someome show me step by step on how todo problem 4? teachers hint: start with V_ao (armature voltage operating point), V_fo(field voltage operating point) steady state operatin point. find I_ao, I_fo, with rated current. draw block diagram for V_f snd V_a

4·The field current of a separately-excited motor is variable from zero to rated value. Derive the dynamic equations of the de motor, its block diagram, and the small-signal armature-current response for a simultancous voltage input to the field and torque disturbance, keeping the voltage applied to the armature constant. The motor is run- ning at 1000 rpm, delivering 10 N-m torque, with half the rated flux. The machine details are given below: 400 V dc, 22.75 hp, 3600 rpm. Ra 0.34 Ω, J 0035 kg-m, La- 1.1 Bi = 0 N·m/rad/sec. Kbー1.061 volt/rad/sec, M 0.2122 H, Rf-20 Ω、L,-17.7 H. 1 the transfer function between rotor speed and load

Answer 1