posted 10 months ago

Total stator, Rotor copper and mechanical losses equate to 3, 4 and 7%of the input power. Determine each of the following:

The slip

The efficiency of the motor

The torque developed in the rotor

The shaft output torque.

Sketch and label the motor power flow chart for the motor described in this question. You answer must clearly identify the input power, output power and power losses.

posted 10 months ago

When the motor is stationary determine each of the following:

i The rotor EMF

ii The rotor frequency

The rotor current

- The power factor of the rotor

posted 10 months ago

posted 11 months ago

posted 11 months ago

posted 11 months ago

Calculate the armature-to-field mutual inductance.

The machine is to be operated as a motor supplying a 600 kW load at its rated terminal voltage. Calculate the internal voltage Eaf and the corresponding field current if the motor is operating at unity power factor.

c. For a constant load power of 600 kW, write a MATLAB script to plot the terminal current as a function of field current. For your plot, let the field current vary between a minimum value corresponding to a machine loading of 750 kVA at leading power factor and a maximum value

corresponding to a machine loading of 750 kVA at lagging power factor.What value of field current produces the minimum terminal current? Why?

posted 11 months ago

posted 11 months ago

posted 11 months ago

posted 11 months ago