Use the machine parameters in Problem 8.4 to perform the necessary calculations to draw the steady-state voltage-current phasor diagram when the machine is operating at rated terminal voltage (Et = 1 pu) and rated terminal current (It = 1 pu) at 0.9 leading power factor. Assume no saturation.

Problem 8.4

The parameters of a 60 Hz synchronous machine in the form employed by most manufacturers are as follows:

The equivalent circuit of a synchronous machine requires the following parameters:

Calculate the necessary equivalent circuit parameters and sketch the direct-axis and quadrature-axis voltage equivalent circuits. Note that the unit for the time constants given here is seconds.