Consider a 500-kW, 2300-V, 50-Hz, eight-pole synchronous motor with a synchronous reactance of 1.18 per unit and

Question:

Consider a 500-kW, 2300-V, 50-Hz, eight-pole synchronous motor with a synchronous reactance of 1.18 per unit and AFNL = 94 A. It is to be operated under field-oriented torque control using the unity-power-factor algorithm described in the text following Example 11.8. It will be used to drive a load whose torque varies quadratic ally with speed and whose torque at a speed of 750 r/min is 5900 N · m. The complete drive system will include a speed-control loop such as that shown in Figure b. Write a MATLAB script whose input is the desired motor speed (up to 750r/min) and whose output is the motor torque, the field current, the direct and quadrature-axis currents, the armature current, and the line-to-line terminal voltage. Exercise your script for a motor speed of650r/min.