Consider the system discussed in Problem 11. Compute the effect of the fifth and seventh harmonics on the average torque if the machine is operating at a slip of 0.025 relative to the fundamental component of the applied voltages.
Problem 11
Consider the 3-hp induction motor whose parameters are listed in Table 6.10-1. Plot the torque-speed and dc current-speed curves if it is being fed from a three phase bridge in six-step operation, assuming that the dc voltage is 560 V and the frequency is 120 Hz. Neglect harmonics.
