In a 2-pole, three phase PMAC synchronous motor, the torque constant kT and the voltage constant kE are 0.6 in respective MKS units. The synchronous inductance, LS is 10 mH. The stator winding resistance per phase is 1 Ω. The motor is connected to a load with a constant torque of 10 Nm in the clockwise direction. It is desired to run the load at an angular speed of 1500 rpm in the counter clockwise direction. Assume suitable rotor position at time t = 0.
(a) Calculate the phase currents ia (t), ib (t) and ic (t)
(b) Calculate the required stator phase ‘a' voltage.