bipolar BLDC motor is used to drive a unidirectional torque of 300 Nm. The voltage of the dc source is 400 V, k? = 1.0 Vs, and the armature resistance of the motor is 1.0 ?. Compute the modulation factor for the following cases:

a. Motor operation at 600 rpm
b. Holding
c. Plugging at 300 rpm in the reverse direction
Also, compute the armature current in all of the above cases.


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