A 380V, 50 Hz, 4-pole, 1460 rev/min, star-connected three-phase induction motor is driven by a Variable Voltage Variable

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A 380v 50 Hz 4 Pole 1460 Rev Min Star Connected Three Phase Induction Motor Is Driven By A Variable Voltage Variable 1 (70.63 KiB) Viewed 22 times

A 380V, 50 Hz, 4-pole, 1460 rev/min, star-connected three-phase induction motor is driven by a Variable Voltage Variable Frequency (VVVF) controller. The motor has the following per phase circuit parameters referred to the stator at rated load. Rs : Stator Resistance = 0.522 . R': Referred Rotor Resistance = 0.312 Xs : Stator Reactance = 1.5 12 • X', Referred Rotor Reactance - 1.512 : Xm : Magnetizing Reactance = 3002 Re:Core Loss Resistance = 012 . () Evaluate the motor slip at rated speed, (3 marks) Draw the per phase equivalent circuit of the motor, (3 marks) (iii) Evaluate the stator current at rated load, and (4 marks) (iv) Evaluate the motor torque at rated load. (4 marks)