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A5. An elevator is driven by a 380 V, 50 Hz, 1480 rev'min, 4-pole, star-connected three- phase induction motor with vari
Posted: Mon May 09, 2022 8:00 am
by answerhappygod
- A5 An Elevator Is Driven By A 380 V 50 Hz 1480 Rev Min 4 Pole Star Connected Three Phase Induction Motor With Vari 1 (19.73 KiB) Viewed 25 times
A5. An elevator is driven by a 380 V, 50 Hz, 1480 rev'min, 4-pole, star-connected three- phase induction motor with variable voltage variable frequency (VVVF) controller. The motor has a rotor resistance and reactance 0.250 and 0.80 respectively. If the motor nins at 560 rev/min and the supply frequency is reduced to 35 Hz, by neglecting the stator impedance, evaluate (a) the slip, 6) the rotor curent, and c) the motor output torque. (3 marks) (3 marks) (2 marks)