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A 380 V, 4-pole, 1250 rev/min, 50 Hz three-phase induction motor is controlled by a Variable Voltage Variable Frequency
Posted: Mon May 09, 2022 7:55 am
by answerhappygod
- A 380 V 4 Pole 1250 Rev Min 50 Hz Three Phase Induction Motor Is Controlled By A Variable Voltage Variable Frequency 1 (43.58 KiB) Viewed 21 times
A 380 V, 4-pole, 1250 rev/min, 50 Hz three-phase induction motor is controlled by a Variable Voltage Variable Frequency (VVVF) drive. The magnetic flux is kept unchanged, and the supply frequency is set at 30 Hz. Evaluate (a) the supply line voltage of the motor, (2 marks) (b) the synchronous speed in rev/min, (2 marks) (c) the motor speed in rev/min, and (2 marks) (d) by giving a reason, the supply voltage required for a safe operation if (2 marks) the supply frequency is increased to 60 Hz.