A 460 V, 60 Hz, 6 pole, 1180 rpm, Y-connected squirrel-cage induction motor has the following parameters per phase referred to the stator: Rs= 0.19 ohm, Rr' = 0.07 ohm, Xs = 0.75 ohm, Xr'= 0.67 ohm and Xm= 20 ohm. The motor is fed by a 6-step inverter, which in turn is fed by a 6-pulse fully-controlled rectifier. For the braking operation of the drive at a constant V/f ratio, calculate the speed for a braking torque of 350 N-m and the inverter frequency of 40 Hz. Options: 784 rpm 764 rpm 816 rpm 870 rpm
A 460 V, 60 Hz, 6 pole, 1180 rpm, Y-connected squirrel-cage induction motor has the following parameters per phase referred to the stator: Rs= 0.19 ohm, Rr' = 0.07 ohm, Xs = 0.75 ohm, Xr'= 0.67 ohm and Xm= 20 ohm. The motor is fed by a 6-step inverter, which in turn is fed by a 6-pulse fully-controlled rectifier. For the braking operation of the drive at a constant V/f ratio, calculate the speed for a braking torque of 350 N-m and the inverter frequency of 40 Hz. Options: 784 rpm 764 rpm 816 rpm 870 rpm
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 460 V, 60 Hz, 6 pole, 1180 rpm, Y-connected squirrel-cage induction motor has the following parameters per phase referred to the stator: Rs= 0.19 ohm, Rr' = 0.07 ohm, Xs = 0.75 ohm, Xr'= 0.67 ohm and Xm= 20 ohm. The motor is fed by a 6-step inverter, which in turn is fed by a 6-pulse fully-controlled rectifier. For the braking operation of the drive at a constant V/f ratio, calculate the speed for a braking torque of 350 N-m and the inverter frequency of 40 Hz. Options:
784 rpm
764 rpm
816 rpm
870 rpm
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