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The per phase equivalent circuit parameters for a 3 phase. 6 pole star connected induction machine operating off a 230V (phase voltage), 50 Hz supply are shown on Table Q4b. Assuming that friction and windage losses are negligible, determine the following for operation at a slip of 0.03: (b) The per phase equivalent circuit (including values below) The actual motor speed (rpm) The mechanical power (W) The torque (Nm) The motor losses (W) (i) (ii) (iii) (iv) (v) (vi) The motor efficiency (%) Value 1502 Parameter XM R. R, 4002 0.62 R, 0.450 Х Table Q4b

The per phase equivalent circuit parameters for a 3 phase. 6 pole star connected induction machine operating off a 230V (phase voltage), 50 Hz supply are shown on Table Q4b. Assuming that friction and windage losses are negligible, determine the following for operation at a slip of 0.03: (b) The per phase equivalent circuit (including values below) The actual motor speed (rpm) The mechanical power (W) The torque (Nm) The motor losses (W) (i) (ii) (iii) (iv) (v) (vi) The motor efficiency (%) Value 1502 Parameter XM R. R, 4002 0.62 R, 0.450 Х Table Q4b

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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(b) The per phase equivalent circuit parameters for a 3 phase. 6 pole star connected induction machine operating off a 230V (phase voltage), 50 Hz supply are shown on Table Q4b. Assuming that friction and windage losses are negligible, determine the following for operation at a slip of 0.03: (i) (ii) (iii) (iv) The per phase equivalent circuit (including values below) The actual motor speed (rpm) The mechanical power (W) The torque (Nm) The motor losses (W) (v) (vi) The motor efficiency (%) Parameter Value XM 1502 R. 4002 R, 0.62 R, 0.452 Х 22 Table Q4b Outline with the aid of a diagram an inverter driven variable speed induction motor drive from a fixed frequency 3 phase AC supply. Describe the basic inverter control requirements to achieve variable speed operation, and sketch typical torque speed curves. (c)
Transcribed Image Text:(b) The per phase equivalent circuit parameters for a 3 phase. 6 pole star connected induction machine operating off a 230V (phase voltage), 50 Hz supply are shown on Table Q4b. Assuming that friction and windage losses are negligible, determine the following for operation at a slip of 0.03: (i) (ii) (iii) (iv) The per phase equivalent circuit (including values below) The actual motor speed (rpm) The mechanical power (W) The torque (Nm) The motor losses (W) (v) (vi) The motor efficiency (%) Parameter Value XM 1502 R. 4002 R, 0.62 R, 0.452 Х 22 Table Q4b Outline with the aid of a diagram an inverter driven variable speed induction motor drive from a fixed frequency 3 phase AC supply. Describe the basic inverter control requirements to achieve variable speed operation, and sketch typical torque speed curves. (c)
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