Problem 1: A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent circuit com

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Problem 1 A 208 V Four Pole 60 Hz Y Connected Wound Rotor Induction Motor Is Rated At 30 Hp Its Equivalent Circuit Com 1 (113.13 KiB) Viewed 41 times

Problem 1: A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent circuit components are - = R = 0.112 R2 = 0.07 22 Xm = 102 X = 0.2112 x2 = 0.2112 Prot,loss = 500 W Pcore = 400 W For a slip of 0.05, find (a) The line current I: (b) The stator copper losses Pack (c) The air-gap power PAG (d) The power converted from electrical to mechanical form Pcoav (e) The induced torque Tind The load torque Toad (g) The overall machine efficiency (h) The motor speed in revolutions per minute and radians per second Notes: 1. Use the IEEE-recommended equivalent circuit to solve Problem 1. 2- All indicated parameters are already refereed to the stator side. Problem 2: For the condition in problem 1, find: (a) The maximum torque (pullout torque). (6) The slip at the maximum torque. (c) The starting torque. Note: You can use the equations of Ta, Tmax, and Smax derived in the slides using the approximate