hw5_solutions

# hw5_solutions - 2 The stator windings of a 3 phase...

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ECE 320: Energy Conversion and Power Electronics Name: Spring 2009 Homework #5 (Due: Monday, April 6, 2009) Circle or box your answer (don’t forget units). Staple any additional paper used to arrive at your answers to this sheet. 1. A 3-phase 2-pole induction motor is rated 230 (V), 60 (Hz) with Y-connected windings. The stator and rotor resistances are 1 and 2 ( ), magnetizing reactance is 100 ( ), stator and rotor side leakage reactances are 2 and 2 ( ), respectively. a. Calculate the starting torque. b. Calculate the no-load current and power factor.

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Unformatted text preview: 2. The stator windings of a 3 phase induction motor are: ( ) t i 377 sin 12 2 1 ⋅ = (A) ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − ⋅ = 3 2 377 sin 12 2 2 π t i (A) ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − ⋅ = 3 4 377 sin 12 2 3 t i (A) a. Calculate the current space vector for the stator. b. For a stator diameter of 20(cm), an air gap of 1.5(mm), and the number of turns for each stator winding of 130 turns, find the flux linkage and voltage space vectors. 3. Problem 6.17 from the course textbook. 4. Problem 6.21 from the course textbook....
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hw5_solutions - 2 The stator windings of a 3 phase...

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