Problem 1 Stator of 3-phase machine is excited by a current source as follows: I, lags Ia by 120 degrees and Ie lags I, by 120 degrees. Three-currents excite their respective windings on stator as shown in the figure. For Ia = -Im for 0 < 0 < 7 Ia Im for 7 < 0 < 27 (a) Draw Ia, Ib, Ic. (b) Find Bnet- (c) Explain significance of Bnet in terms of rotation speed and rotation direction.
Problem 1 Stator of 3-phase machine is excited by a current source as follows: I, lags Ia by 120 degrees and Ie lags I, by 120 degrees. Three-currents excite their respective windings on stator as shown in the figure. For Ia = -Im for 0 < 0 < 7 Ia Im for 7 < 0 < 27 (a) Draw Ia, Ib, Ic. (b) Find Bnet- (c) Explain significance of Bnet in terms of rotation speed and rotation direction.
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.28MCQ
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