Fall_2012_HW#7 Solution

74 3 3 440 14228 3 14228 08 8214 3 c the reactive

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Unformatted text preview: er is, 3 3 440 82.14 sin 0.8 65.06 is, d) The 440∠0 0.3 4 82.14∠36.87 617.42 277.63 676.97∠ 24.21 e) The stator copper losses is, 3| | 3 82.14 0.3 6.07 is, f) The 86.74 6.07 80.4 g) If the E is decrease by 10%, | | 0.9 676.97 609.27 To simplify this part of the problem, we will ignore . Then the quality will be changes. Therefore, the reactive power is supplied by the motor. constant as | ∴ | | ∴ 440∠0 | 27.10 609.27 ∠ 27.10 4 69.39 25.60 73.96∠20.25 ∴ 3 3 440 73.96 20.24 33.79 7 ECE3602012FLHW#7 Problem#6 a) This machine is a generator supplying real power to the power system, because ahead of b) .It is consuming reactive power because is . This machine is acting as a generator, and the current flow in these condition is , E R ∴I V jX 430∠15 0.3 440∠0 j4 28.4∠16.78 A The real power supplied by this machine is, 3 3 440 28.4 cos 16.8 35.9 The reactive power supplied by this machine is, 3 3 440 28.4 sin 16.8 10.8 I...
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This note was uploaded on 09/07/2013 for the course ECE 360 taught by Professor Clarke during the Fall '12 term at Clemson.

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