Hw2-sol - SP#1 Basic issue is that adding the capacitors...

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Assignment 2 ECE 430 Fall 2007 Solutions Text 2.16 a) (lagging, so positive) b) c) d) total complex power given above Text 2.17
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a) b) (lagging, since Q is positive) c) (note, the formula is the same whether delta or Y) d) (Note, we can drop the negative since it is understood we're using a capacitor) Text 2.19 a) (BEFORE CAPACITORS)
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b) Text 2.20 (line to line) a) b) (at angle zero)
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c) d) Text 2.25 (note the minus sine can be dropped if capacitance is understood)
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Unformatted text preview: SP#1 Basic issue is that adding the capacitors does not change the real power So in each case P is the same. S1^2 = P^2 + Q1^2 S2^2 = P^2 + Q2^2 S1^2 - S2^2 = 3VLL^2*(I2^2 - I1^2) = Q2^2 - Q1^2 = (Q1+Qcap)^2 - Q1^2 = 2Q1Qcap + Qcap^2 (Note, P2 = P1 by default, this is just a check) SP#2 a) b) c) d) (real power only)...
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This note was uploaded on 01/19/2011 for the course ECE ECE430 taught by Professor Petersauer during the Fall '10 term at University of Illinois at Urbana–Champaign.

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Hw2-sol - SP#1 Basic issue is that adding the capacitors...

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