HW#8 - Probs. 9.6, 9.12 due Mon Mar 21st 9am.
HW#9 - Probs. 9.2, 9.3, 9.4 due date TBA.
Term Project - Mar 18th - a) complete reference list and b) fully-detailed table of
contents according to format given in Term Project Guidelines, e-mail Dr.
Mork.
Transformer modeling - Section 11.1 of text, plus lecture notes
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Review pre-req matls on mag circuits(as posted under Pre-Req Mat’ls)
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Ampere’s Law, Lenz’ Law, magnetic circuit parameters
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Example of single-phase transformer, Excitation
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Waveforms for voltage, IEX, IR, IC, λ
Next - take stock of available ATP transformer models
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Course Info:
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Web page: http://www.ee.mtu.edu/faculty/bamork/ee5220/
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Book, references, syllabus, more are on web page.
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Software - Matlab. ATP/EMTP [ License - www.emtp.org ] ATP tutorials
posted on our course web page
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EE5220-L@mtu.edu (participation = half letter grade, 5%)
Mon Mar 14, 2016
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Topics for Today:
EE 5220 - Lecture 25 (reprise from Spring 2010)
SRC
U
I
15
c:XX0004-
t: XX0003
20
25
-2.0
-200
10
-1.5
-150
c:XFMR -XX0001
-1.0
-100
c:XX0004-
-0.5
-50
5
0.0
0
0
0.5
50
(file 1FXFMR_ex.pl4; x-var t) v:XFMR
1.0
100
*10 -3
1.5
2.0
150
Steady-State Excitation of Single Phase Transformer
Rated voltage applied to primary, Open-circuited secondary
Rc
I
200
XFMR
V
I
TravWave2.acp
Line B
Zs
V
V
S3
I
U
V
I
S1
I
Both lines lossless.
Line A: L’ = 0.6; C’ = 7.3; 250 mi
Line B: L’ = 0.3; C’= 14.6; 150 mi
Line A
S2
ZR
25
*10 3
20
15
10
5
0
-5
0
2
(file TravWave2.pl4; x-var t) v:S
4
v:R
v:AB
6
8
*10 -3
10
Lossless, as above, simulation out to .05 s. Receiving end never reaches steady-state 10 kV.
30
*10 3
25
20
15
10
5
0
-5
-10
0
10
(f ile Trav Wav e2.pl4; x-v ar t) v :S
20
v :R
30
40
*10 -3
50
v :AB
Losses added, R/l = 0.2 for both lines, simulation out to 0.1 s. Receiving end settles to 10 kV.
20
*10 3
16
12
8
4
0
0.00
0.02
(f ile Trav Wav e2.pl4; x-v ar t) v :S
0.04
v :R
v :AB
0.06
0.08
0.10