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Students Name:
Or Trabelsi ;Adam Weiss
Department:
Electrical Engineering
Advisor Name:
Dr. Alberto Berenstain
DC Power Traction Substations
2015
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4
MATLAB & SIMULINK SIMULATION
0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04 0.045 0.05
-500
-400
-300
-200
-100
0
100
200
300
400
500
Time [Sec]
Ampli tude Phase Voltage [V]
6 Phases Tract ion Transformer Output Voltage
L1 - Y
L2 - Y
L3 - Y
L1 - D
L2 - D
L3 - D
0
5
10
15
20
0
10
20
30
40
50
60
Harmonic order
Fundamental (50Hz) = 109.8 , THD= 5.74%
Mag (% of Fundamental)
0
5
10
15
20
0
10
20
30
40
50
60
Harmonic order
Fundamental (50Hz) = 111.1 , THD= 2.65%
Mag (% of Fundamental)
THDi Comparison
Rectifier Type & Connection THDi [%]
6 Pulses
5.74
12 Pulses Series
2.8
12 Pulses Parallel
3.84
12 Pulses Parallel +
Interphase Transformer
2.65
12 Pulses Rectifier
6 Pulses Rectifier
I1
I2
Iout
Interphase Transformer
Structure
0
5 10 15 20 25 30 35 40 45 50
0
500
1000
Time [mSec]
V
out
& I
out
[V & A]
Wi th Interphase Transformer
V
DC
I
DC
I
Rec t1
I
Rec t2
0
5 10 15 20 25 30 35 40 45 50
0
500
1000
Time [mSec]
V
out
& I
out
[V & A]
Without Interphase Transformer
V
DC
I
DC
I
Rec t1
I
Rec t2