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MicroHarmony Cell Sizes 40 - 260A Manual
9.5.2
Total IGBT/FWD Cell Losses vs Output Current
The table and charts below can be used for estimating IGBT losses as a function of cell output current. Primary
source values are used. Losses include conduction and switching losses for both the IGBT and FWD. Losses shown
are per cell. Individual IGBT/FWD losses are ¼ that of shown (40-140A) and 1/8 that of shown (200-260A).
Iout
40/70A
100A
140A
25
98.9
100.9
77.3
50
233.0
225.7
171.0
75
402.0
374.3
282.0
100
606.8
546.7
408.5
125
846.6
743.0
552.0
150
1122.0
963.0
712.0
175
1207.0
889.0
200
1475.0
1082.0
225
1292.0
250
1518.0
275
1761.0
300
2021.0
325
350
375
400
425
450
475
* The data above assumes 0.85 motor power factor, 0.95 motor efficiency, 105% modulation, 600Hz switching
frequency, 60Hz output frequency, Eupec IGBTs, and a 1015VDC bus.
Alternatively, total cell IGBT/FWD losses can be estimated as follows:
40/70Acell:
Pigbt = 0.02828 x Iout ^2 + 3.23561 x Iout + 0.39
100A cell:
Pigbt = 0.01908 x Iout ^2 + 3.55781 x Iout + 0.07857
140A cell:
Pigbt = 0.01326 x Iout ^2 + 2.758 x Iout + 0.14545
200A cell:
Pigbt = 0.00682 x Iout ^2 + 2.59283 x Iout + 0.11734
260A cell:
Pigbt = 0.0045 x Iout ^2 + 2.99225 x Iout + 0.04933
For individual 40-140A IGBT/FWD individual module losses, divide PigbtFWD by 4.
For individual 200-260A IGBT/FWD individual module losses, divide PigbtFWD by 8.
19001467: Version 1.0
200A
260A
69.1
77.7
40/70A
3000
146.8
161.0
233.0
250.0
2750
327.6
344.0
2500
430.7
444.0
542.4
550.0
2250
663.0
661.5
2000
791.0
778.7
928.6
901.0
1750
1074.0
1029.0
1500
1229.0
1163.0
1391.5
1302.0
1250
1562.8
1448.0
1000
1742.6
1598.0
1931.0
1755.0
750
2128.0
1916.5
500
2333.0
2084.0
2547.0
2257.0
250
2770.0
2436.0
0
0
s
Losses vs Output Current
100A
140A
200A
50
100 150 200 250 300 350 400 450 500
Output Current, Arms
Application Notes
260A
9
9-7
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