Sep.1998
6.5.2 Estimating Losses
Once the coordination of the
OC trip with the application require-
ments has been established the
next step is determining the cooling
system requirements. Section 3.4
provides a general description of
the methodology for loss estimation
and thermal system design. Figure
6.20 shows the total switching en-
ergy (E
SW(on)
+E
SW(off)
) versus I
C
for all third generation IPMs.
Figure 6.21 shows total switching
energy versus I
C
for V-Series
IPMs. A detailed explanation of
these curves and their use can be
found in Section 3.4.1. Figures
6.22 through 6.34 show simulation
results calculating total power loss
(switching and conduction) per arm
in a sinusoidal output PWM inverter
application using V-Series IPMs.
Table 6.4 Motor Rating vs. SC Protection for V-Series IPMs
Current
Motor Rating (HP)
NEC Current Rating A(RMS)
τ
Inverter Peak Current (A)*
Applicable IPM
Minimum SC Trip (A)
240VAC Line
10
15
20
30
40
50
75
28
42
54
80
104
130
192
95
143
183
271
353
441
652
PM75RVA060
PM100CVA060
PM150CVA060
PM200CVA060
PM300CVA060
PM400DVA060
PM600DVA060
115
158
210
310
396
650
1000
460VAC Line
10
20
30
40
50
75
14
27
40
52
65
96
48
92
136
176
221
326
PM50RVA120
PM75CVA120
PM100CVA120
PM150CVA120
PM200DVA120
PM300DVA120
59
105
145
200
240
380
- From NEC Table 430-150
* - Inverter peak current is based on 200% overload requirement and a 20% current ripple factor.
10
0
10
1
10
2
10
3
10
4
10
-1
10
0
COLLECTOR CURRENT, I
C
, (AMPERES)
S
10
1
10
3
10
2
CONDITIONS:
INDUCTIVE LOAD
SWITCHING OPERATION
T
j
= 125
o
C
V
CC
= 1/2 V
CES
V
D
= 15V
SWITCHING DISSIPATION =
TURN-ON DISSIPATION +
TURN-OFF DISSIPATION
COMPATIBLE I
RANGE:
RATED I
C
×
0.1 ~ 1.4
600V SERIES
1200V SERIES
APPLICABLE TYPES: THIRD-GENERATION IPM
PM200DSA060,
PM75DSA120,
PM300DSA120,
PM75CSA120,
PM20CSJ060,
PM50RSK060,
PM10RSH120,
PM300DSA060,
PM100DSA120,
PM100CSA060,
PM100CSA120,
PM300CSJ060,
PM75RSA060,
PM15RSH120,
PM400DSA060,
PM150DSA120,
PM150CSA060,
PM10CSJ060,
PM30RSF060,
PM100RSA060,
PM25RSB120,
PM600DSA060,
PM200DSA120,
PM200CSA060,
PM15CSJ060,
PM50RSA060,
PM150RSA060,
PM50RSA120
Figure 6.20
Switching Energy vs. I
C
for Third Generation IPMs
MITSUBISHI SEMICONDUCTORS POWER MODULES MOS
USING INTELLIGENT POWER MODULES