Environmental Engineering Reference
In-Depth Information
Control signals
Phase A1 and A2
U
I
dc-link capacitor current
I
Battery current
Time
(or angle)
I
dc-link capacitor current without interleaved PWM
Figure 6.25 Battery and link capacitor current in the interleaved PWM system
It is recommended that the topic of dc link capacitor minimization or elim-
ination be encouraged as it has great potential to further reduce inverter package
volume, promote systems on a chip initiatives, and foster improved systems
reliability.
6.12 Exercises
Approximate parameters for the Camry hybrid electric machine MG1 and power
inverter to be used in the following sets of exercises:
P
pk
(kW)
105
Inverter #IGBT/
S
w
18
2,100 mm
2
Poles,
P
8
IGBT area,
S
sw
1,300 mm
2
PM flux linkage,
y
m
0.025 Wb-t
Diode area,
S
dio
Base speed,
n
b
4,500 rpm
Link filter cap
2,100
m
F, 750 V
0.7 m
W
at 80
C
dc link volts,
U
d
600 V
Link filter ESR
Stator iron mass,
M
s
18 kg
Stator phase res.,
R
ph
23 m
W
MG1 copper mass,
M
Cu
6 kg
Stator voltage const.,
k
e
0.101 V
rms
/rad/s
Stator
d
-axis
L
d
391
m
H
Stator
q
-axis,
L
q
145
m
H
M/G efficiency,
h
m
0.94
Stator winding type
wye
