Environmental Engineering Reference
In-Depth Information
XG 18 in 14 V powernet: inertia = 3.6 gm
2
; weight = 6.4 kg; stator diameter = 137 mm;
bracket max diameter = 158 mm; length = 131 mm
Isorendements de XG 18 n°E3931 Ub+ = 14V points stabilises tamb = 25 °C
200
70-75%
65-70%
60-65%
55-60%
50-65%
45-50%
40-45%
35-40%
30-35%
25-30%
20-25%
15-20%
180
160
140
120
100
80
60
40
10-15%
20
5-10%
0-5%
0
2,000
4,000 6,000
Vitesse sitemateur (tr/min)
8,000
10,000 12,000 14,000
Figure 8.7 Efficiency map of Lundel alternator (Valeo Corporation)
INTETS efficiency map (from test data)
1,800
1,600
Peak output
(75 kW)
1,400
1,200
Continuous output
(30 kW)
1,000
800
600
400
200
0
0
200
400
600
Output speed
800
1000
1200
Testing conditions
Continuous output: 300 VDC input, 55 °C coolant
Peak output: 300 VDC input, 55 °C coolant, duration 45-60 seconds
Figure 8.8 Hybrid traction M/G efficiency map (UQM Technologies, INTETs)
traction system (INTETS) is shown. In this design, typical of permanent magnet
synchronous machines, the efficiency contours are closed and have islands at 90%
and higher. Also, the efficiency islands are typically at just above the corner point
speed and at power levels in the vicinity of continuous rated power. In designs for
