EMRAX 348 - EMRAX 208 Technical Data Table (dynamometer test data)

User’s Manual for Advanced Axial Flux Synchronous Motors and Generators
www.emrax.com Version 4.5 / January 2017 13
EMRAX 208 Technical Data Table (dynamometer test data)
Technical data
Type
EMRAX 208
High Voltage
EMRAX 208
Medium Voltage
EMRAX 208
Low Voltage
Air cooled = AC
Liquid cooled = LC
Combined cooled = Air + Liquid cooled = CC
AC
LC
CC
AC
LC
CC
AC
LC
CC
Ingress protection
IP21
IP65
IP21
IP21
IP65
IP21
IP21
IP65
IP21
Cooling medium specification
(Air Flow = AF; Inlet Water/glycol Flow =
WF; Ambient Air = AA)
If inlet WF temperature and/or AA
temperature are lower, then continuous
power is higher.
AF=20m/s;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
AF=20m/s;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
AF=20m/s;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
WF=8l/min
at 50°C;
AA=25°C
Weight [kg]
9,1
9,4
9,3
9,1
9,4
9,3
9,1
9,4
9,3
Diameter ø / width [mm]
208 / 85
Maximal battery voltage [Vdc] and full
load/no load RPM
470 Vdc (5170/7050 RPM)
320 Vdc (5760/7040 RPM)
125 Vdc (6250/7250 RPM)
Peak motor power at max RPM (few min
at cold start / few seconds at hot start)
[kW]
80
Continuous motor power (at 3000-5000
RPM) depends on the motor RPM [kW]
20 - 32
20 - 32
25 - 40
20 - 32
20 - 32
25 - 40
20 - 32
20 - 32
25 - 40
Maximal rotation speed [RPM]
6000 (7000 peak for a few seconds)
Maximal motor current (for 2 min if cooled
as described in Manual) [Arms]
200
320
800
Continuous motor current [Arms]
100
160
400
Maximal peak motor torque [Nm]
150
Continuous motor torque [Nm]
80
Torque / motor current [Nm/1Aph rms]
0,83
0,54
0,20
Maximal temperature of the copper
windings in the stator and max.
temperature of the magnets [°C]
120
Motor efficiency [%]
92-98%
Internal phase resistance at 25 °C [mΩ]
12,0
5,7
0,8
Input phase wire cross-section [mm
2
]
10,2
15,2
38
Wire connection
star
Induction Ld/Lq [µH]
125/130
52/56
7,2/7,5
Controller / motor signal
sine wave
AC voltage between two phases
[Vrms/1RPM]
0,0487
0,0319
0,0117
Specific idle speed (no load RPM)
[RPM/1Vdc]
15
22
58
Specific load speed (depends on the
controller settings) [RPM/1Vdc]
11 – 15
18 – 22
50 – 58
Magnetic field weakening (for higher RPM
at the same power and lower torque) [%]
up to 100
Magnetic flux – axial [Vs]
0,0393
0,0257
0,095
Temperature sensor in the motor
kty 81/210
Number of pole pairs
10
Rotor Inertia (mass dia=160mm, m=4,0kg)
[kg*cm²]
256
Bearings (front:back) - SKF/FAG
6206:6206 (for radial forces) or 6206:7206 (for axial-radial forces; for pull mode; focusing on very high axial load, e.g. for air
propeller) or 6206:3206 (for axial-radial forces; for pull-push mode; »O« orientation, α=25°); other bearings are possible
(exceptionally)