Traction Motors
SDT designs and supplies customised traction motors of high power density in the power range of 3 to 250kW. We can design for supply voltages between 24 and 600Vdc, depending on the available power source and output power requirement.
Typically these motors are PM-DC 3- phase, 8-pole, brushless designs with inner rotors and water cooled stators, which are operated with gear reduction ratios in the range of 4 to 6:1.
However we also supply direct drive and hub outer rotor designs.
Housed motor with water cooling Direct Drive= hub, outer rotor motor
Important characteristics:
Optimised designs for high power density with minimum water cooling requirements.
- Efficiency at maximum power >96%.
- Field weakening range of up to 4:1 possible, however we recommend a constant power range over a 2:1 speed range only as this avoids uncontrolled regeneration braking in the case of the power electronics being disabled at high motor speed.
- These motors can also be used as generators or starter/generators
The following tables list the standard, frameless (inner rotor, IPM) models and windings
currently available:
SDT-ACI3-0230-120-400- , operation at 400Vdc with water cooling
Back- EMF V/1,000rpm |
Nom. Power kW |
Torque Nm |
Phase Current rms |
Peak stall Torque Nm |
Phase Stator Current |
Stator OD | Stator Length |
Motor Weight |
---|---|---|---|---|---|---|---|---|
61 |
30 |
115Nm/2,500rpm |
137 |
300 |
375 |
230 |
163 |
25 |
44 |
60 |
120Nm/5,000rpm |
190 |
300 |
520 |
230 |
163 |
25 |
SDT-ACI3-0230-215-400- , operation at 400Vdc with water cooling
Back- EMF V/1,000rpm |
Nom. Power kW |
Torque Nm |
Phase Current rms |
Peak stall Torque Nm |
Phase Stator Current |
Stator OD | Stator Length |
Motor Weight |
---|---|---|---|---|---|---|---|---|
61 |
63 |
240Nm/2,500rpm |
274 |
600 |
720 |
215 |
262 |
31.5 |
41 |
131 |
250Nm/5,000rpm |
396 |
600 |
1000 |
215 |
262 |
31.5 |
SDT-ACI3-0290-153-400- , operation at 400Vdc with water cooling
Back- EMF V/1,000rpm |
Nom. Power kW |
Torque Nm |
Phase Current rms |
Peak stall Torque Nm |
Phase Stator Current |
Stator OD | Stator Length |
Motor Weight |
---|---|---|---|---|---|---|---|---|
61 |
63 |
250Nm/5,000rpm |
460 |
600 |
1200 |
290 |
153 |
28 |
* less cooling needed (forced-air also feasible) ** + ca. 20mm with water cooling jacket
Direct Drive - Hub, outer Rotor Motor
SDT can further offer wheel-rim motors with outer rotors for direct propulsion at the
wheel. These can be of any diameter and power rating. So far two models have been
developed:
SDT-ACO3-0400-080-300-TH-KN, with HE-sensors (see photo above right)
Natural convection
- Continuous: 200 Nm, 750 rpm (15 kW, 300V @61Arms, no field weakening)
- 400mm OD, 250mm ID, 80mm stack length (total 115 mm), mass 41.8kg
- duty cycle dependent on cooling conditions
- SDT-ACO3-0439-050-350-TH-KN, with HE-sensors
Water cooling
- Continuous: 300 Nm, 330 rpm (10 kW, 350V @55Arms)
- 100 Nm, 1,050 rpm (11 kW with field weakening @30Arms)
- 439mm OD, 270mm ID, 50mm stack length (total 90 mm), mass 40.8kg
- duty cycle dependent on cooling conditions
SDT-ACO3-0100-100-300-TH-KN, with HE-sensors
Water cooling
- Continuous: 6,0 Nm, 1000 rpm (0,628 kW, 300V @2,5 Arms)
- 100 mm OD, 60mm ID, 100mm stack length (total 130 mm), mass 3.2 kg
- duty cycle dependent on cooling conditions
SDT-ACO3-0200-100-300-TH-KN, with HE-sensors
Water cooling
- Continuous: 45,0 Nm, 1000 rpm (4,7 kW, 300V @12,0 Arms)
- 200 mm OD, 120mm ID, 100 mm stack length (total 135 mm), mass 12.7 kg
- duty cycle dependent on cooling conditions
SDT-ACO3-0300-100-300-TH-KN, with HE-sensors
Water cooling
- Continuous: 145,0 Nm, 1000 rpm (15,2 kW, 300V @40,0 Arms)
- 300 mm OD, 185 mm ID, 100 mm stack length (total 140 mm), mass 28.9 kg
- duty cycle dependent on cooling conditions
SDT-ACO3-0400-100-300-TH-KN, with HE-sensors
Water cooling
- Continuous: 330,0 Nm, 1000 rpm (34,6 kW, 300V @95,0 Arms)
- 400 mm OD, 248 mm ID, 100 mm stack length (total 145 mm), mass 52.0 kg
- duty cycle dependent on cooling conditions
We would be happy to discuss any other product requirements you may have. contact us.