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/// High Performance Motors

Revolutionary Winding Technology

SciMo developed a revolutionary and unique winding technology solving the core problems of any modern electric motor, which are material efficiency, cooling performance and cost. Out motor technology enables electric motors with power densities of up to 17 kW/kg


/// Electric High Performance Motors

SciMo is producing electric motors with highest power to weight ratios. Our motors proved their potential in the most challenging aerospace and motorsport applications, leading to a world champion title in 2015. SciMo’s motor technology is suitable for applications with the highest power density and efficiency requirements, such as high-efficiency motors, special motors and test bench motors. An overview of the different motor specifications is given in the following table.

Production motors

Motors
Type
Pole pairs
Speed (rpm)
eta (%)
Max. power (kW)
Cont. power (kW)
Cont. Torque (Nm)
Weight (kg)
Application
SY11.D
Inrunner
1
125.000
95
25
<5
0.4
2.0
Compressor, Flywheel
SY21.A
Inrunner
2
30.000
96
50
32
18
4.0
Motorsport
SY31.B
Inrunner
3
20.000
95
70
30
25
5.3
Motorsport
SY43.B
Inrunner
4
30.000
97
>180
100
80
13.0
Motorsport

We cannot show all the customer specific motors here.If you have an interesting project with challenging motor requirements, please contact us!

Case studies

Motors
Type
Pole pairs
Speed (rpm)
eta (%)
Max. power (kW)
Cont. power (kW)
Cont. Torque (Nm)
Weight (kg)
Application
SY2X.A
Inrunner
2
70.000
>96
>100
>100
17
Generator (stackable up to 300 kW)
SY3X.A
Inrunner
3
40.000
95
150
100
43
Testbench Dynometer
SY45.X
Inrunner
3
30.000
96
300
200
150
Testbench Dynometer
SY4X.A
Inrunner
4
18000
98.4
>400
250
300
30
Formula E (efficiency optimized)
SCFX.A
Outrunner
15
3000
>90
16
12
38
4.2
Aerospace
SYKX.A
Inrunner
20
3000
97
1700
1200
6000
<200
Aerospace 1.5 MW direct drive
SciMo SY11 Highspeedmotor
SY11
SciMo SY21 motor
SY21
SciMo SY31 motor
SY31
SciMo SY43 high performance motor
SY43


/// Motor technology


/// Winding Technology

SciMo radically rethought the purpose and the properties of an optimal winding for electric motors from scratch. This new approach to coil winding is based on thin rectangular flat wires that significantly increase the copper density in the motors.

The SciMo windig technique enables distributed windings with  copper filling factors above 70%. As a result the power density and efficiency are  significantly improved. Furthermore, the material savings in magnets and electric sheet lamination can compensate for the incresead winding manufacturing costs.

/// SciMo Winding

Distributed winding using rectangular wires:

  • over 70% copper filling factor
  • very good heat dissipation
  • defined location of terminals
  • robust and reliable design

/// Conventional Winding

Distributed winding using round wires:

  • around 45% copper filling factor
  • bad heat dissipation
  • manual phase connection


/// Motor Design and Optimization

SciMo is using a fully automated closed loop approach to design and optimize the electromagnetic layout of our motors. This optimized and detailed simulation of the electric drive system is crucial in order to design motors with highest performance that are close to the physical limits.

The iterative approach to the fully automated simulation toolchain is indicated in the following. The iteration stops when a global maximum is found.

  1. Unique parameter set describes the geometry and materials.
  2. The geometry is generated in high detail.
  3. Fully parallelized electromagnetic FEA is performed.
  4. Generation of a full 3D thermal FEA. Results are simplified to a thermal network of components of interest.
  5. Output motor data can be used to directly optimized inverter and gearbox design for particular machine layout.
  6. The simulation results are evaluated and used as feedback for an optimization of the parameter set to start with the next iteration.

The simulation results or output modell fully characterizes the entire drive system, which can be used to apply loadcycles and calculate the expected thermal response. As well, more complex simulations can be performed, for example calculation the maximum dynamics.

The tool chain is regulary benchmarked against test bench runs with our different motors. Deviations between simulations and measurement results are used as input data to optimized the simulation model.


/// Applications

SciMo motors are used in a wide range of applications. Our technology leads to light, efficient and powerful motor designs with highest power densities. The motors are therefore used in a wide range of applications, e.g. Traction motors, e-Booster, electric turbocharger, test bench motors, spindel drives, fly wheels,  pumps, compressors.

/// Test bench motors

Our motors are used in advanced test bench applications. The high motor speed in combination with a high torque distribution over the entire speed range are optimal for test bench applications. 

/// Motorsport

Our motors are used to power the next generation of Hydrogen Electric Racing cars (Forze Delft), where used in several Hyperloop competitions (1st and 2nd place) and as well as in the Formula Student (World ranking no.1).

/// Aerospace

SciMo motors are very powerful, light and efficient electric motors, an optimal solution for the needs of the electric aviation market. We’re in close cooperation with several companies in the electic aviation sector.

/// Special applications

In many applications there are no suitable motors available on the market. Due to its outstanding performance SciMo can  supply motors far beyond what is possible with standard technologies.


/// Motor specifications

The following list shows some examples of motors developed by us with performance specifications. We cannot show the customer-specific developed motors at this point.


/// SY11

Motor parameters of the SY11 high speed motor.

Design parameter
Value
Pole pairs
1
Airgap diameter (mm)
20
Active length (mm)
50
Winding
distributed
Magnet config.
buried
Cooling
Water jacket
Status
Prototype
Property
Value
Maximum speed (rpm)
125.000
Maximum efficiency (%)
>94
Maximum power (kW)
25
Continuous power (kW)
5
Continuous torque (Nm)
0.4
Weight (kg)
2.0
Wirkungsgradkennfeld des SciMo SY11 Hochleistungsmotors
Efficiency Map


/// SY21

Motor parameters of the SY21 motor with highest power density.

Design parameter
Value
Pole pairs
2
Airgap diameter (mm)
40
Active length (mm)
80
Winding
distributed
Magnet config.
buried
Cooling
Oil cooling
Status
Running in application
Property
Value
Maximum speed (rpm)
30.000
Maximum efficiency (%)
96
Maximum power (kW)
50
Continuous power (kW)
32
Continuous torque (Nm)
18
Weight (kg)
4.0
SY21 Efficiency map
Efficiency Map


/// SY31

Motor parameters of the SY31 motor with high power density.

Design parameter
Value
Pole pairs
3
Airgap diameter (mm)
60
Active length (mm)
66
Winding
distributed
Magnet config.
buried
Cooling
Water jacket
Status
Running in application
Property
Value
Maximum speed (rpm)
20.000
Maximum efficiency (%)
95
Maximum power (kW)
70
Continuous power (kW)
30
Continuous torque (Nm)
25
Weight (kg)
5.3
SY31 Efficiency map
Efficiency Map


/// SY43

Motor parameters of the SY43 motor with highest performance.

Design parameter
Value
Pole pairs
4
Airgap diameter (mm)
80
Active length (mm)
100
Winding
distributed
Magnet config.
buried
Cooling
Water jacket
Status
In Production
Property
Value
Maximum speed (rpm)
30.000
Maximum efficiency (%)
97
Maximum power (kW)
180
Continuous power (kW)
100
Continuous torque (Nm)
80
Weight (kg)
13.0
SciMo SY43 efficiency map
Efficiency Map


/// SY3X.A Testbench dynometer

Due to its high power density SciMo motors are ideally suited for high speed, high power dynometers with very high dynamics. There are not many motor suppliers that can generate such high continuous output powers from such small rotor dimensions. And small rotor dimensions help to deal with critical bending frequencies.

Design parameter
Value
Pole pairs
3
Airgap diameter (mm)
60
Active length (mm)
100
Winding
distributed
Magnet config.
buried
Cooling
Water jacket
Status
Running in application
Property
Value
Maximum speed (rpm)
40.000
Maximum efficiency (%)
95
Maximum power (kW)
150
Continuous power (kW)
100
Continuous torque (Nm)
43
Weight (kg)
SciMo ST3X Prüfstandsmotor
Efficiency Map


/// SY45.X

Motor parameters of the SY43 motor with highest performance.

Design parameter
Value
Pole pairs
4
Airgap diameter (mm)
80
Active length (mm)
200
Winding
distributed
Magnet config.
buried
Cooling
Water jacket
Status
Design phase
Property
Value
Maximum speed (rpm)
30.000
Maximum efficiency (%)
97
Maximum power (kW)
350
Continuous power (kW)
200
Continuous torque (Nm)
150
Weight (kg)
SciMo SY43 Prüfstandsmotor
Efficiency Map

The ST43.B is the testbench dynometer version of the existing and well tested SY43.B, but with two time the active length. (Picture shows SY43.B)