1. Axial Flux Coreless Technology

2. Background:
Electric Machines
Classification

3. Vs. brush using
Stator windings
Rotor magnets
driver
brushless
brush

4. Vs. shape
Disk-shaped
Cylindrical

5. Vs. current-field directions
Currents
Magnetic field
Torque
Rotation axles
Axial-Field
Radial-Field

6. WE DEAL WITH AND OFFER:
Brushless
Axial field
Disk-shaped

7. Why do we offer …

8. … Brushless ? No brushes – no maintenance
No brushes – long working life
No brushes – no sparking
No brushes – reduced EMI / RFI

9. System with DISK-SHAPED system with CYLINDRICAL

10. … Axial Flux ?
RADIAL FLUX
AXIAL FLUX

11. Axial Flux Coreless Technology
Detailing The
Axial Flux Coreless Technology

12. Electromagnetic Structure

13. General Design

14. Stator
Coils
Carrying structure

15. Rotor
Yoke
Permanent magnets
Carrying structure

16. of Axial-Flux Machines
Additional Features
of Axial-Flux Machines

17. Modularity - Example of 3-Module Structure

18. Principle Features and Advantages

19. Features
Axial direction of magnetic flux and radial direction of electric currents
Light-weight disk-shaped stator
Absolutely no cogging
No parasitic forces between rotor and stators
Self-ventilation or forced cooling
Very low inductance

20. Advantages No eddy-current losses
Excellent power/weight, power/volume ratios
Extremely high efficiency at high speeds
Absolutely smooth rotation
Excellent controllability
Very low voltage drop under load in generators

21. Applications High- and medium speed alternators
Direct drive for ultra-accurate position stages and rotary tables
Drives for high speed motors with or without transmissions
Spindles and flywheels

22. Implementations Generators and APU Diesel engine Controller
Gasoline engine
Generator
Dual-input Converter
Generator
Charge controller
Tactical automatic charger
(24V, 1kW, 8 kg)
MIL-standard EMI/RFI protected portable dual-Input diesel generator
(28 VDC, 1.5 kW, 55 kg)

23. Implementations Liquid-cooled motors for heavy electric vehicle
Gear - box
Motor
AT - 25 for EV
(25 kW, 10,500 rpm,
OD=260 mm)
AT gear-box 1: kW for EV

24. Implementations Air-cooled motors for light electric vehicle M300
(300 W 5,000 rpm
0.9 kg, OD=127 mm)
M300 + worm gear (260 W rpm)

25. (accuracy +/- 1”, runout 3um) Ultra accurate rotating optical bench
Implementations
Direct drive rotating stages
Turntable RT -200
(accuracy +/- 1”, runout 3um)
Ultra accurate rotating optical bench

26. Implementations Motor-reducer assembly
Hub wheel-drive for robotics 3kg (50 Nm 50 rpm)

27. Motor Technology Estimation (1999, per VW)
Trans flux
Coreless Axial Flux
TF-
Motor
Eisenloser
Axialfluxmotor
Efficiency
Wirkungsgrad
Switched
Reluctance
Motor
PM-Synchron motor
Asynchronmotor
Status
Serial production
serienmäßig verfügbar
Prototypes
Prototypen vorhanden
Design Phase
Specific power 1 2
Leistungsgewicht [kW/kg]