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Next-Gen Axial Flux Motor / Generator

The Magnax Axial Flux Machine introduces a new generation of electric generators and motors helping innovators in electric vehicles, machinery and power generation to build lighter and more efficient products.

6 years of research and technology development on high-efficiency axial flux technology and 3 years of prototyping/DfM in collaboration with customers, resulted in a new technology for cleantech markets. 

Magnax Direct Drive Motors and Generators have an unparalleled power density resulting in much lower overall weight and size, while the efficiency is the highest in the market (96% and more).

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Compact and Lightweight Direct-Drive Generators

Typical
Radial Flux
Direct Drive

radial vs axial flux direct drive generator.png

Magnax
Axial Flux 
Direct Drive

  • For similar power:
  • 50% to 75% lighter than radial flux direct drive machines.
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Extreme Power Densities for Motors

Magnax High-Speed Axial Flux Motors deliver peak power densities up to 15 kW/kg. 

  • A patented system for cooling the windings, for the lowest possible stator temperatures.
  • Dual permanent magnet rotors, for the highest possible torque-to-weight ratio.
  • Yokeless stator, for the shortest possible flux paths and a lower overall weight.
  • Rectangular section copper wire, for the highest possible copper fill factor (90%).
  • Concentrated windings, for the lowest possible copper losses (no coil overhangs).
  • Grain-oriented electrical steel, lowering the core losses by as much as 85%.
  • Patented methods for large series production.

Impact of the Technology

AXF275 kl

Magnax AXF225

Yokeless Axial Flux PM motor

Weight: 14 kg

Peak Power: 170 kW

Peak Torque: 250 Nm

 

 

Peak Power Density:
12,1 kW/kg

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BMW i3 motor

HSM Radial Flux PM motor (internal code EMP242)

Weight: 41 kg

Peak Power: 125 kW

Peak Torque: 250 Nm
(Source: Oak Ridge National Laboratory US DOE Vehicle Technologies Office)

Peak Power Density:
3,0 kW/kg 

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Machine Stacking

Multiple Magnax Axial Flux Machines can be stacked to deliver the torque and power you need, while keeping the diameter limited.

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From Small To Big

Magnax Axial Flux Motors have an inherently scalable design, from small to large diameters and from low rpm to high rpm speed configurations.

Series Production

 

The Magnax machine production process (core production, winding, busbar welding, magnet glueing, final assembly, etc.) is done via standard manufacturing methods. 

 

This is essential for high volume production at the lowest cost possible. 

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Magnax Axial Flux Direct Drive Generators and Motors