Magnax High-Speed Axial Flux Motors
Extreme Power Densities
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- 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%
You mean like this? Or did I maybe dont understand the meaning of your work "end bells" correctly? Not native english speaker so I struggle with technical english terms.AussieRider wrote: ↑Apr 22 2018 7:16amLooks to me like the "end bells" are the rotors, supported by 2 closely spaced roller bearings.
AussieRider.
Hi guys,
Thanks for the comments.
I removed the in-wheel picture from the website since it gives people the impression that we do in-wheel powertrains. But we only deliver the AF motor. How customers implement the motor (in-wheel or chassis) is their choice.
The first motor we are going to release is the 265 mm version. This one will have the following specs:
- 5500 RPM
- 265 mm motor diameter
- 86 mm motor length
- Peak power: 300 kW
- Nominal power: 150 kW
- Peak Torque: 521 Nm
- Nominal Torque: 250
- Efficiency at nominal power: 91%, Peak eff. 98%
- Dry mass: 22,5 kg
- Cooling: water
So this gives a power density of 6,7 (nominal) and 13,3 (peak).
The reason why our power densities are so high is because of a new patented cooling system (which seems to be very effective and results in significant higher current density in the windings) and the use of grain oriented electric steel. (much higher flux density in the magnetic cores). And torque = proportional to current density x flux density.
Kind regards,
Daan
Oh my. I can think of several cool applications for such a beast.The first motor we are going to release is the 265 mm version. This one will have the following specs:
- 5500 RPM
- 265 mm motor diameter
- 86 mm motor length
- Peak power: 300 kW
- Nominal power: 150 kW
- Peak Torque: 521 Nm
- Nominal Torque: 250
- Efficiency at nominal power: 91%, Peak eff. 98%
- Dry mass: 22,5 kg
- Cooling: water
So this gives a power density of 6,7 (nominal) and 13,3 (peak).
macribs wrote: ↑Apr 24 2018 5:56amOh my. I can think of several cool applications for such a beast.The first motor we are going to release is the 265 mm version. This one will have the following specs:
- 5500 RPM
- 265 mm motor diameter
- 86 mm motor length
- Peak power: 300 kW
- Nominal power: 150 kW
- Peak Torque: 521 Nm
- Nominal Torque: 250
- Efficiency at nominal power: 91%, Peak eff. 98%
- Dry mass: 22,5 kg
- Cooling: water
So this gives a power density of 6,7 (nominal) and 13,3 (peak).
Still trying to fully grasp what sets this type of motor apart from bldc, induction, pm etc. If them claims are not drunken ramblings clearly they are doing something right. Is that the case for most axial flux motors or their take in particular? Meaning does other makers of this type of motors come close to them numbers? What about manufacturing costs and production costs of this motor vs other electrical motors? More or less money put into raw material, machining and labor costs for this type of motors?
Can the power & weight be any where near true numbers? No numbers left out, or maybe a DOT sign was forgotten?
The 75-7 is about the same weight with about 75 kw peak output if tweaked well on dyno with some effort on the controller. This Magnax motor, larger diameter, about same case length and close to equal weight as the 75-7 motor output peak power 4 times greater, with insane 3 times the torque. And the efficiencies are high too, well i guess they better as the other numbers are so high.
Is there anything remotely true to these numbers?
If so, what makes the Magnax motor so great? I mean huge power in a rather small package with feather weight vs power output.