Model 3's Reluctance Motor to appear in the Model S?

[dirty_harry]

That would make totaly sense to me, since it's a superior motor...
Has anyone heard something that would indicate such a thing?


Cheers Harry

 

[Muzzman1]

From reading about the physics of the 2 different types of motors, the reluctance motors are power limited, the induction motors are not.
Sorry, it was when they announced model 3 has reluctance motors I read that so my source is long gone.

 

[Shock-On-T]

That would make totaly sense to me, since it's a superior motor...
Has anyone heard something that would indicate such a thing?


Cheers Harry

Might not be superior in every way, eg. longevity, max output, serviceability, material greenness, and so on.

 

[Alpaca]

Model 3 dual motors have inductance motor in front - so not two reluctance - my guess is max power is more limited in reluctance design - but it is more efficient, less weight, lower cost, less moving parts so probably more reliable, no/or less rare earth magnet - the complexity is in the control electronics and software.

 

[CAF]

Induction motors are probably more robust long term. Cooling is very important for the magnets in the reluctance motors. If the magnets get too hot, they're toast.

 

[dirty_harry]

i got this from wikipedia:
“Musk said that the Semi would be powered by four electric motors of the type used in the Tesla Model 3.“

so, power doesn't seem that much of a problem...?

 

[dirty_harry]

And is found this from one of Elon's Tweets:
AC induction front & switched reluctance, partial permanent magnet rear. Silicon Carbide inverters in both. Performance drive units are lot sorted for highest sigma output & get double the burn-in.

 

[scaesare]

I believe one of the factors in making the front second motor in the AWD 3's an induction type is that it can be easily put to "torque sleep" in cruise conditions for efficiency purposes.

An SWPRM motor like in the rear of the 3 tends to not freewheel smoothly, but rather will "cog". There's some tricky waveform shaping in the pwer electronics that smooth this out under power... but that means if both motors were SWPRM neither could ever sleep.

 

[Krash]

So if the S and X remain AWD, why wouldn't they put the induction motor in the back (for power) and the SWPRM motor in the front (for efficiency) in those models? I understand that for simplicity in manufacturing the 3 will likely always have it the other way around.