The thesis I will be working on when I go to grad school with be cooling the motor directly in the air gap...
Regards
Hubert
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The thesis I will be working on when I go to grad school with be cooling the motor directly in the air gap...
Regards
Hubert
Yes but there's plenty of work left to do as they haven't made all the relevant correlations to frequency and windage yet. I wont cant share them at this point as they are my thesis. My design also does not submerge the entire machine in coolant but rather isolating it to only the gap
Heres a photo of on e of my stators cooled to -29 celcius.
Nice...Dual stack? stators or complete machines in tandem? In tandem u may be able to tie a wye and delta motor in series as long as the wye coils are left open ended. This allows for harmonic mitigation and one inverter for two machines. The windings and current capabilities would need to be matched in the machines at a winding ratio of the square root of 3. and sqrrt3/2 if you start paralleling coils. U can also tie two wyes together serially as long as one is wound with open ended coils but there will be no harmonic attenuation with that just two wye motors running off one inverter. I will send you some papers if you are building the machines. U see the ATE design inspired lamination here in the photo. No one has this. Its was sent direct from my colleague who holds several patents in motor and fuel cell design and well as aircraft instrumentation. We are not eye to eye about some other issues currently. However this was a gift from him.
Regards
Hubert
DHX only cools the outer coils/gaps. They don't spray cool the inner rotor.
Being able to change the # of poles is really neat, especially if you can reduce back EMF at higher speeds.
I recall that someone put a Nissan Leaf motor they got from a wrecked car into a Mercedes W115 in place of the original four cylinder and backed it up with a Ford three speed. Apparently adapter plates and kits for attaching them to standard manual gearboxes are becoming more common and may help mitigate the previously mentioned problem of limited RPM when using a drive shaft. The gearbox could also be shifted with a "clutch" switch that just let the motor freewheel. I tried to find the video series but it seems they were removed from youtube.
I think as more electric cars wind up in junkyards we will get a steady supply of motors for these swaps. Tesla might be hard though given that they have been known to buy up wrecked cars to squash a used parts market.
I wouldn't doubt they'd do something that greedy. The Mercedes ecars are equally outstanding nevertheless. Id rather have the Benz personally. They've been a great company to work for. That's real. I can personally say from the front line we put alot into it. Thats no bs its quality work and craftmanship that goes into what we and they do over in Germany.