manqiangrexue
Brigadier
Oh shit, in a couple weeks when she decides staying home with nothing to do isn't for her, the Hooters down the street's gonna get a lot weirder...
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- Thread starter bd popeye
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This is why he respects Xi — the only one who doesn’t bend down like a prison wife when he threatens tariffs and retaliations.
Bro think this is a real photo lol
Picture him in a dirty old wifebeater and dirty unwashed briefs all full of holes, heavily stained in both back and front, raising his fists against all his numerous deadbeat wives on their knees. They cower in fear at the sight of his unwashed glory. Meanwhile he's pimping out his two Asian wives (South Korea and Japan), having them turn tricks to make him cash. AI needs to make this meme image real.
There's a bigger analogy to be made here with Taiwan and China, the neighbors across the street, but I haven't figured out a good one for that yet.
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Well... Western carmakers do innovate to bypass neodymium magnets by using magnet free motors.
From Grok, for example:
The BMW iX3 and other next-generation EVs utilize a magnet-free externally excited synchronous machine (EESM), which generates a magnetic field using electric current instead of permanent magnets containing REEs like neodymium and dysprosium. This technology has been in production since at least 2023 and is expanding across their EV lineup.
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Yet their sales don’t appear all that high compared to a BYD or Great Wall. If the cars are too expensive in the western side for anyone to buy, that innovation is pointless and simply confirms even more that Chinas dominance in rare earth process is what can make or break a market if China decides to provide them or not
EESM is just a variation of induction motor with coils actively driven by a DC source so it can achieve higher field strength than just by induction, but like induction motors its still basically using an electromagnet in place of PM, it still need to dissipate massive amount of power in the electromagnet coils, requires much greater cooling, and thermal limits inherently still limits the actual achievable field strength and torque. This is esepcially a problem since field strength is proportional to current, not voltage, and conduction loses is proptional to I^2, which is why you usually want higher voltage for efficency.
What you can do is to jack up current in the coils for a short period to give the illusion of higher toque and thermal throttle down the motor after you get into cruise. The range and power problem are still there but you can pretend to have more torque for launch control.
EESM is also more expensive than induction motors since you now need a high power coupling to drive the rotating rotor, and you need a secondary circuit to control the rotor eletromagnet. Tesla used to use induction motors, they've since moved onto PMSM, EESM is a compromise that some people think is best of both worlds, but can easily become worse of both worlds
As we all know European EVs are not exactly very good: it's both expensive and has poor performance, EESM or induction motors might lets you build a motor without RE, but you're not going to compete with objectively superior technology made using objectively more advanced materials.
EESM and induction motors aren't new idea, they're old ideas people abandoned when PMSM came around, but Europeans are nothing but good at branding, they can go back to steam engines and still find a way to brand it as innovation.
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They can always reroll another planet or star system.