Electronics > Projects, Designs, and Technical Stuff
Are vortex-coil motors fake?
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Ben321:
Or are they the next step in making more efficient electric motors (which of course would be great for saving the planet with more efficient electric cars)? I saw this video here and it looked interesting. Then I remembered something. The coil configuration he's using is similar to coils I've see in quack-science videos that claimed things like perpetual motion, or even this one website which claims that the coil configuration itself amplifies mystic energies and provides healing powers (having nothing to do with electricity at all).

So that leaves me wondering, is that one video I linked to above which looks legit, really just a carefully crafted video intended to make fake science look real? Or is that motor really running as well as it looks like it's running due to the shape of the coil combined with the signal being sent to it from the function/signal generator?
T3sl4co1l:
No idea what's going on with the solenoid coil.  The toroidal helices I don't see any reason they'd be anything special; if they are in phase sequence then the field will just be a regular multi-pole, "with extra steps" (of the sort a conventional radial-field motor produces).  The complete absence of core means torque is utterly pitiful.

Between the air bearing and the possible support from the solenoid coil (if there's any bias through it), magnets can be levitated, just fine.  Absurd RPMs are readily possible, though I'm guessing part of his problem with starting fires had to do with switching losses (there's a lot of leakage inductance on a winding like that, with such poor coupling to the magnet).  There's almost no torque on a rotating sphere so it doesn't really mean anything.

All you need to demonstrate an induction or synchronous motor is a rotating magnetic field.  Demonstrating a practical one that delivers maximal power given its size and other constraints, requires actual engineering (if you can imagine ;) ).

Tim
ejeffrey:
One thing to remember is that induction or permanent magnet motors can have efficiencies in the 95% range. So anything claiming to improve efficiency needs to be either talking about chasing single digits percentages (more likely a fraction of a percent) or needs to be more specific about what operating conditions they are trying to improve: such as efficiency at very high or low rpm or maintaining efficiency across a large load range.

Take a look at current EV motor efficiencies, they are really good and generally the losses of the battery, charger, and inverter are on the same order.

Anyone claiming an unqualified 10% improvement in efficiency is at the very least leaving out a lot of information.
DBecker:
I was expecting some absurd claims, but that was just a straight-forward video of a guy having fun with a high frequency, very low torque motor design.  It's just the right design to spin a sphere (ball bearing?  rare-earth magnet?) to an extremely dangerous RPM.

I doubt that efficiency is anything special, just like no one is pitching the efficiency of their Halloween Tesla coil.

beduino:

--- Quote from: Ben321 on November 04, 2019, 09:47:28 am ---So that leaves me wondering, is that one video I linked to above which looks legit, really just a carefully crafted video intended to make fake science look real? Or is that motor really running as well as it looks like it's running due to the shape of the coil combined with the signal being sent to it from the function/signal generator?

--- End quote ---

It is a pity, modern  Youtube (Google?) AI algorithms do not show more often this great video made... 44 years ago



by Professor Eric Laithwaite: Magnetic River 1975   :-DD
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