Future of Electric Motors
Future of Electric Motors
(OP)
As everyone here enjoys solving "electrical problems"... Can I rear the ugly old question of... "What's Next"?
What's going on in this ever changing industry that we... as (Electrical People) need to be ready for.
What are you working on? What's next?
Any "heads up"?
John
What's going on in this ever changing industry that we... as (Electrical People) need to be ready for.
What are you working on? What's next?
Any "heads up"?
John





RE: Future of Electric Motors
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
Bill
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"Why not the best?"
Jimmy Carter
RE: Future of Electric Motors
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
Yours
Bill
Bill
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"Why not the best?"
Jimmy Carter
RE: Future of Electric Motors
Switched reluctance motors was the old "new thing" that never really exploded the way some people thought it would. There was a thread on that in the past.
We have heard lots of talk of magnetic bearings and superconducting windings for awhile... I haven't seen any find their way to manufacturer's offerings when we've bought motors recently.... I guess the high tech sexy stuff is reserved for special applications with space/weight constraints that justify the cost. Maybe shop people get involved in a wider variety of motors. I'd be interested to hear about the unique new motors that show up in repair shops.
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(2B)+(2B)' ?
RE: Future of Electric Motors
RE: Future of Electric Motors
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
"..the more, the merrier" Genghis Khan
RE: Future of Electric Motors
Yes, supercooled windings. There were tests running in Västerås in the sixties.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
hope i see one supercoducting machine in the industry, somewhere out there.
"..the more, the merrier" Genghis Khan
RE: Future of Electric Motors
A nightmare to work on though. Litz wire, high frequency, very little insulation for what we have to test them to. Lots of ground faults.
Link
RE: Future of Electric Motors
Permanent magnet motors are not always the best solution.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
On the electronics design front, Functional Safety design is a lumbering elephant on the horizon. Perhaps already pervasive in aviation and automotive, "Proven" operating systems, redundant architectures, voting systems, quantitative FMEA, formal specification languages, all have the potential of fundamentally changing the way we operate.
And on the silicon level, massively parallel architectures will be one of the next big things - chips are already being manufactured with hundreds of parallel processing cores, but the software and algorithms to get the most out of them is still playing catch-up. As we approach physical limits in clock speeds, parallelism will be the next way forward.
RE: Future of Electric Motors
RE: Future of Electric Motors
We were lucky and got stators only. I wouldn't want any part of that rotor.
RE: Future of Electric Motors
I think that the combination drive/motor is important. So, your posts are relevant. You mention the NFO Sinus, and I have been working with the late Ragnar Jonsson. I regret that he passed away a couple of months ago in the midst of testing a modular multi-phase system that can easily be scaled upwards by parallelling modules. The Switch Circuit is inherently a current source and load sharing is extremely well-controlled. The interference-free operation of the Switch Circuit and the excellent torque behaviour at low speeds are the main benefits of that type of a drive.
Ragnars idea was to parallel four modules to form a "plank" that is good for around 50 kW. Four such planks can be combined to form a "square" that delivers 200 kW and four such squares build a "cube" that can deliver 800 kW. Of course, more squares can be added to form 1000 and 1200 kW units.
I think that future drive systems may be built using principles like that. The modularity makes massive use of low-power components, which keeps cost low, and all drives will use the same components, regardless of rated output power so that one-size spare parts fit all drive sizes. Redundancy is inherent and a faulty module can be automatically isolated and then hot swapped.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: Future of Electric Motors
Has anyone tried using something other than AIR for cooling, and to reduce wind losses? Maybe something like Hydrogen. They already do that for large generators, and have for over 50 years.
But it hasen't tranlated to smaller motors or generators.
I think any changes will come down to cost, and value (savings). Variable speed drives is a big step for motors that may not be fully loaded, and are cost competive for motor starters (I haven't priced any, but from what I hear).
I once thought thermoelectric chips would be a big thing, but turns out they are also big energy hogs.
RE: Future of Electric Motors
RE: Future of Electric Motors
http://www.license.umn.edu/Products/Iron-Nitride-P...