Breaking News
Blog

Whatever Happened to Superconducting Power Lines?

NO RATINGS
View Comments: Newest First | Oldest First | Threaded View
D.K.
User Rank
Author
Whatever Happened to Superconducting Power Lines?
D.K.   1/24/2014 12:49:36 PM
NO RATINGS
Don't worry.

After a squirrel or woodpecker punctures the cryo jacket, the lines will meltdown and FEMA will have yet another fire they can't put out.

ChristophZ
User Rank
Author
Re: Gimme a break: Maxwell's Equations have not been repealed!
ChristophZ   1/24/2014 2:39:49 AM
NO RATINGS
Thanks!

I needed this kick into my brain (so it started to think ;-) ) to get a clearer picture.

Brakeshoe
User Rank
Author
Gimme a break: Maxwell's Equations have not been repealed!
Brakeshoe   1/23/2014 3:44:56 PM
NO RATINGS
Oh, Gimme a Break! Maxwell's Equations have not been repealed!

Look at the illustration of the 3φ transmission cable in figure 1, and calculate the shunt capacitance... And then the shunt reactance at 60 Hz.

This is why we don't use underground power distribution cables except for very short distances.

Of course, we can use DC transmission, at last count up to 250kV for underwater cables, but the inverter losses far outweigh any i²R cable losses.

Dan Schwartz
Editor, The Hearing Blog

anon2975164
User Rank
Author
Coming soon ...........
anon2975164   1/23/2014 1:27:51 PM
NO RATINGS
The press likes to jump on whatever bandwagon comes along, especially if it has a catchy name.  Besides superconductivity, there were Bucky balls, nano-anything, stem cells to cure anything from hangnail to cancer, fusion reactors, breakthrough batteries, self driving vehicles, and now 3D printing.  While we're waiting, we'll have to be content with the latest development in new ways to tweet (or is it twitter?). 

Ecspress
User Rank
Author
Distributed Power Generation
Ecspress   1/23/2014 12:27:03 PM
NO RATINGS
I think power transmission will not be the main driver for HTSC development. Advances in distributed power generation and storage (solar cells, fuel cells and batteries) will reduce the demand for bulk power transmission. Of course there will always be demand for power transmission, but I think the growth rate will be slower. Application in electrical machines and electronics will be the main drivers.

amartin212
User Rank
Author
What about STI
amartin212   1/23/2014 12:22:53 PM
NO RATINGS
In their last earnings call they claimed to being filling the first few purchase orders for Conductus wire in multiple use cases?

CraigPatten
User Rank
Author
Well, what did happen to them??
CraigPatten   1/23/2014 11:46:35 AM
NO RATINGS
Dissappointing that you don't actually say what happened to them! I used to follow AMSC. One other interesting product they manufacture is a superconducting motor for navy fast patrol boats.

Most Recent Comments
michigan0
 
SteveHarris0
 
realjjj
 
SteveHarris0
 
SteveHarris0
 
VicVat
 
Les_Slater
 
SSDWEM
 
witeken
Most Recent Messages
9/25/2016
4:48:30 PM
michigan0 Sang Kim First, 28nm bulk is in volume manufacturing for several years by the major semiconductor companies but not 28nm FDSOI today yet. Why not? Simply because unlike 28nm bulk the LDD(Lightly Doped Drain) to minimize hot carrier generation can't be implemented in 28nm FDSOI. Furthermore, hot carrier reliability becomes worse with scaling, That is the major reason why 28nm FDSOI is not manufacturable today and will not be. Second, how can you suppress the leakage currents from such ultra short 7nm due to the short channel effects? How thin SOI thickness is required to prevent punch-through of un-dopped 7nm FDSOI? Possibly less than 4nm. Depositing such an ultra thin film less then 4nm filum uniformly and reliably over 12" wafers at the manufacturing line is extremely difficult or not even manufacturable. If not manufacturable, the 7nm FDSOI debate is over!Third, what happens when hot carriers are generated near the drain at normal operation of 7nm FDSOI? Electrons go to the positively biased drain with no harm but where the holes to go? The holes can't go to the substrate because of the thin BOX layer. Some holes may become trapped at the BOX layer causing Vt shift. However, the vast majority of holes drift through the the un-dopped SOI channel toward the N+Source,...

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed