Post by colinf on Dec 31, 2018 1:56:11 GMT 12
I came across this article on the Toshiba Global website about the re-emerging use of DC for long distance power transmission, and thought I would share it with you.
www.toshiba-clip.com/en/detail/4794 AMR-iFi R&D
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Post by neilsan on Dec 31, 2018 7:48:31 GMT 12
Thanks Colin.Why aren't you out playing in the snow!
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Post by colinf on Dec 31, 2018 9:14:41 GMT 12
Because there isn’t any! Out walking on the beach though. It’s unusually mild here, 10c, very misty. Perfect for thoughts about DC transmission.
AMR-iFi R&D
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Global Moderator
Power transmission: DC or AC? Dec 31, 2018 10:04:48 GMT 12
- Edited Dec 31, 2018 10:07:44 GMT 12 by michaelw
Post by michaelw on Dec 31, 2018 10:04:48 GMT 12
didn't tesla and edision settle this about 100 years ago ?
 what about wireless transmission ? good to read about a tech company other than huawei... 
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Connoisseur
Power transmission: DC or AC? Dec 31, 2018 19:43:38 GMT 12
- Edited Dec 31, 2018 19:46:19 GMT 12 by colinf
Post by colinf on Dec 31, 2018 19:43:38 GMT 12
I suspect it has something to do with the inductance of long runs of cable. For local power distribution AC is better as it requires only nearby transformers to provide household electricity. For very long runs of cable (say over 1000km) the inductance attenuates 50Hz AC, and so high voltage DC can be far more efficient.
100 years or so ago, Tesla's AC system worked as the technology to convert high voltage DC for household use didn’t exist, and switches and relays had a very hard time switching Edison's DC due to the huge arc produced over the contacts. So now that the technology exists to convert high voltage and high power DC to AC for local distribution, it might emerge that both Edison and Tesla were right, for different aspects of power transmission. 😴😳🙄😀 AMR-iFi R&D
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Global Moderator
Power transmission: DC or AC? Dec 31, 2018 23:33:41 GMT 12
rmc001 likes this
Post by michaelw on Dec 31, 2018 23:33:41 GMT 12
years ago ps audio produced a good doco on power
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