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- Path: sparky!uunet!pipex!unipalm!uknet!edcastle!festival!ajmy
- From: ajmy@festival.ed.ac.uk (A Myles)
- Newsgroups: sci.electronics
- Subject: Re: DC to AC on large scale???
- Message-ID: <30711@castle.ed.ac.uk>
- Date: 25 Jan 93 09:59:58 GMT
- References: <1993Jan21.095254.62979@cc.usu.edu>
- Sender: nntpusr@castle.ed.ac.uk
- Lines: 15
-
- Good ol' blobs of silicon. All the power between France and the UK is
- rectified to DC and then inverted back to AC to avoid several problems
- such as the huge reactive power that would be required to charge and
- dis-charge an underwater cable (not the best way to reactively compensate either
- grid). You can use the 3ph fw-rectifier as an inverter too, depending on who
- is feeding who. Nice.
-
- The fact that we are 50Hz and France is 60Hz might be observed too. :)
-
- See, say, Landers for some nice piccies of this.
-
- This is too expensive for full-scale dc power as the inverter p.f.
- can be pretty poor if the firing angle is too great, and the "blobs"
- of Si are pretty big. Using ac and a transformer to tap-off to small
- local communities is still much cheaper in general, so ac for now.
-