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4hv.org :: Forums :: General Science and Electronics
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solid state phase converter

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ubuntupokemoninc
Thu Dec 09 2010, 02:34AM Print
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
Link2

found this on google images, is it "reasonable" to be able to run a 3 phase 12 mot stack off this? with obviously a bicker brick of IGBT?

if not maybe a 6 stack, plus this picture is such a bad resolution on my monitor i can't read the components, maybe some one with a better monitor, could make this schematic readable on a crt.

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Arcstarter
Thu Dec 09 2010, 03:13AM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
What is the point of using three phase? People usually use 3 phase because you can get more power. With three phase with MOTs you have to rectify each phase, anyway. If you are using single phase to power a 3 phase converter, you won't get any more power than with single phase.
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Steve Conner
Thu Dec 09 2010, 10:36AM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
That schematic is incomplete anyway. The hard bit is missing, the DSP that generates the waveforms.
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radiotech
Thu Dec 09 2010, 07:15PM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
If you look back in the history of electrical
power transmission, you will see that Edison
invented the 3-wire balanced circuit which
reduced the pounds of copper per watt
needed.

The polyphase power system can transmit
more power per pound of copper than the
single phase system can.

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ubuntupokemoninc
Thu Dec 09 2010, 09:57PM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
can some one tell me were i can get a good schematic then?
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AleSeg
Fri Dec 10 2010, 10:10PM
AleSeg Registered Member #2727 Joined: Tue Mar 09 2010, 02:39PM
Location: Montevideo - Uruguay
Posts: 33
Error:
Radiotech said:
"If you look back in the history of electrical
power transmission, you will see that Edison
invented the 3-wire balanced circuit which
reduced the pounds of copper per watt
needed."
Tesla was who invented the 3-wire systems. And was in a fight with Edison, who sustained that DC were better than AC.

Cheers
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Steve Conner
Sat Dec 11 2010, 03:22PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
No, this is the 3-wire DC system, with one neutral and two wires carrying + and - 110V DC.
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