Phasing nightmare

[Michael Smith]

Fun wiring that, then.

its called a sparky i aint wiring over 5 miles of cabling
plus a plumber to do the drains and water

but i would need to call the council to get them hooked up (£5-20k each i think)

 

[Michael Smith]

anyway, back to the topic, how can i make a power system that will do all power ranges between 200V and 500V
Amps of up to 200A
50HZ
and both single and 3 phase??

 

[Silly Sausage]

anyway, back to the topic, how can i make a power system that will do all power ranges between 200V and 500V
Amps of up to 200A
50HZ
and both single and 3 phase??

You need a 4 phase board.

 

[Michael Smith]

just throwing it out there again...... recirculating power source (itll power itself)
lets say i got a power car battery (12V) and a starter motor..... would it work if i welded the shaft 'open' or 'engaged' and changed the gear for a toothed pulley, then connected that to a 48V alternator, connected that to a battery pack (charging at around 50V), then done the same over and over that i did with the 12V battery until i got to 240V then plugged it into a battery charger to charge the 12V battery..... would that work or not.... if you want to say no, then show me an example of the calculation starting with the 12v battery.... thing is i know this WILL take time to do your reasearch correctly..... i didnt ask if the 12v battery would die by the time the 240V charger kicked in, im asking would a system like this run at least?

 

[Michael Smith]

just throwing it out there again...... recirculating power source (itll power itself)
lets say i got a power car battery (12V) and a starter motor..... would it work if i welded the shaft 'open' or 'engaged' and changed the gear for a toothed pulley, then connected that to a 48V alternator, connected that to a battery pack (charging at around 50V), then done the same over and over that i did with the 12V battery until i got to 240V then plugged it into a battery charger to charge the 12V battery..... would that work or not.... if you want to say no, then show me an example of the calculation starting with the 12v battery.... thing is i know this WILL take time to do your reasearch correctly..... i didnt ask if the 12v battery would die by the time the 240V charger kicked in, im asking would a system like this run at least?

would a surge suppression kit help with spikes if the only battery was the 12V and everything else was linked either by belt or by cable to one another?

 

[Michael Smith]

You need a 4 phase board.

never knew they existed :/
if thatll sort the phase question i asked originally then thanks

 

[Michael Smith]

would a surge suppression kit help with spikes if the only battery was the 12V and everything else was linked either by belt or by cable to one another?

im thinking for safety while starting id put soft start controllers in to help the starter motors from snapping the belts at full torque and revs, i know that thatll happen ONLY at start up but its still good to know the belts are not going to snap the second you turn it all on or after a power failure

 

[trev]

just throwing it out there again...... recirculating power source (itll power itself)

You can't take a telling can you? IT WON'T WORK! IT REQUIRES AT LEAST 101% EFFICIENCY AND THAT DOESN'T EXIST!

 

[snowhead]

anyway, back to the topic, how can i make a power system that will do all power ranges between 200V and 500V
Amps of up to 200A
50HZ
and both single and 3 phase??

Ring your local D.N.O and ask for a standard 3 phase 415v connection, they'll give you the 230v supply for free, but will want paying for electricity used of course as it really does cost money to generate electricity.

 

[Michael Smith]

You can't take a telling can you? IT WON'T WORK! IT REQUIRES AT LEAST 101% EFFICIENCY AND THAT DOESN'T EXIST!

do the research....... i know for a FACT that a 12VDC starter CAN run a 48V alternator :/ all you need is the torque to turn the alternator..... which the starter can do as it can start 6L V8 diesel engines with ease


if you think im wrong then show a detailed calculation of how you came to the conclusion the 12VDC motor WONT be powerful enough to turn a 48V alternator at its required revolutions

 

[shanky887614]

do the research....... i know for a FACT that a 12VDC starter CAN run a 48V alternator :/ all you need is the torque to turn the alternator..... which the starter can do as it can start 6L V8 diesel engines with ease


if you think im wrong then show a detailed calculation of how you came to the conclusion the 12VDC motor WONT be powerful enough to turn a 48V alternator at its required revolutions

ah but a 12v starter only ignites the fuel so it doent need to be powerful enough to turn the engine because it doesnt.

it works by expanding gases when fuel is compressed/ignited depending on petrol or diesel

 

[trev]

Mate I'm a qualified electrician with 34 years under my belt. I have an enquiring mind and know how things work. Your scenario wouldn't because it requires the constant application of more power than can be deivered. A starter works because immediately after the engine starts it takes over from it. The starter does exactly that. Starts.
You're obviously not prepared to listen to some very clever people (myself excluded from that) who have told you that what you're proposing is a pipe dream so I'm done here.

 

[trev]

8 pages of all kinds of people telling him somethings impossible and we're the ones talking rubbish, why aye bonny lad. Crack on, have a talk to that Polish clown, you'd get along great with him.

 

[Besoeker]

do the research....... i know for a FACT that a 12VDC starter CAN run a 48V alternator :/ all you need is the torque to turn the alternator..... which the starter can do as it can start 6L V8 diesel engines with ease

With respect, that's a total irrelevance.
Have you looked at the pinion on a starter motor and the flywheel with which it engages?
"Give me a long enough lever and a suitable fulcrum and I shall move the world."
Usually attributed to Archimedes.

 

[Michael Smith]

ah but a 12v starter only ignites the fuel so it doent need to be powerful enough to turn the engine because it doesnt.

it works by expanding gases when fuel is compressed/ignited depending on petrol or diesel

you clearly are not a trained mechanic :/
for starters.... a starter motor doesnt ignite fuel..... it only spins the engine fast enough for the combustion of the fuel/air mix to ignite, meaning the 'engine' takes over (starter 0-600RPM, engine 400RPM+)
the starter has to overpower the engine when the pressure gets to its peak.... ie at BTDC where chamber pressures will not be as great as when the engine is running through combustion but still pretty high and the faster the engine spins the higher those pressures get but luckily they will be met for a shorter period the more RPMS the engine is turning at
why do you think when you start your car up it sounds more like a 'pulse' than a smooth turning motion...... the drop is the high pressures 'slowing' the motor or.... putting load on it