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Hi,
It looks like there are 3 Phase to Single phase converters manufactured in Australia. (Who'd a thunk it!)
The company is called Polyphaz POLYPHAZ Single to Three phase converters
Here is a link to their Polytranz 415V 3Phase to 240V Single phase transformer.
Three phase to single phase transformers
Can't see any motors here.
Yes, but don't forget that you won't have a DC converter at every place.If we had DC charging then we wouldn't really give a damn about the number of phases, voltage, or current available from the utility supply. We would simply have a universal device that rectifies the AC and feeds it to the car in the appropriate voltage for the on-board charger. I think it's interesting that in Japan you are beginning to see widespread CHAdeMO deployments often with no AC sockets available on site. I'm not suggesting that we will all have a ultra-high power DC supply at home, simply that having a DC connector would allow the car to receive energy from any power source worldwide and address the issues we now face with multiple AC standards.
not at all, you carry it with you.... low power versions could be cheap. The great thing about it is that you could 'feed' the AC-DC converter from any AC supply.Yes, but don't forget that you won't have a DC converter at every place.
low power version don't have to be... the big advantage is that you can cope with 1-phase, 3-phase etc with a universal AC-DC device not by re-engineering the car for each market.But then we are bound to an external charger and those are expensive.
Sorry, forgot J1772... make that 6 different connectors.Here in the UK we now have in the "wild" UK Standard, "CEE", Tesla, Mennekes, and CHAdeMO.... so 5 different connector standards and NO 3-phase support.
no problems - as long as you are plugged in
Yes, that was what I meant.not at all, you carry it with you.... low power versions could be cheap. The great thing about it is that you could 'feed' the AC-DC converter from any AC supply.
That's what I assume. But that yields the question how much energy is used for heating the cells 30°C (~50F) higher than the outside temperature...
converting 3-phase to 1-phase make no sense. you have to rectify the 3-phase to DC. If you convert DC to 1-phase. then the charger in the car has to rectify again back to DC. You make an extra step with additional conversion loss.
Uhm, I might be missing something here:Eberhard, I do not totally agree that it makes no sense (apart from the method of converting 3-1 phase). Rectifying 3-1 phase provides you in this case 1.73 times the fused current (16 amps in my case). This means instead of charging the Tesla with 16 Amps resulting in 14 hours load times to 1.73*16=27.7 Amps resulting in theoretical ~ 9 hours charge time. Off course depending on the method of converting the 3-1 phase there will be more or less loss. Let's assume a high loss 20% ?? still leaves me 6 Amps extra, shaving off 2-3 hours of charging time.
Here in Holland 3x16A is everywhere, gas stations, restaurants, offices, warehouses, etc. I'm planning to make some pictures with my phone and geotag them, just to show how many of those outlets I see in my daily trips around the city (On my bicycle )