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DC for Ev stations

lyledunn

I note some interest in developing DC charging infrastructure where the DC ultra-fast chargers have multiple spaces instead of the usual two. It appears that car parks can be completely populated with units fed from the DC output of the central source and then load managed as appropriate. This will mean substantial DC fixed wiring. 
dhttps://youtu.be/SX7FrWDGhUk

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    DC ultra-fast chargers have multiple spaces instead of the usual two

    Nice idea - certainly useful where you have lots of spaces but only a few vehicles that need a rapid charge at any given time. I can see it struggling where there are lots of vehicles wanting a rapid charge at the same time (e.g. motorway services or supermarket carparks) and can't really see the advantage over multiple relatively simple a.c. charger points where vehicles are likely to be parked for a significant length of time (e.g. overnight at hotels), but certainly useful for some niche situations.

    The cabling could well be interesting - presumably it'll have to be quite chunky to satisfy sensible voltage drop requirements at that sort of power, and a lot of it to feed multiple bays.

       - Andy.

  • 0 in reply to AJJewsbury
    AJJewsbury said:
    Nice idea - certainly useful where you have lots of spaces but only a few vehicles that need a rapid charge at any given time. I can see it struggling where there are lots of vehicles wanting a rapid charge at the same time (e.g. motorway services or supermarket carparks)

    Andy, yes you'd think - the transformers being installed to power "a few charging points" in this way at filling stations or motorway services are in the MVA ratings order of magnitude ... but it is happening, these are being installed, with larger or multiple transformers for motorway services.

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  • 0 in reply to AJJewsbury
    AJJewsbury said:
    Nice idea - certainly useful where you have lots of spaces but only a few vehicles that need a rapid charge at any given time. I can see it struggling where there are lots of vehicles wanting a rapid charge at the same time (e.g. motorway services or supermarket carparks)

    Andy, yes you'd think - the transformers being installed to power "a few charging points" in this way at filling stations or motorway services are in the MVA ratings order of magnitude ... but it is happening, these are being installed, with larger or multiple transformers for motorway services.

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