sicetaitsimple wrote:Remundo wrote:can you imagine that I am in the middle of thinking about this subject to equip a car park...
let's reason on 10 places: if I want to give 10A to each place, that makes me explode the subscribed power.
I will have to put an electronic system for supervising electrical outlets with priorities... a load shedding system...
Well, it all depends on what clientele this car park is intended for. Between a hotel, for example, where charging will be done more at night with no intention of going to wake up the customer at dawn to ask him to move his vehicle and a shopping center that operates on the day when the maximum turnover will be researched, I think there are possible differences in terms of design and pricing.
That said for your example, 24kVA is about 350€/year of subscription, or 1€/day. Not the sea to drink either.
Forhorse wrote:If it's for a load that can last all night, 10A is enough.
Then you have to see if the 10 sockets will potentially be used at the same time or that there will be a "proliferation" which means that ultimately only part of the total power is necessary.
There is also the possibility of load shedding but this is not possible with a simple socket, for that you need a terminal which allows you to modulate the charging power (with the advantage of being able to charge faster if more power is is available) but it is no longer the same installation price... not sure that it is more profitable with respect to a larger EDF subscription.
10 terminals + the supervision system to manage the power between the terminals is easily €15.000 and you need a subscription of 10x6A = 12kVA or €17 monthly
10 reinforced sockets without power management is 1500€ and you need a subscription of 10x10A = 20kVA so 24kVA or 28.28€ monthly
In short, it takes 100 years to make the savings on the subscription profitable by installing terminals
who knows companies that make this kind of driver software and the hardware that goes with it?
For my part I read docs on cascadocyclic load shedders, but in my opinion it's a bit crude as a method, even if it could work.