Electric vans

[bigspark17]

Any body have or thinking about getting an electric van?

im considering the vivaro e. The 50kw battery will do 143 miles which is more than enough for me. With the goverment grant of 20% off zero emmisions vans up to £8000 its coming out at onlu a few grand more than a new vivaro diesel. British made and also a good usefor the BBL. any views?

 

[Ian Mills]

Interesting Ian, at what sort of range are we talking about, electric car milage seems to be very optimistic and not real world, but diesel cars have been around long enough that we all know our true milage with our individual driving styles, I wonder what the Kw charge will eventually be at the road side and not at home?

This is the big question my customer with a Tesla gets free charging at service stations but he was one of there early customers and new customers do not get the same deal, but think they get so many KW per year,normally I think it might be in the range of 6 to 8p per mile. I looked at the idea of a electric van but would not work for me as I can do 2 to 3 hundred KM a day if I have a bad day and a problem other end of where I am working, also do not have the sort of turnover to cover cost.
Just whilst on point of electric cars, have had a problem with the charging on a Zoe, Customer said sometimes when they plug the charger in it does not charge, other times it does, turned out it was a poor earth rod, as ground dried out the resistance increases it must have just been on the edge of working or not, I had not thought about it but a good earth is very important in charging a car as the car is insulated by the tyres, if there is a fault the car will become live, so the system has some test if the earth is not good it cuts the charger out, fitted a second 2M rod and all being okay

 

[ipf]

I had the thrill of riding in this little beauty, a 1959 Ford Prefect that was converted to battery power by my neighbourhood auto electrician, Mr Doring. I recall (probably faultily) that it had 25 HP and a range of 40 miles. It was Sydney in ... err ... well a long time ago.

View attachment 59944

I remember riding in my dad's Prefect.......3 gears and, for then, it went like a bomb. He'd never have swapped that for a milk float.

 

[Timbo]

EV's have got a long way to go before they would be any use for me. I can travel up to 600 miles a day sometimes.
In July I drove 5000 miles in the van at an average of 40mpg (VW Transporter T6.1 auto).
Can't see EV's coming anywhere near what I need. Don't have the luxury of being able to stop for hours to charge up.

 

[pc1966]

One solution to the whole charging issue was to have replaceable battery packs of a standard configuration. So drive in to "petrol station" and robot replaces the battery from underside or similar. 5 min to, in effect, recharge and off you go. No need for a home charger in most cases. Also deals with the whole replacement battery cost as basically your charge/swap covers the power pack.

Of course that would mean some standardisation between rival car companies and investment in infrastructure, both of which seem a little unlikely any time soon

 

[snowhead]

One solution to the whole charging issue was to have replaceable battery packs of a standard configuration. So drive in to "petrol station" and robot replaces the battery from underside or similar. 5 min to, in effect, recharge and off you go.

Nice thought, but no chance.
As you've said that would need agreement, that's not going to happen.
Every manufacturer uses a different configuration of batteries / voltages and the fitment to a car is unique to a specific model even within the same manufacturer.
And changing in a few minutes is out of the question have you seen what they look like.
Not to mention the different types of cooling they all use /will be using.

 

[Gavin John Hyde]

The biggest infrastructure problem is the DNO cables in the ground. Without a major network upgrade I don't see how it can stand a massive increase in load that EV charging will present. Most of the network was installed between the 1930's and 50's and is mainly 16mm² and 25mm² 4c cable, it's interesting looking at the DNO network plans to see how many properties are served off one 16mm² cable along a street and diversity if you can call it that is certainly pushed beyond limits and EV charging will probably be the straw that breaks it's back

Load throttling is the way. Chargers are now using ct clamps to lower the charging load if the house is using more. You can it a charger to a house with 60amp fuse with risking the dno fuse blowing. The wonders of ct clamps.
There is capacity in the network if used correctly.

 

[MJPD29]

You know that Tesla is mulling over the idea of setting up a factory in Derry. In the old Ballykelly Army Barracks

They were originally going to set up in Germany, but the site is too small and they wanted to clear some forest but the Green Party over there won't allow them.

They were also looking to build in Bristol but they are uneasy about Brexit so the idea of Derry, being half in and half out of the EU is appealing

Would be great to see. Couldn't go any worse than Delorean did anyway.

 

[nicebutdim]

Would be great to see. Couldn't go any worse than Delorean did anyway.

I've never liked inward investment schemes as companies tend to use them simply as a means of subsidising production costs. When the money dries up, costs increase and jobs are shed in favour of cheaper labour elsewhere in the world.

Seagate has been an exception to that rule, but I believe that's to do with their founder having a link to the area.

I'd rather see such funds used to invest in local enterprise as company founders will have motivation to ensure jobs remain in the country. Even if such companies go to the wall, at least it would be less likely that the money had been funnelled out of the country.

 

[pc1966]

Load throttling is the way. Chargers are now using ct clamps to lower the charging load if the house is using more. You can it a charger to a house with 60amp fuse with risking the dno fuse blowing. The wonders of ct clamps.
There is capacity in the network if used correctly.

The problem is all those chargers have to be linked, not just CT on the house supply, but back to the local substation to monitor the overall loads on the cable(s). Remember the typical past assumption for house load diversity when sizing the substation and cables is around 3-5kW, not 14kW or more.

So in that sense technology can reduce the risk dramatically, but people have to get used to the idea that their "1 hour" charger might take several hours or even overnight when lots of others are trying to use the supply for EV charge, cooking, showers, etc.

 

[HappyHippyDad]

Having a 2nd house in the South of France is hardly typical ffs.

That made me laugh a lot.

 

[Ian Mills]

Load throttling is the way. Chargers are now using ct clamps to lower the charging load if the house is using more. You can it a charger to a house with 60amp fuse with risking the dno fuse blowing. The wonders of ct clamps.
There is capacity in the network if used correctly.

Load limiters are used a bit in France as a house might have anything from a 15A supply or a 3 phase 15A per phase up to 60A mono phase or 45A 3 phase they work well but I think we need a clever system using smart meters and wifi so,chargers can be turned on and off to balance out load on the system, by electric company's I think the most that can be done is maybe 20% all electric and 30 to 40% plugin hybrids still think changing heating to electric is a easier than changing your car to run on electric, but they is no money savings there and no green brownie points

 

[Mike Johnson]

DPG Quote: "Having a second home in the south of France is not typical"

happyhippydad Quote : "that made me laugh a lot"

Makes me think back to how much you guys charge for your service's and to quote one of the expression used on here a lot "The race to the bottom"

 

[UNG]

Load throttling is the way. Chargers are now using ct clamps to lower the charging load if the house is using more. You can it a charger to a house with 60amp fuse with risking the dno fuse blowing. The wonders of ct clamps.
There is capacity in the network if used correctly.

While load throttling might help it is not the single household that is the big issue, it is multiple households on the already overstretched DNO cable network.
You say "There is capacity in the network if used correctly" I'm assuming you are referring the the network cabling that has in a lot of cases been in the ground for around 80 or so years.
Chatting with some DNO guys a while back after a major power cut as a result of a cable failure and they were saying that it is not that unusual and they are getting cable failures more often because the existing cables can't cope with the normal load even before an EV charging boom

The problem is all those chargers have to be linked, not just CT on the house supply, but back to the local substation to monitor the overall loads on the cable(s). Remember the typical past assumption for house load diversity when sizing the substation and cables is around 3-5kW, not 14kW or more.

So in that sense technology can reduce the risk dramatically, but people have to get used to the idea that their "1 hour" charger might take several hours or even overnight when lots of others are trying to use the supply for EV charge, cooking, showers, etc.

I think you have hit the nail on head, the DNO's diversity would probably be ok during the day but during the overnight charging period it would be way under what is needed to service EV charging.

With most home charging limited to 3 - 7 Kw recharging a 50Kw battery is going to need
a minimum of 6 - 7 hours charge so any sort of smart charging would have to account for this so you have a fully charged vehicle the following day then to put a spanner into that what about the 2 or 3 car households.

Talking to one of my customers recently and a club she belongs to acquired some land adjacent their playing fields to build a car park they have been told for planning permission they need to include EV charging for 1 in 10 of the proposed spaces to comply with some goverment legislation (100 spaces proposed) having looked into it a bit deeper the legislation requires that the infrastructure, which I think could just be ducts has to be installed so EV charging could be extended to 1 in 5 spaces. This car park would only be used at weekends and a few evenings per week and locked when the club is not being used. It is not clear what charging capacity has to be available but if all the points are used at the same time there will be little or no diversity to be applied to the new supply needed and I think it will be an interesting conversation with the DNO as to whether the local network could support this

 

[snowhead]

It is not clear what charging capacity has to be available but if all the points are used at the same time there will be little or no diversity to be applied to the new supply needed and I think it will be an interesting conversation with the DNO as to whether the local network could support this

It works the same as P.V.
The DNO own the Network, if it can't support what the customer is asking for then the customer can't have it, unless they pay towards the upgrade of the network

So if the network won't support the potential load of E.V then that means no car park unless they pay possibly 10's of thousands or even hundreds of thousands towards the upgrades.

 

[UNG]

It works the same as P.V.
The DNO own the Network, if it can't support what the customer is asking for then the customer can't have it, unless they pay towards the upgrade of the network

So if the network won't support the potential load of E.V then that means no car park unless they pay possibly 10's of thousands or even hundreds of thousands towards the upgrades.

I'm well aware of the procedure you ask for a supply the DNO responds with the options and the telephone numbers then you have to find the compromise that both parties are happy with
Done it quite a few times over the years