Search found 933 matches

by T1 Terry
Sun, 01 Sep 2019, 10:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2520

Re: Tesla PW2

I have been thinking about how to do this. As you said most solar panel strings would be able to feed the car battery directly. And most solar inverters I assume would have a 400 or so volt bus. So it may be as simple as just connecting the car battery to the internal bus and reprogramming the inve...
by T1 Terry
Sun, 01 Sep 2019, 10:44
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

Re: 3 phase supply but no 415v connections

Hmmm..... that 3 phase hybrid inverter won't do the job if it can only provide 3.3kW because there is a single phase monster ducted air con unit that can suck a peak 26.4 amps... That's OK, just don't put it on the essential loads output. Because it's a hybrid, the grid will supply some of it and s...
by T1 Terry
Sat, 31 Aug 2019, 14:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2520

Re: Tesla PW2

Plan C would be to have two electric cars with 40kwh+ battery each and when supply is too low run off the car battery. When car is getting low you can go to a fast charger and recharge. If you use say 12kwh/day your car batteries would keep you going for about a week. Then you need the inverter tha...
by T1 Terry
Sat, 31 Aug 2019, 11:54
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

Re: 3 phase supply but no 415v connections

Hmmm..... that 3 phase hybrid inverter won't do the job if it can only provide 3.3kW because there is a single phase monster ducted air con unit that can suck a peak 26.4 amps according to the specs label. 3.3kW is barely enough to feed a 15 amp supply single phase. The next option seems to be this ...
by T1 Terry
Fri, 30 Aug 2019, 15:38
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

Re: 3 phase supply but no 415v connections

It would be replacing the grid tie 3 phase inverter that is already there. I think as long as the system remains at 5kW of solar and the battery does not try to feed back into the grid, there shouldn't be a problem. Would we even have to tell them? Now I'm back into the area I know bugger about, 3 p...
by T1 Terry
Fri, 30 Aug 2019, 14:19
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

Re: 3 phase supply but no 415v connections

OK, I've found yet another option, the 3 phase MPI hybrid 10kW inverter/charger/solar controller/grid tie unit all thrown into one box. One of these things https://www.mppsolar.com/v3/mpi-hybrid-series-2/ They say these units can be paralleled, but a house that required more than 10kW continuous and...
by T1 Terry
Fri, 30 Aug 2019, 12:32
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2520

Re: Tesla PW2

The bother in law does have a mix of solar and hydro to charge his house battery. It is a very old Telecom lead acid battery so it doesn't hold capacity well, so must be recharged daily. He lives on the side of the Huon Valley in Tasmania, about as far south as most would live full time and Tassie i...
by T1 Terry
Thu, 29 Aug 2019, 15:18
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2520

Re: Tesla PW2

So the original grid tie inverter would have to be removed to be able to fit the Powerwall? Here in South Australia, as soon as you touch anything to do with a grid tie system, the whole thing has to be renegotiated and generally results in a much smaller feed in tariff. The 6kW solar and 15.5kWh ba...
by T1 Terry
Thu, 29 Aug 2019, 15:02
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 34
Views: 2520

Re: Tesla PW2

Doesn't the Powerwall have a hybrid inverter built in to it? Do you already have grid tie solar?

T1 Terry
by T1 Terry
Thu, 29 Aug 2019, 13:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

Re: 3 phase supply but no 415v connections

The benefit of using 3 x single phase inverters is each would have an idle shut down capability where it wouldn't if they were linked to product 3 phase or paralleled to increase the capacity, so possibly not as much loss on standby. The down side is the need for 3 inverters rather than 1 or 2 inver...
by T1 Terry
Thu, 29 Aug 2019, 12:26
Forum: Renewable Energy and Storage (Non-EV)
Topic: 3 phase supply but no 415v connections
Replies: 20
Views: 449

3 phase supply but no 415v connections

I have had an inquiry about setting up a house off grid, but they want to remain with grid back up for 12 mths just to certain they have enough solar and battery capacity. The switch board appears as though 3 phase power is supplied to the premises, it has a 3 phase back to grid inverter that unfort...
by T1 Terry
Tue, 27 Aug 2019, 10:30
Forum: Charging Infrastructure
Topic: 3 phase outlet, what is suitable for EV charging?
Replies: 16
Views: 479

Re: 3 phase outlet, what is suitable for EV charging?

Thankyou all for your replies. That transformer does connect into the supply cables for the rest of the street, but all of those places were already supplied by the SA grid and transformers. Probably something to do with balancing the phases or what ever. The other white conduit goes to the workshop...
by T1 Terry
Mon, 26 Aug 2019, 12:48
Forum: Charging Infrastructure
Topic: 3 phase outlet, what is suitable for EV charging?
Replies: 16
Views: 479

Re: 3 phase outlet, what is suitable for EV charging?

So, that would be the circuit to supply one or more 3 phase EV chargers? I never did get my head around how 3 phase converted to watts, 22kW appears to be the biggest expected demand, would this cabling and circuit breaker be sufficient to supply 2 units at the max expected 22kW output running simul...
by T1 Terry
Sat, 24 Aug 2019, 12:46
Forum: Batteries, charging, management and monitoring
Topic: HELP PLEASE I think I killed my cells
Replies: 27
Views: 791

Re: HELP PLEASE I think I killed my cells

You can buy a cheap 12v car battery charger with a low output and connect it across 4 cells in series. It will keep cutting out on overload but that doesn't really matter because that will slow the recharging even more. I've rescued cells from as low as 0.4v, a 400Ah 12v pack with a total voltage of...
by T1 Terry
Sat, 24 Aug 2019, 12:32
Forum: Charging Infrastructure
Topic: 3 phase outlet, what is suitable for EV charging?
Replies: 16
Views: 479

Re: 3 phase outlet, what is suitable for EV charging?

I can't read anything on the transformer name plate, the markings are washed out, but I took some photos Nameplate.jpg Transformer on pole.jpg The cables into the workshop go through that white plastic pipe and underground to the main fusebox. The circuit breaker and cable I'd be most interested in ...
by T1 Terry
Fri, 23 Aug 2019, 12:48
Forum: Other
Topic: e-nv200
Replies: 8
Views: 1669

Re: e-nv200

With that sort of range even under their "Worst case scenario" in the follow up video, 290km, we could get from Mannum to Adelaide and back on a charge with a load. This might be the next workshop vehicle once the taxi Prius dies.

T1 Terry
by T1 Terry
Fri, 23 Aug 2019, 12:20
Forum: Charging Infrastructure
Topic: 3 phase outlet, what is suitable for EV charging?
Replies: 16
Views: 479

3 phase outlet, what is suitable for EV charging?

In my workshop I have multiple 5 pin 3 phase outlets marked as 10 amps on the cover. Groups of these a re protected by a 16amp circuit breaker. There is a 3 phase connection box with big cable running from it to a separate RCD marked C83. This circuit powered a monster hydraulic pump that drove a br...
by T1 Terry
Thu, 22 Aug 2019, 12:54
Forum: Batteries, charging, management and monitoring
Topic: Battery cooling academic paper
Replies: 6
Views: 261

Re: Battery cooling academic paper

Wind chill across pure water can remove a lot of heat because pure water can transfer 3 times the heat energy of air, so only small narrow tubes needed to move the heat away from the cells. Water looses a lot of it's cooling efficiency once it is mixed with anti freeze or corrosion inhibitors. Mixed...
by T1 Terry
Wed, 21 Aug 2019, 10:49
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 428
Views: 27928

Re: Prelude conversion project - some questions

Well the decision to make it a shorter range, lower voltage car was made. Sad, but I'll feel much better knowing that there's nothing rubbing of chaffing against something it shouldn't. It will make for a less powerful car too, with peak current around 200 A and 270 V nominal, it's a mere 55 kW mac...
by T1 Terry
Mon, 19 Aug 2019, 11:46
Forum: Hyundai
Topic: Ioniq Electric
Replies: 15
Views: 863

Re: Ioniq Electric

Hmmmm.... The Mannum/Adelaide airport/Mannum trip is roughly 200km, but some big hills if returning via the freeway, not quite so bad via the Chain of Ponds rd. The trip to SA branch AEVA meeting is close enough to the bottom of the big hill, so going the Chain of Ponds rd is sort of out of the ques...
by T1 Terry
Mon, 19 Aug 2019, 10:11
Forum: For Sale/Wanted
Topic: Bushbus and my gumtree stuff around. Bushbus needs cells
Replies: 16
Views: 464

Re: Bushbus and my gumtree stuff around. Bushbus needs cells

So, you are looking for a min of 200Ah @ 24v nom. of LiFe cells? 3.2 x 8 x 200 = 5120Wh. How many $$ do you have to spend? Freight might be the killer here, but I expect I could get a set up using good second cells up and running at a reasonable cost.

T1 Terry
by T1 Terry
Fri, 16 Aug 2019, 15:21
Forum: Hyundai
Topic: Ioniq Electric
Replies: 15
Views: 863

Re: Ioniq Electric

Have they said what the expected range would be on a full charge?

T1 Terry
by T1 Terry
Wed, 14 Aug 2019, 13:03
Forum: Batteries, charging, management and monitoring
Topic: Calb cell pack unhealthy
Replies: 1
Views: 141

Re: Calb cell pack unhealthy

How many cells and what Ah do you expect to have left over? Not over complicated to build a 24v battery pack and 24v 5kva inverter/chargers with a built in 80 amp MPPT controller are cheap enough and they can be linked together to build the capacity you require. Around 12mths back we built a 10kva s...
by T1 Terry
Wed, 14 Aug 2019, 12:56
Forum: Hyundai
Topic: Ioniq Electric
Replies: 15
Views: 863

Re: Ioniq Electric

What price and range with the new 2020 model? The Kona is just a little out of our price range so we will be sticking with our PHEV Prius for the moment, but I'd love to buy a brand new EV sometime soon.

T1 Terry
by T1 Terry
Wed, 14 Aug 2019, 10:03
Forum: Renewable Energy and Storage (Non-EV)
Topic: Nimh in parrallel
Replies: 5
Views: 239

Re: Nimh in parrallel

NiMh cells have a whole different characteristic when reaching fully charged, their voltage actually starts to drop and they start to accept more current and go into suicide mode. A whole lot of info about them on the Prius Chat forum and how to successfully recover a traction battery pack, but the ...