Search found 988 matches

by T1 Terry
Fri, 06 Sep 2019, 09:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 157
Views: 10985

Re: PIP-5048MK inverter

ok, that was my own fault, i had put on more pv panels and now i exceeded the specs on the mk (150VoC) and above 115 MPPT, then i saw a lot of dips, now i am back to 3x40VoC and apprx 92-ish MPPT, now everything is back to normal, Now i have two panels nor beeing used, any one can recommend how i g...
by T1 Terry
Thu, 05 Sep 2019, 12:26
Forum: Scooters, mopeds and electric toys
Topic: Upgrading 24V mobility scooter from PB to LiFePO4 batts
Replies: 16
Views: 802

Re: Upgrading 24V mobility scooter from PB to LiFePO4 batts

I did one quite a few yrs back, it was one of those fold up units you could take on a plane. All was good until the controller dropped its bundle. The repairer claimed it was because the lithium battery could limit its current ...... a way of getting around that the controller couldn't handle the co...
by T1 Terry
Mon, 02 Sep 2019, 14:10
Forum: Charging Infrastructure
Topic: Solar day parking with AC charging
Replies: 13
Views: 630

Re: Solar day parking with AC charging

A combined sales thing aimed at those who want to save the planet? Pay for a parking spot that has a solar feed charging facility in a section that is for plug in EV's only. You know that if you drive to that level and that section there will be a parking spot available because those in the ICE vehi...
by T1 Terry
Mon, 02 Sep 2019, 09:41
Forum: Technical and conversion discussion
Topic: Prelude conversion project - some questions
Replies: 508
Views: 36017

Re: Prelude conversion project - some questions

The red/green flash means the battery is not connected. My Prius plug-in does it frequently so I've learned to actually check that every time I plug in the 240vac from the motorhome. Because the motorhome PIP inverter has an eco mode that shuts off the 240vac side until it sees a load, simply pluggi...
by T1 Terry
Mon, 02 Sep 2019, 09:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 39
Views: 3176

Re: Tesla PW2

So a house battery the same voltage as the EV battery? Voltage regulation and cell high/low voltage protection would still be required for both batteries along with a method of switching off the charging to each battery bank as well as the discharging to each battery bank. So 2 BMS units dedicated t...
by T1 Terry
Sun, 01 Sep 2019, 10:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Tesla PW2
Replies: 39
Views: 3176

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: 799

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: 39
Views: 3176

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: 799

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: 799

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: 799

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: 39
Views: 3176

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: 39
Views: 3176

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: 39
Views: 3176

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: 799

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: 799

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: 767

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: 767

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: 1340

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: 767

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: 1949

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: 767

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: 485

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: 508
Views: 36017

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: 1169

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...