Search found 3778 matches

by coulomb
Tue, 22 Oct 2019, 18:36
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 626

Re: 4kVA Inverter for 230VAC off a 350VDC battery?

More thoughts on this inverter. If the 48vdc battery was also used, wouldn't that keep the caps charged because it would be powering the inverter when the EV wasn't plugged in? . Yes, that's right, though then you really have to pre-charge the 48 V capacitors to avoid the need for the nerve calming...
by coulomb
Mon, 21 Oct 2019, 17:51
Forum: For Sale/Wanted
Topic: 9 Nissan Leafs for auction at Pickles: 8 NSW, 1 ACT
Replies: 20
Views: 1094

Re: 9 Nissan Leafs for auction at Pickles: 8 NSW, 1 ACT

I think the $10K Nissan replacement batteries are the more recent 'Lizard' chemistry, which supposedly lasts better in the heat than the original battery. We all wish this was true, and it would make so much sense. But Les Smith ( lesmando ), who received one of the first (probably the actual first...
by coulomb
Mon, 21 Oct 2019, 17:29
Forum: Charging Infrastructure
Topic: AC Type 2 chargers - Understanding different combinations
Replies: 11
Views: 459

Re: AC Type 2 chargers - Understanding different combinations

Edit: oops, already covered. Most of the current generation cars have 3-phase chargers, capable of at least 11kw Just checking the EV fact sheets, the Kona and Leaf 2.0 both have single phase chargers (7 kW). The model 3 is 11 kW on 3-phase, but somehow 7.4 kW (at least the UK models) on single phas...
by coulomb
Mon, 21 Oct 2019, 17:06
Forum: Admin Notices
Topic: Known to the last minute
Replies: 5
Views: 444

Re: Known to the last minute

antiscab wrote:
Mon, 21 Oct 2019, 14:19
mine is even more suspect.....I wonder if it's EST?
It's in whatever time zone you have selected in settings.

The exact time for we old timers might have been lost in the translation from WebWiz forums.
by coulomb
Mon, 21 Oct 2019, 08:26
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 626

Re: 4kVA Inverter for 230VAC off a 350VDC battery?

What did you mean by "pre-charge"? The inverter will have large capacitors on the DC bus. These have to be charged up to within about 20 V of the battery before connecting directly to the battery. Otherwise, whatever contactor or switch you have between the battery and the inverter will have a very...
by coulomb
Mon, 21 Oct 2019, 07:59
Forum: Batteries, charging, management and monitoring
Topic: Testing a traction pack before using
Replies: 22
Views: 5003

Re: Testing a traction pack before using

OK great ... I might still have some halogens... Just be aware that connecting bulbs in series generally isn't a good idea, because they tend to drop slightly different voltages as they warm up, and one ends up getting much more voltage and power than the others and blows. It might be OK as long as...
by coulomb
Mon, 21 Oct 2019, 07:49
Forum: Batteries, charging, management and monitoring
Topic: My latest battery build
Replies: 7
Views: 1260

Re: My latest battery build

The charger I have doesn’t come with an enable line so I’m planning on using a relay that has 12V DC on one side and 240V AC on the other to turn off the charger if any cell goes too high. Can you see any issues with this? There are those, including myself, who don't like regularly interrupting the...
by coulomb
Sun, 20 Oct 2019, 22:40
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 626

Re: 4kVA Inverter for 230VAC off a 350VDC battery?

Has really noone ever put a (280-380V) 350VDC to 230VAC inverter into his car (connected more or less directly to the main battery)? I've not heard of it. You'd have to get access to the inverter's DC bus, arrange for pre-charge and suitable DC rated fuses, and somehow safely get access to the car'...
by coulomb
Sat, 19 Oct 2019, 17:50
Forum: Renault
Topic: Single phase charging
Replies: 10
Views: 715

Re: Single phase charging

doggy wrote:
Sat, 19 Oct 2019, 13:54
So OpenEVSE tracks the solar.
Does it do that standard, or did you have to write some of your own software?
by coulomb
Fri, 18 Oct 2019, 17:54
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1885

Re: Making home EV ready

T1 Terry wrote:
Fri, 18 Oct 2019, 10:52
would something like this block the AC on the solar/battery lines ...
No, that AC has to be there by the design, you can't safely shunt it to earth or anything.
by coulomb
Thu, 17 Oct 2019, 15:15
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1885

Re: Making home EV ready

T1 Terry wrote:
Thu, 17 Oct 2019, 12:57
I do have a couple of MS inverters with the lower solar open circuit voltage, will these have the same effect of AC on one leg of the solar to earth?
No. These connect to the battery directly, and the battery is isolated from the AC output.
by coulomb
Thu, 17 Oct 2019, 12:12
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1885

Re: Making home EV ready

The output side of the inverter (240vac) must be isolated from the DC solar input, surely, otherwise there would be both 450vdc and 240vac on the same conductors and the solar isolators are only designed for max 500vdc so I'm not sure if they have an AC rating at all. The AC component is only from ...
by coulomb
Thu, 17 Oct 2019, 10:10
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1885

Re: Making home EV ready

The cars own motor controller output swings from +400v to -400v, so the insulation would be designed to handle that kind of switching. But the motor is floating, whereas the mains has a low impedance connection to earth. I worry about the modern cells with their metal cases (if they have any) being...
by coulomb
Wed, 16 Oct 2019, 22:14
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1885

Re: Making home EV ready

... the particular inverter I'm looking at, PIP5048MG... I doubt the 48v battery sees a big ripple across it so why would the solar or vehicle battery feeding in through the solar? The isolating transformer is in the 48 V to/from 400 V DC-DC bidirectional converter. So the battery is isolated from ...
by coulomb
Wed, 16 Oct 2019, 21:48
Forum: Batteries, charging, management and monitoring
Topic: Testing a traction pack before using
Replies: 22
Views: 5003

Re: Testing a traction pack before using

be aware that switching dc is much harder on the contacts than switching ac. Yes! In fact, I would not use any AC switch at all. It's OK for the switch to be there, as long as it's on (or switches on). Never switching off! For that reason, a pop-up toaster or the like is a no goer. I'd also rule ou...
by coulomb
Wed, 16 Oct 2019, 21:43
Forum: Members Machines
Topic: Brendon_m Moke
Replies: 159
Views: 12725

Re: Brendon_m Moke

jonescg wrote:
Wed, 16 Oct 2019, 19:22
Spartan! Compared to ...
Yeah! Where's the rest of it? ;)
by coulomb
Wed, 16 Oct 2019, 08:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 121
Views: 10790

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

I start to think that there is some error in the program with commands that are longer than 8 chars... Well, that's actually testable. Unlike the MS models (with firmware up to version 73.00 at least), the PE command can take a variable number of parameters. So you could send the 9 character PExxxx...
by coulomb
Tue, 15 Oct 2019, 19:59
Forum: EV Motoring
Topic: The Aptera is back
Replies: 26
Views: 955

Re: The Aptera is back

Instead the big coal corp gets the money with no net benefit to the environment. Err, Queensland Rail gets the compensation money in this case, not exactly a "big coal corp" (though one could perhaps argue how different they really are). These so called environmental protestors are handing the bask...
by coulomb
Tue, 15 Oct 2019, 11:16
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 121
Views: 10790

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

I just noticed that setting 13 has the note: "when selecting SBU priority or Solar first in program 01". Are you in either of these output source priorities? Oops! I just realised that I was using an MS manual, and the GKs are different. I had it in my head that only MKs (Kings) are very different ...
by coulomb
Mon, 14 Oct 2019, 17:51
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 121
Views: 10790

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

If the PIP switches to line mode after a 110% load event, it stays there forever until I completely turn it off and on again I just noticed that setting 13 has the note: "when selecting SBU priority or Solar first in program 01". Are you in either of these output source priorities? [ Edit: oops. Th...
by coulomb
Mon, 14 Oct 2019, 08:08
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)
Replies: 121
Views: 10790

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

Hello together! Welcome to the forum. I own an PIP 5048GK We have a separate topic for the GE/GK/MG models . But since this is a protocol issue, and the protocols are more or less uniform across the models, I'm happy to let this post stay in [the PIP-4048MS and 5048MS] topic. [Edit: Weber: With Cou...
by coulomb
Sun, 13 Oct 2019, 20:57
Forum: Charging Infrastructure
Topic: Fast charging infrastructure - forward-looking overview
Replies: 9
Views: 373

Re: Fast charging infrastructure - forward-looking overview

I was going to suggest the topology is capable of 150kw+ too, but then I realised as a continuous rating as you would for charging, the powerstage would need to be significantly better cooled than for just driving duty Yeah. That's the thing with very fast charging. You want to be able to drive for...
by coulomb
Sun, 13 Oct 2019, 20:49
Forum: Charging Infrastructure
Topic: Fast charging infrastructure - forward-looking overview
Replies: 9
Views: 373

Re: Fast charging infrastructure - forward-looking overview

All the fast charge stations (at least the ones in WA) are AC fast charge too I see that they are listed in Plugshare as 50 kW. So that would be 70+ A per phase. Is that for real? Or just that it's an AC outlet in a box that can supply 50 kW DC so they call it 50 kW? I see 63 A type 2 cables for sa...
by coulomb
Sat, 12 Oct 2019, 08:55
Forum: For Sale/Wanted
Topic: 9 Nissan Leafs for auction at Pickles: 8 NSW, 1 ACT
Replies: 20
Views: 1094

Re: 9 Nissan Leafs for auction at Pickles: 8 NSW, 1 ACT

There were 7 Leafs at auction from NSW a month ago. They were traced back (by someone on the OzLeaf forum) to NSW and local government. These were low km, but heavy degradation for the distance driven (I don't recall how many capacity bars they had lost). It was concluded that they were likely charg...
by coulomb
Fri, 11 Oct 2019, 14:50
Forum: Mitsubishi
Topic: 2020 Outlander PHEV
Replies: 4
Views: 323

Re: 2020 Highlander PHEV

g4qber wrote:
Fri, 11 Oct 2019, 13:34
Do you mean Mitsubishi Outlander PHEV?
Sigh. Yes, I did. Edited.