Search found 990 matches

by T1 Terry
Tue, 29 Oct 2019, 13:26
Forum: Renewable Energy and Storage (Non-EV)
Topic: Storing energy
Replies: 13
Views: 584

Storing energy

The way we normally view storing solar voltaic energy is in a battery because this is a bit like cash in the wallet, it can be used for a number of different purposes depending on just where it needs to be used. But energy can be stored for specific uses as well, and maybe cheaper than batteries. Wi...
by T1 Terry
Mon, 28 Oct 2019, 15:19
Forum: Renewable Energy and Storage (Non-EV)
Topic: Off-grid solar diagram / ideas
Replies: 17
Views: 2423

Re: Off-grid solar diagram / ideas

The solar array I had for my Prius was 290vdc open circuit, so no controller required because the 76 cell pack comes out at 3.8v per cell at the maximum open circuit voltage the solar array could provide, but of course there is no current at that voltage so it never got there. The 15 panels were at ...
by T1 Terry
Mon, 28 Oct 2019, 14:59
Forum: Nissan
Topic: Nissan Ariya
Replies: 12
Views: 655

Re: Nissan Ariya

The 85kWh battery would make an amazing off grid battery for when the vehicle was parked up ...... I'd love to be able to buy a Kona and work through making a plug and play set up to use that big battery pack in an off grid set up that supplemented a small permanent battery pack that kept the syste...
by T1 Terry
Mon, 28 Oct 2019, 14:53
Forum: Renewable Energy and Storage (Non-EV)
Topic: Off-grid solar diagram / ideas
Replies: 17
Views: 2423

Re: Off-grid solar diagram / ideas

I'll add a photo, that might make more sense
4 x SSR and 2 x diodes tunnel heatsink.jpg
4 x SSR and 2 x diodes tunnel heatsink.jpg (285.5 KiB) Viewed 485 times
There are 2 fans in series on this set up because it is a 24v system.

T1 Terry
by T1 Terry
Mon, 28 Oct 2019, 14:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: Off-grid solar diagram / ideas
Replies: 17
Views: 2423

Re: Off-grid solar diagram / ideas

reviving an old thread here, but what blocking diodes do you guys use? on my setup I have 4s5p 175W 36Vmp, 5.5Amp setup. I had a 10A10 blocking diode on each string as I was direct connecting to a 144v nominal battery 10A10 diodes are normal silicon units, so 0.7v or 0.8v drop. At 5A, they're getti...
by T1 Terry
Sat, 26 Oct 2019, 10:58
Forum: Nissan
Topic: Nissan Ariya
Replies: 12
Views: 655

Re: Nissan Ariya

The 85kWh battery would make an amazing off grid battery for when the vehicle was parked up ...... I'd love to be able to buy a Kona and work through making a plug and play set up to use that big battery pack in an off grid set up that supplemented a small permanent battery pack that kept the system...
by T1 Terry
Fri, 25 Oct 2019, 09:18
Forum: Nissan
Topic: Nissan Ariya
Replies: 12
Views: 655

Re: Nissan Ariya

85kWh battery, where will this end, a battery with more range than the person driving the vehicle or the comfort limit of the passengers?

T1 Terry
by T1 Terry
Fri, 25 Oct 2019, 09:15
Forum: Mazda
Topic: Mazda MX-30 electric
Replies: 4
Views: 771

Re: Mazda MX-30 electric

The Mazda RX sports line with an electric turbo and hybrid drive to give it that outstanding launch off the mark the Tesla has, but not the weight, regenerative braking and long range per fuel and battery refill, could be the ultimate Bathurst 12 hr and 24 hr race machine. The electric turbo doesn't...
by T1 Terry
Wed, 23 Oct 2019, 14:11
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

Hmmm...... could be a rather expensive "suck it and see" type of thing. If the inverter was not actually in the vehicle but rather plugged into an Anderson plug connected to the battery with a switching relay that isolated either the Anderson plug via a pr of contactors or the Ev's contactors if the...
by T1 Terry
Wed, 23 Oct 2019, 12:53
Forum: Electric motors and controllers
Topic: AC electric motor rewinding for EV use
Replies: 100
Views: 22991

Re: AC electric motor rewinding for EV use

At least this thread brought up the link to the Prius rewind thread that I didn't realise even existed, so not all was a loss :lol:

T1 Terry
by T1 Terry
Wed, 23 Oct 2019, 11:14
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

So, if the inverter remained isolated and remained a floating system, line 1 and line 2 rather than neutral and positive, then the AC would not be seen on the vehicle negative side so it wouldn't trip the leakage to the chassis problem. If an RVD rather than an RCD was used on the 240vac output the ...
by T1 Terry
Tue, 22 Oct 2019, 11:36
Forum: Renewable Energy and Storage (Non-EV)
Topic: AGM for home storage?
Replies: 6
Views: 491

Re: AGM for home storage?

I received an "invitation" to attend a Powerwall 2 sales pitch event and was interested to see the comparison between $/Wh between the Powerwall 2 and inverter v our lithium system using Winston cells and inverters. the set up came out to 72.4c per Wh for the Powerwall 2 and 26.5c per Wh for our set...
by T1 Terry
Tue, 22 Oct 2019, 11:21
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

More thinking on this topic. Why would AC be seen on the DC side? It must pass through a DC to DC converter before it is fed into the inverter itself to make the AC wave form, so wouldn't that block any AC waveform. I can understand DC ripple being seen on the DC side, but if the wave form doesn't c...
by T1 Terry
Tue, 22 Oct 2019, 11:13
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 653

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?
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T1 Terry
by T1 Terry
Mon, 21 Oct 2019, 14:49
Forum: Holden/Chev Volt
Topic: Just bought a second-hand Volt
Replies: 5
Views: 1778

Re: Just bought a second-hand Volt

Good one to know, I wonder if that is why the previous owner sold it? Not something you'd think about being a cause for such a problem

T1 Terry
by T1 Terry
Mon, 21 Oct 2019, 14:44
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 653

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

Thanks Matt, makes sense that the solar would gradually charge the caps till the desired voltage was reached and then the system would turn on. if this isn't part of the inverter design then it would need to be added for using an EV battery to power the inverter. I know with the 48v MS model inverte...
by T1 Terry
Mon, 21 Oct 2019, 12:57
Forum: General EV Discussion
Topic: 4kVA Inverter for 230VAC off a 350VDC battery?
Replies: 11
Views: 653

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

If the PIP5048MG inverter was used with the battery connected to the solar input, would the capacitors still need to be precharged? Or would the inverter already have this as part of the design?

T1 Terry
by T1 Terry
Sat, 19 Oct 2019, 10:44
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

I don't want to shunt it to earth, just block it from being present on the solar/battery lines. Just DC to one side of the diode and mixed AC and DC inside the inverter covers where it would involve removing an access panel to be exposed to the AC element on the DC lines.

T1 Terry
by T1 Terry
Fri, 18 Oct 2019, 12:46
Forum: EV Motoring
Topic: The Aptera is back
Replies: 26
Views: 1026

Re: The Aptera is back

If you put enough paint and spin on a dead horse it will finally get up and run for a while. Look at the flow batteries from there first proper entry into the market back in 1980 - 86 by Maria Skyllas-Kazacos at the University of NSW. It had a rebirth in the late 90's and again around 2009 and the l...
by T1 Terry
Fri, 18 Oct 2019, 12:30
Forum: Renewable Energy and Storage (Non-EV)
Topic: Sumry Inverter-Charger in Caravan
Replies: 7
Views: 439

Re: Sumry Inverter-Charger in Caravan

Thanks Dave, so around the 3700w mark to run both air con units flat out, not bad at all. We installed a 12v 700Ah lithium battery a number of yrs back and the owner decided last summer that he should have an air con installed because he now had batteries that could handle the load. He installed a V...
by T1 Terry
Fri, 18 Oct 2019, 10:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Sumry Inverter-Charger in Caravan
Replies: 7
Views: 439

Re: Sumry Inverter-Charger in Caravan

For those with a Sumry or contemplating same: I now have my 5kVA unit running two LG split air conditioners. Each is 6,000W and the SUMRY handles both with ease, even on maximum cooling or maximum heating both running together. The Sumry is driven by 8x AVASS bus cells. Cheers, Dave I am assuming t...
by T1 Terry
Fri, 18 Oct 2019, 10:52
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

Checked out the price for the 600vdc 60 amp Morningstar MPPT controller .... ouch, around the $2,000 mark, would something like this block the AC on the solar/battery lines https://au.rs-online.com/web/p/rectifie ... s/8776418/

T1 Terry
by T1 Terry
Fri, 18 Oct 2019, 09:03
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

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 T1 Terry
Thu, 17 Oct 2019, 12:57
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

Ah, interesting, I haven't even bought the MG inverters yet but 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?

T1 Terry
by T1 Terry
Thu, 17 Oct 2019, 11:12
Forum: General EV Discussion
Topic: Making home EV ready
Replies: 41
Views: 1941

Re: Making home EV ready

This set up isn't intended to feed back into the mains or even be mains connected, it is for an off grid stand alone system or SPS as the Clean Energy Council calls it. The output side of the inverter (240vac) must be isolated from the DC solar input, surely, otherwise there would be both 450vdc and...