Re: [EVDL] prius as generator (two-phase 240 VAC)

2020-08-01 Thread Peter VanDerWal via EV
A simple autotransformer can convert 240V single phase into split phase. Technically the transformer only has to be rated for the maximum difference in power between the two legs, however even 5kVA autotransformers are relatively cheap and only weigh about 30 pounds. Note: an autotransformer

Re: [EVDL] prius as generator (two-phase 240 VAC)

2020-08-01 Thread Lee Hart via EV
Robert Bruninga via EV wrote: I was talking about 240V split phase which is the standard in the USA. ANd split phase is the same as two-phase (180 degrees apart). No; split phase is not the same as 2-phase. Split phase is just single-phase 240v with a center-tap. You get 120v each side of

Re: [EVDL] prius as generator (two-phase 240 VAC)

2020-07-31 Thread Robert Bruninga via EV
I was talking about 240V split phase which is the standard in the USA. ANd split phase is the same as two-phase (180 degrees apart). The inverter in question did not say it could do 230v (or 240 v) split phase or two phase and so wont work with standard house wiring unless a big heavy split

Re: [EVDL] prius as generator (Lower angle for dual orthogonal arrays)

2020-07-31 Thread Robert Bruninga via EV
That is too steep. I'm pretty sure that I did a detail study on PV watts and concluded that panels should be at lower angles the further from south that they are. If you put solar panels to the SE and another set in parallel to the Southwest (especially if there are trees in the middle that

Re: [EVDL] prius as generator

2020-07-31 Thread Luke Scharf via EV
This is a really interesting discussion, and has provided a lot of additional considerations for my paper-design work -- which makes the puzzle all the more interesting. Thank you! -Luke On Thu, Jul 30, 2020 at 8:41 PM Haudy Kazemi via EV wrote: > Willie, thanks for the details. I suggest

Re: [EVDL] prius as generator

2020-07-30 Thread Haudy Kazemi via EV
Willie, thanks for the details. I suggest trying again but this time, in addition to the true east/west orientation, also put them 90 degrees apart from each other at their peaks. In other words, each should be at 45 degree angles to the ground. This will limit total illumination as the sun cannot

Re: [EVDL] prius as generator

2020-07-30 Thread Willie via EV
On 7/30/20 2:45 PM, Haudy Kazemi via EV wrote: On Thu, Jul 30, 2020, 12:51 Willie via EV wrote: On 7/30/20 9:29 AM, John Lussmyer via EV wrote: On Thu Jul 30 09:49:15 PDT 2020 ev@lists.evdl.org said: On 7/30/20 7:03 AM, Robert Bruninga wrote: Yes, that looks promising.. How much is

Re: [EVDL] prius as generator

2020-07-30 Thread paul dove via EV
Back the when GE and Westinghouse were battling AC didn’t mean three-phase AC. Two-phase, where the phases were 90 degrees apart, was an easier system to analyze and generate. The Westinghouse generators at Niagara Falls, for example, produced two-phase. I doubt you will find many Two Phase

Re: [EVDL] prius as generator

2020-07-30 Thread Haudy Kazemi via EV
On Thu, Jul 30, 2020, 12:51 Willie via EV wrote: > > > On 7/30/20 9:29 AM, John Lussmyer via EV wrote: > > On Thu Jul 30 09:49:15 PDT 2020 ev@lists.evdl.org said: > >> On 7/30/20 7:03 AM, Robert Bruninga wrote: > >>> Yes, that looks promising.. How much is the 3 or 5kw model? > >> > >> >

Re: [EVDL] prius as generator

2020-07-30 Thread Lee Hart via EV
EVDL Administrator via EV wrote: On 30 Jul 2020 at 10:58, Robert Bruninga via EV wrote: no mention of 240 VAC two phase? I'm not an EE, but I don't think that such a thing exists anywhere, at least not as commercial power. The US does have 240v split phase, but that's single phase. I

Re: [EVDL] prius as generator

2020-07-30 Thread Willie via EV
On 7/30/20 9:29 AM, John Lussmyer via EV wrote: On Thu Jul 30 09:49:15 PDT 2020 ev@lists.evdl.org said: On 7/30/20 7:03 AM, Robert Bruninga wrote: Yes, that looks promising..  How much is the 3 or 5kw model?

Re: [EVDL] prius as generator

2020-07-30 Thread EVDL Administrator via EV
On 30 Jul 2020 at 10:58, Robert Bruninga via EV wrote: > no mention of 240 VAC two phase? I'm not an EE, but I don't think that such a thing exists anywhere, at least not as commercial power. The US does have 240v split phase, but that's single phase. David Roden, EVDL moderator & general

Re: [EVDL] prius as generator

2020-07-30 Thread John Lussmyer via EV
On Thu Jul 30 09:49:15 PDT 2020 ev@lists.evdl.org said: >On 7/30/20 7:03 AM, Robert Bruninga wrote: >> Yes, that looks promising..  How much is the 3 or 5kw model? > >https://www.ecodirect.com/Phocos-3kW-24V-Any-Grid-Hybrid-Off-Grid-Inverer-p/phocos-psw-h-3kw-230-24v.htm >

Re: [EVDL] prius as generator

2020-07-30 Thread Willie via EV
On 7/30/20 7:03 AM, Robert Bruninga wrote: Yes, that looks promising..  How much is the 3 or 5kw model? Bob On Wed, Jul 29, 2020 at 12:44 PM Willie via EV > wrote: On 7/29/20 7:58 AM, Robert Bruninga via EV wrote: > If you can find an off-grid inverter

Re: [EVDL] prius as generator

2020-07-30 Thread Robert Bruninga via EV
Yes, that looks promising.. How much is the 3 or 5kw model? Bob On Wed, Jul 29, 2020 at 12:44 PM Willie via EV wrote: > > > On 7/29/20 7:58 AM, Robert Bruninga via EV wrote: > > If you can find an off-grid inverter with 300 VDC input then I sure want > to > > know about it! Really.d.. that is

Re: [EVDL] prius as generator

2020-07-30 Thread Robert Bruninga via EV
Yes, how much are they? Single or 3 phase but no mention of 240 VAC two phase? And is that 9 amps at 115 or 230? I guess it is a 2kw nominal inverter? Bob On Wed, Jul 29, 2020 at 2:34 PM Lee Hart wrote: > Robert Bruninga via EV wrote: > > If you can find an off-grid inverter with 300 VDC

Re: [EVDL] prius as generator

2020-07-30 Thread Robert Bruninga via EV
True, south always better. But the point is that then you need an inverter with twice the capacity.. The topic being discussed is being able to share an inverter with additional panels facing a different direction. Key points: 1) when not facing due south, panels should be less tilted since the

Re: [EVDL] prius as generator

2020-07-30 Thread Peter VanDerWal via EV
FWIW I did some simulations using PVWatts 2 a while back to see if it made sense to have a panel facing east and another facing west, like you describe(tilted to match latitude). I was hoping this would result in a flatter power output through the day. Turned out that in almost all cases it

Re: [EVDL] prius as generator

2020-07-30 Thread Robert Bruninga via EV
AMEN! We need to be careful about using the term MPPT. MPPT in a solar grid-tie inverter will MAXIMIZE power from the source (solar panels) and dump it all in the infinite grid. Putting a battery in place of solar panels will do the same thing. It will MAXIMALLY load the battery and shove

Re: [EVDL] prius as generator

2020-07-29 Thread Willie via EV
On 7/29/20 5:04 PM, Haudy Kazemi via EV wrote: On Wed, Jul 29, 2020, 18:36 Willie via EV wrote: Perhaps you can comment on some trouble I've run into. After observing that some microinverters worked on battery input and that string inverters worked well with combined strings of both

Re: [EVDL] prius as generator

2020-07-29 Thread Haudy Kazemi via EV
On Wed, Jul 29, 2020, 18:36 Willie via EV wrote: > > > Perhaps you can comment on some trouble I've run into. > > After observing that some microinverters worked on battery input and > that string inverters worked well with combined strings of both east and > west facing panels, I became

Re: [EVDL] prius as generator

2020-07-29 Thread Jim Walls via EV
On 07/29/2020 16:35, Willie via EV wrote: Perhaps you can comment on some trouble I've run into. After observing that some microinverters worked on battery input and that string inverters worked well with combined strings of both east and west facing panels, I became convinced that a single

Re: [EVDL] prius as generator

2020-07-29 Thread Willie via EV
On 7/29/20 11:49 AM, Lee Hart via EV wrote: I think it depends on how they work. I have two MPPT trackers that still work if they're fed with batteries; and one that doesn't. With a battery input, the big one that works maximizes its output, as if it's in full sun. Its input is

Re: [EVDL] prius as generator

2020-07-29 Thread Willie McKemie via EV
I successfully run microinverters on 36v batteries. On Wed, Jul 29, 2020, 14:30 John Lussmyer via EV wrote: > On Wed Jul 29 09:44:30 PDT 2020 ev@lists.evdl.org said: > >This might be worth a look: > > >

Re: [EVDL] prius as generator

2020-07-29 Thread Haudy Kazemi via EV
On Wed, Jul 29, 2020, 14:46 Lee Hart via EV wrote: > John Lussmyer via EV wrote: > >> I have a 5kw on order for testing. Maximum VDC of 450 will, I think, > >> require some adjustment in the way I've been doing things. > > > Except that the 450VDC Max is only for the PV Input which has a MPPT >

Re: [EVDL] prius as generator

2020-07-29 Thread Lee Hart via EV
John Lussmyer via EV wrote: I have a 5kw on order for testing. Maximum VDC of 450 will, I think, require some adjustment in the way I've been doing things. Except that the 450VDC Max is only for the PV Input which has a MPPT controller. I've read several places that a MPPT setup does not

Re: [EVDL] prius as generator

2020-07-29 Thread John Lussmyer via EV
On Wed Jul 29 09:44:30 PDT 2020 ev@lists.evdl.org said: >This might be worth a look: >https://www.phocos.com/wp-content/uploads/2019/10/PSW-H-Series_english-datasheet_2020-07-17.pdf > >I have a 5kw on order for testing. Maximum VDC of 450 will, I think, >require some adjustment in the way I've

Re: [EVDL] prius as generator

2020-07-29 Thread Lee Hart via EV
Robert Bruninga via EV wrote: If you can find an off-grid inverter with 300 VDC input then I sure want to know about it! Really... that is the holy grail... Bob, I have an Aerovironment SPC-2000 off-grid inverter. The solar input is 150-600 VDC, 8 amps max, and the output is 115/208/230vac

Re: [EVDL] prius as generator

2020-07-29 Thread Peter VanDerWal via EV
You can trick some grid-tied inverters into working in "island" mode by providing an AC signal from a smaller 'off-grid' inverter. The trick, however, is controlling the power output. Most grid tied inverters want to work in an all-or-nothing mode, if they were tied to a DC source that

Re: [EVDL] prius as generator

2020-07-29 Thread Willie via EV
On 7/29/20 7:58 AM, Robert Bruninga via EV wrote: If you can find an off-grid inverter with 300 VDC input then I sure want to know about it! Really.d.. that is the holy grail... All off-grid inverets I see are designed for 48 volts for compatibility with batteries. You only see 300-500 VDC

Re: [EVDL] prius as generator

2020-07-29 Thread Robert Bruninga via EV
If you can find an off-grid inverter with 300 VDC input then I sure want to know about it! Really... that is the holy grail... All off-grid inverets I see are designed for 48 volts for compatibility with batteries. You only see 300-500 VDC input on Grid inverters since there are no batteries.

Re: [EVDL] prius as generator

2020-07-28 Thread Luke Scharf via EV
Thanks! I've managed to find https://plugoutpower.com/ and read through their site. I'll contact them if I have something they might find interesting. I just purchased a GM 2-mode hybrid pickup truck, and have been doing pen-and-paper design exercises to see if adding an electric power takeoff

Re: [EVDL] prius as generator

2020-07-26 Thread Peter VanDerWal via EV
Seems to me if you have an EV with a DC fast charge connection, even a CCS, if you can trick the contactors into closing, you'd have easy access to the HV power. I wonder if you could hook into the OBD-II connector and send the canbus commands to turn on the contactors.

Re: [EVDL] prius as generator

2020-07-26 Thread Peter VanDerWal via EV
> > But the weight of a 3 to 5 kW autotransfomer has got to be hundreds of > lbs. And price goes up to the thousands. LOL, not even close. Autotransformers are frequently used for off-grid systems, a 5kVA unit weighs about 30 lbs and costs $300-$500 new.

Re: [EVDL] prius as generator

2020-07-26 Thread Robert Bruninga via EV
There is a company (called Plugout I think) working on a 3kw and 5kw version but best I can tell, they are taking the simple way out. They are just taking a normal inverter (designed for HVDC input for Europe (220 VAC) and then selling you an autotransformer to convert to split phase 240 VAC.

Re: [EVDL] prius as generator

2020-07-25 Thread Luke Scharf via EV
Has anyone done anything like Richard Factor's PriUPS, except with the GM 2-Mode hybrid? Thanks, -Luke On Sat, Jul 25, 2020 at 3:25 PM Lee Hart via EV wrote: > redscooter via EV wrote: > > I want to do a prius 12vdc battery to 120 vac invertor. which of the > prius > > can do this meaning,

Re: [EVDL] prius as generator

2020-07-25 Thread Lee Hart via EV
redscooter via EV wrote: I want to do a prius 12vdc battery to 120 vac invertor. which of the prius can do this meaning, turn the car on, turn off all the extra loads, turn on invertor. Which years or gen /s will stay on and keep charging the 12 vdc battery?? some talked about using the manal

[EVDL] prius as generator

2020-07-25 Thread redscooter via EV
I want to do a prius 12vdc battery to 120 vac invertor. which of the prius can do this meaning, turn the car on, turn off all the extra loads, turn on invertor. Which years or gen /s will stay on and keep charging the 12 vdc battery?? some talked about using the manal key to lock the doors.