360V DC input split phase 120V/240V AC inverter

[summit]

He plan to develop proper module to use directly the NACS gun to power his inverter.
So, use the 400V DC pins of the outlet.

some serious CAN bus hacking, makes sense that the NACS is bi-direcitonal. Hopefully he'll share his progress

 

[chalupien]

I have a great solution from a reputable US

15kw split-phase inverter from 250-435VDC

https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-350invch150-120-240-xg-series.pdf

 

[Tomato88]

I have a great solution from a reputable US

15kw split-phase inverter from 250-435VDC

https://www.belfuse.com/resources/datasheets/powersolutions/ds-bps-350invch150-120-240-xg-series.pdf

It seems that one is going away, but there is another model listed that isn't:

BCV200-350-8 – Combo Unit

The Bel Power Solutions BCV200-350-8 is a 20 kW Combo Unit consisting of three subsystems: 15 kW Bidirectional Inverter-Charger 4 kW 12 V Down Converter 1 kW 24 V Down Converter.

www.belfuse.com

 

[Capt Bill]

Hey everyone, sorry to barge into a thread... but I am a Bolt owner and have been toying with using it as battery backup system. I have a 12VDC -> 120VAC inverter setup on it with an Anderson connector, but lately I've had some utility reliability issues making me want to do more. Specifically I'd love to be able to do split phase to power large portions of my smallish (by American standard at 900 sq ft) house, and I'd been doing testing on using the HVDC cabin heater branch before I bumped into this thread. The market for all-in-one HVDC -> split phase inverters is not the greatest right now it seems.

I want to be clear I am not affiliated with anyone, but I've been looking at this unit:

EG4 6000XP Off-Grid Inverter | 8000W PV Input | 6000W Output | 480V VOC Input | 48V 120/240V Split Phase | All-In-One Solar Inverter

EG4 6000XP Off-Grid Inverter: 6000W output, 8000W PV input, 480V VOC, and 48V split-phase 120/240V. Efficient power for off-grid setups. Available now at Signature Solar.

signaturesolar.com

I looked at its manual in detail, and it appears to have an option to disable the MPPT function totally, which if I'm reading that right, is kinda interesting:

View attachment 175519

Maybe I'm over thinking it, but I've been warned by multiple people now I should think twice before connecting my EV's battery to an MPPT solar input on an inverter, yet I see tons and tons of people doing it with success on projects like this, primarily using Nissan Leaf battery assembles.

Home

This revolutionary software enables EV battery packs to be easily reused for stationary storage in combination with solar inverters - dalathegreat/Battery-Emulator

github.com

I got a link to this thread asking same question beginning thread poster asked. How can an EV Battery power a Home 240vac split phase home with a Solar w Battery System (where typical battery is 48 volt, though some less common home inverters connect to HV around 350 DC volt). I heard people are using MPPT inputs connecting to EV battery which I imagine could charge a depleting 48 v Battery Bank and keep it full; while wondering how such high amperage available on EV side does not blow up an MPPT. WOW to tons and tons of people doing this. Are there any web or thread links to refer me to. I am really Curious about maybe trying this idea out after I get enough references to risk the MPPT. ... I wonder which specific MPPTs are successful in converting EV voltages to either 240vac split phase, or to the 48 volt Battery Bank of a Home Solar w Battery system already in place. ... CURIOUS here with Imaginations like you, that remembers "When There Is A Will, There Is A Way.".

 

[yabert]

while wondering how such high amperage available on EV side does not blow up an MPPT

MPPT can limit themselves the current.
It's how I've connect a Victron 100/20 (20A) to panels able to give up to 60A. 300% overpaneling, but it don't care and simply give 20A to battery.
The same way, my Bolt EV battery can supply over 500A, but the MPPT of my Lux power (6000XP) don't care.

 

[Capt Bill]

MPPT can limit themselves the current.
It's how I've connect a Victron 100/20 (20A) to panels able to give up to 60A. 300% overpaneling, but it don't care and simply give 20A to battery.
The same way, my Bolt EV battery can supply over 500A, but the MPPT of my Lux power (6000XP) don't care.

I would be temped to experiment with this, and likely will when I get my EV (still a future event) ... While I know I would have to study up on EV out to MPPT input option, and make sure I know how to turn off the high voltage EV power that could easily kill me if I made a mistake, before really pursing this idea. I really love this idea for what it can likely do at a fraction of the cost of options will likely be hitting the market place soon.

 

[summit]

bench tested one of these with a Bolt, only pulled ~400w so far, hoping to test pulling 3kw soon. It's not as controllable as using the MPPT on a hybrid inverter.



below are some new V2L and some are being used already. I think CCS version is being developed. Pretty clever to fool the EVs into "charge" mode to connect the DC pin to battery.

EV PRODUCTS

Pioneering Power Electronics Since 2010. At Elejoy, we specialize in delivering cutting-edge power electronic solutions for outdoor and solar applications. Since our founding in 2010, we have become an industry leader dedicated to quality and customer satisfaction.

elejoy.com

V2L Discharge Device for Tesla Model 3/Y/S/X （North America Version）

V2L technology allows electric vehicles to directly output stored energy to external devices, such as household appliances and camping equipment. This technolo

teslaunch.net

 

[Capt Bill]

bench tested one of these with a Bolt, only pulled ~400w so far, hoping to test pulling 3kw soon. It's not as controllable as using the MPPT on a hybrid inverter.

View attachment 281229

below are some new V2L and some are being used already. I think CCS version is being developed. Pretty clever to fool the EVs into "charge" mode to connect the DC pin to battery.

EV PRODUCTS

Pioneering Power Electronics Since 2010. At Elejoy, we specialize in delivering cutting-edge power electronic solutions for outdoor and solar applications. Since our founding in 2010, we have become an industry leader dedicated to quality and customer satisfaction.

elejoy.com

V2L Discharge Device for Tesla Model 3/Y/S/X （North America Version）

V2L technology allows electric vehicles to directly output stored energy to external devices, such as household appliances and camping equipment. This technolo

teslaunch.net

400 watts is petty low, so good luck on experiments. Curious about How Many Watts to a 48 vdc battery bank (or to what specific you aimed at/ could be ac side) ... Did you get with the MPPT routing ??? More specific info would be very interesting to me .

 

[yabert]

Pretty clever to fool the EVs into "charge" mode to connect the DC pin to battery.

This is key. I can't believe we had to wait until now to have this kind of devices.

I think CCS version is being developed.

Ummm, NACS to CCS adapter are everywhere now, so this should not be a problem of connector.
But it's maybe/probably a problem for non Tesla EV.
I hope someone will try soon and post youtube video

 

[summit]

This is key. I can't believe we had to wait until now to have this kind of devices.

Ummm, NACS to CCS adapter are everywhere now, so this should not be a problem of connector.
But it's may be/probably a problem for non Tesla EV.
I hope someone will try soon and post youtube video

we're all wondering if/when Tesla does a software update and takes away this "feature". Some one did try the NACS adaptor but the Bolt shutdown after 50-sec. I'm in a wait-n-see mode to see how reliable these hot-dogging gizmo work out.

 

[summit]

400 watts is petty low, so good luck on experiments. Curious about How Many Watts to a 48 vdc battery bank (or to what specific you aimed at/ could be ac side) ... Did you get with the MPPT routing ??? More specific info would be very interesting to me .

I do have a MPPT set up like yabert's, from a Bolt to an MPP-U5648GK, mainly for outage to keep the mini-splits/water-heater running. This winter has been mild and yet to have a very long outage, knock-on-wood, so haven't a chance to run for very long yet, may be 2-hrs longest duration so far. Also bench tested fine with a PowMr POW-HVM5.5K-48

 

[Hedges]

How's the inrush current when you connect EV HV battery to MPPT inputs expecting more CC-like output of PV array?

I'm also interested in putting transformer-isolated and rectified AC (from line or generator) into MPPT inputs, for glitch-less pickup of Island inverter load (no sync and transfer.) Similar concept to ChargeVerter, but AC coupled. Also concerned with capacitor-charge inrush for this case.

 

[yabert]

Some one did try the NACS adaptor but the Bolt shutdown after 50-sec. I'm in a wait-n-see mode to see how reliable these hot-dogging gizmo work out.

Yeah, it's not every OEM who are slack on coding like Tesla.

I'm amazed by the low price of the 320-450Vdc inverter you found.
I can't believe nobody already put this unit and a CCS controller in a small box to sell it high price... Oh! wait https://elejoy.com/collections/ev-products

 

[summit]

Yeah, it's not every OEM who are slack on coding like Tesla.

I'm amazed by the low price of the 320-450Vdc inverter you found.
I can't believe nobody already put this unit and a CCS controller in a small box to sell it high price... Oh! wait https://elejoy.com/collections/ev-products

elejoy can't do CCS yet. But I'm putting that cheapy Aliexpress DC-AC into a box then to test out with the Bolt's HVDC at higher wattage. I got scared bench testing earlier, hence drew only 400w.

It took a while to proceed because Alix sent the wrong item, 220vac 50Hz output, I ordered 220vac 60Hz. They refused to replace, but finally made a video showing how to modify their board.

There is indeed quite a surge at first connect, scared the heck out of me when the 16A circuit breaker snapped, as I was already on hyper alert (with the HVDC). A pre-charge resistor did the trick, was considering using a NTC in-rush.

 

[summit]

How's the inrush current when you connect EV HV battery to MPPT inputs expecting more CC-like output of PV array?

doesn't seem to be an issue, at least with the PowMr and MPP AIO. I do have a circuit breaker and an inline fuse just in case. Didn't notice any kind of arcing ... so far.

The AIOs have max current charge setting, but I get your concern about the MPTT's current/voltage hunting; having blown cheapy MPTT with direct battery connection with current limiting.

 

[yabert]

doesn't seem to be an issue, at least with the PowMr and MPP AIO. I do have a circuit breaker and an inline fuse just in case. Didn't notice any kind of arcing ... so far.

I've also remark this.
At first I used the EV precharging to don't give 360V strait to the MPPT of my AIO, but I remarked the MPPT do a kind of ramp up anyhow.