Thanks man! Much appreciated

Thanks Jim! 🐦

More to come!

Glad you enjoyed it!

We're in the process of creating a drop in container based system for exactly those types of customer. All built off site so just needs connecting up once delivered. If it's something you are interested in.

Yeah, its great. I'm in Ireland and nearly every installer just wants to do bog standard roof jobs with no interest in this. I've fields like this and a three phase connection and was trying to get in a 40kw array wired to shed and then to house, but no takers.

@@imnothere220Trades want BOG standard jobs to maximise profit, minimise effort and complexity. No takers from up North?

@@commuterbranchline8132 you know I didn't actually try NI. Would be a bit concerned about follow up you know...very hard for a guy to return for fix up works on a 6 hour round trip

some companies are bringing out containers with everything wired up so they just drop it off at a commercial job then you wire it to your mains

Thanks for sharing

Ddswep

Glad you enjoyed it!

Would be ideal!

Thanks! 👍

Byghyj ugh 😫🎉🎉😢

Hope you enjoy both!

Regardless of the way the bulk of the pv modules get coupled it would be best if there is at least some dc based pv integrated in the system. So that the system can perform a cold start itself in case of a battery depletion

Daniel: it depends on when do you want to consume the power that is generated with solar, if you have immediate use (100% instant consumption) the Fronius is more efficient, but if your goal is to charge the 48V batteries during the day and consume the power outside of the solar power generation window then the DC coupled MPPTs are more efficient. Most installations are a mix of both so you can indeed go for a mix of AC-coupled Fronius and a couple of MPPT 450/200... The Victron setup allows you to be flexiable and expand if needed

Hope so!

Thanks!

😂😂😂

Legend!

The DC side of an inverter deals with power management. If you were to put it directly into a DC powered immersion heater it would most likely cause chaos. On larger installs such as this one you have a verity of different DC voltages. You would need to be able to combine these voltages, merge them then send them to a DC circuit. Using an AC system complies with what is currently available which means much lower cost and over all efficiency. If we all transitioned to DC potentially this could work but currently this wouldn’t be cost effective or efficient. Again 02:51, I could be talking absolute nonsense. Peace and love

We will be yes 🙌🏽

Yeah Celiac sucks!!! I know a lot of people who have it for real and it’s serious, but the joke is, some people think it’s ‘hipster’ or ‘healthier’ to be gluten free, so just avoid it even without the allergy to be trendy. P.S - Google the link between Monsanto and celiac!! 😅

They connect into the combiner box - Series parallel 😎

I can't remember the exact number off the top of my head but you only need a couple of volts above the battery charge voltage for the MPPT to work. Unfortunately the cable run to the house is 120m so a little far for heat recovery but that would have been amazing!

@@LemonEnergy Ah, I see.... my only experience is my domestic hybrid which needs 120V to kick off.... Intruiged about the batteries, have subscribed and await with interest!

I think theres a massive shortage of the largest units when it comes to victron mppt to this day. Its hard to get your hands on these units.

They'll already be in the panels. Usually the little junction box where the wires come out of the panels I believe.

That’s a cool thought, I’m definitely not clued up enough to be sure about that, but my only thought is, it could have an adverse effect and pull heat in, as a heat sinks size and fin shape / direction is such that it pushes heat away for convection

Same here in Finland, our whole distribution network is aluminium. I have a service of 3x35A and incoming cable is 4x25mm2 AXMK aluminium.

😂

You are right but the SMA will not turn on if the batteries are emtpy and the Victrons are turning off. The MPPTs will charge your battery even if the system is turned off! This system like this is also blackout capable. What a lot of people always also forget are the losses. If you use AC grid tied PV Inverters they will deliver AC which the Multiplus have to change to DC. Its more loss than you think going this path! The Victron system also has the 1:1 rule. You cannot have more AC tied Power on the AC output than your Multiplus can handle. If you have a 48/3000 Multiplus for example you have 3000VA of max possible so your AC tied Grid inverter then has to be below this value on each and every Multiplus you have. I also have a 3ph Victron system and use 3 SMA Grid tied inverters for AC connection and one 250/70 MPPT so I have both worlds too. Also the SMA would be only rudimentary controlled (via frequency shifting) in case batteries are full so the power would have to go into the grid (which is problem as this situation here is single phase grid only!!!) So you loose a lot of control when only using grid tied inverters. The only fully controllable AC PV Inverters are from Fronius and fully integrated into the Victron World. They can step up or down really precise. The SMAs will do jumps of step downs or bigger jumps up as their are not that fine controllable like a Fronius with communication. MPPTs from victron can be controlled by the BMS or by the settings you have programmed into the Multiplus system for charging the batteries. I would def not use that many MPPTs. One or two RS 450 would also be not that bad with higher Voltages. What I really don't like here in this example is the lack of a good BMS. The shunt would have not been needed if there is a proper BMS as the BMS tells you all the data already. Also with DVCC activated on the System the BMS would fully control the charging and power output according to the data of the BMS. If you already invest so much in a system like this with Victron, this is not what I would propose to do. What about the balancing of the batteries? I only see a positive and negative connection on the battery pack?!

The best (and maybe the only practical) way to get 3 phase power from a 1-phase grid connection is via an AC-DC single phase battery charger. This could be a Skylla TG 48V/50A or a fourth Quattro or Multiplus used solely for the purpose of charging the system battery from the 1-phase AC grid. Then the Quattros will convert the DC back to 3-Phase AC.

@@danielardelian2 this is the way a multiplus 48 5000 would work great. The skyla is way overpriced for just a charger IMHO.

@@firefox7530 AC Coupled inverters are a more efficient solution for direct consumption of the PV energy during daytime, but slightly less efficient if that power is to be stored in the battery for later consumption. DC coupled MPPTs are the opposite. Efficient to get the energy into the battery, but then you have more losses when the Quattros convert DC to AC for consumption. And you mentioned "exporting to grid" above. When the grid is used for possible export of the surplus, the system frequency is set by the grid. There is no frequency shifting when connected to the grid. Victron uses Modbus to control Fronius inverters in on-grid mode. When in off-grid (Microgrid), they use frequency shifting because it's the fastest and most reliable way to communicate. PS: The "temporary" panels on the shed could provide enough energy to wake up the system if the battery has been completely drained during the previous night (i.e. Black Start). PS2: due to the 1:1 rule, AC Coupled PV is limited to 45 kW. So for 100 kW, they should probably split it in half. Half via AC Coupling and half via DC Coupling.

@@danielardelian2We have used a contactor on the grid supply to the L1 inverter. So the majority of the time the system is running in island mode. However if the batteries get too low the cerbo can tell the contact to close allowing us to use the full 200A charge of the Quattro. If you leave the grid connected all the time it will just keep the batteries charged making the solar pointless. Unfortunately the ESS assistant doesn’t work unless all 3 phases are connected to the relevant inverters, so you can’t set scheduled charging with SOC limits.

The pack design is quite different from the ones in the video. We will also be releasing a range of different batteries from 5Kwh to 15Kwh in different form factors. The 15Kwh pack will be provided with both a wall mount and wheels with rubber feet

@@LemonEnergy you have me interested then. I will wait for updates.

Thanks!! They’re blakladder craftsman trousers 👖

If it was nearer the house that would have been awesome

When I get time I try my best with this 😁. Will keep it in mind for future vids

Yes, they have a BMS inside every pack. The prototypes have a daly BMS although we have found quite a lot of limitations with them. The production packs will have a Seplos BMS

@LemonEnergy thanks for the reply. The DALY BMS'sdo not stack either, so the CerboGX wouldn't be able to pull the combined stats from them. With the Seplos at least, you can connect 16 packs in parallel. If you need more than 16 Battery Packs, there is a driver for the CerboGX where it can combine multiple CAN/RS485 batteries into a single virtual battery that the CerboGX can use.

@@gavinnoname1424Interesting I haven’t found that. It was going to be one of my next research items to work out how to do it as for large system 16 packs is quite limiting

You’ve never obviously been in an MCC before.

@@jurassicsparks5220 What's that got to do with this?

Been there done that 🙋. The instructions show like it's a normal switch but when you look closer on the actual switch top left goes to bottom right

Correct, or in some countries it’s maximum poop power trajectory

With the full 100Kw of solar wether it’s a combination of AC/DC attached or all DC there will be close to 2000A flowing in the bus bars.

What he said ^

@@LemonEnergy that's awesome cheers bud so obviously with the combination of the DC solar + required Ac + battery storage kicking. Looking forward to the next episode and will be keeping a look out for the battery's 😁

Watch the latest episode ‘£3900 electricity bill’ to see the finished product

The final retail price isn't fully decided yet, but it will be very comparable to some of the well know packs already on the market.

@@LemonEnergy Thanks for reply , my Father god rest his soul said with wise words one would like to think so = one of the hardest things to find in life is clarity, so with that in mind your answer seems rather a generic answer = none the wiser comes to mind , at least Father was more wise than I thought.

Victron has a 450v MPPT. Don't know why they aren't using it. Silly really

​@hein_mcleod agreed, it would save a chunk of money on reducing the thickness of the cables too.

The final system will have larger MPPT’s I believe, but this setup is a temporary setup for the panels on the roof to fire up the inverters

💨 🔥 🧨

The system

Remember that DC requires at least 50% bigger cables than AC for the same number of Amps.

@@kjetilsmme1604 yea but how many amps do you think the 150/60 mppt is going to pull from the panels? It’s only rated to 3.4kw

Google a ‘concentric neutral’ cable. Sounds like a variant of that. If it meets a BASEC standard ( printer on the cable jacket ) and it tests out and is installed ok, I’d be happy.

@@corymac Yea checked it out earlier pal. Complies with Regs. Every day is a learning day. Always good to double check. I come from an industrial apprenticeship so it's good to see stuff like this doing domestic work.

It’s an awesome idea, but the house is so far away it wouldn’t really be worth it. Maybe in future sand or ice batteries could work

Those would need 3 phase service, and Solaredge reliability is not good.