Multi HS19 Solar 15k

[PeakShaving (Ryan @ Peak Shaving)]

I personally think Victron would have been better developing a 15kW Single Phase HV inverter. One to a similar speciation of what they have launched at a similar price point would have been excellent with so many applications.

There’s a massive gap in the ESS market with lack of single phase HV Battery Inverter solutions. Main segment is all those that don’t have a 3-phase grid connection, that need higher power and a sizeable solar and battery solution.

Of course there is lots of small residential Stackable HV battery and inverter solutions from many other brands, however these typically are 3-8kW max rating, and have little scalability. Also far from future proof, as the products tend to have a short lifecycle in terms of availability and be replaced with newer designs.

I am on the lookout for a decent HV Battery Inverter, single phase with high power capability, 10kW or more that’s future proof and scalable

Using HV batteries is much more cost effective, they are cheaper containing much less power electronics, BMUs on each module or pack instead of BMSs, and lot less cabling and and accessories needed. Also operating efficiency is much better than working with unnecessary high current.

Has Victron any intention of offering a single phase HV HS19 solution in the future?

[Diessel]

@PeakShaving

I am on the lookout for a decent HV Battery Inverter, single phase with high power capability, 10kW or more that’s future proof and scalable

Using HV batteries is much more cost effective, they are cheaper containing much less power electronics, BMUs on each module or pack instead of BMSs, and lot less cabling and and accessories needed. Also operating efficiency is much better than working with unnecessary high current.

1. Judging by the misconceptions you have about HV systems, I’d venture to say you’ve never actually worked with them and have no idea what you’re in for once they’re in service - even assuming the system has been designed properly.

@PeakShaving

Has Victron any intention of offering a single phase HV HS19 solution in the future?

2. I’m not an employee of Victron Energy. I have no knowledge of their product development plans or upcoming product launches, and even if I did, that information would be commercially confidential and only available to staff who have signed an NDA.

UPD:

Spoiler

3. Also, I doubt Voctron would be able to interest or motivate me by bringing me on as a systems solutions designer and supervisor for individual projects.

[OGPS (Ed @ Off-Grid Power Systems - offgridps.com)]

@Diessel

1. Judging by the misconceptions you have about HV systems, I’d venture to say you’ve never actually worked with them and have no idea what you’re in for once they’re in service - even assuming the system has been designed properly.

Please keep your tone respectful or say nothing at all. Instead of being an ass, you could explain why you think the OP misunderstands some things and offer your opinions or guidance on a better way.

Be better, do better.

[Matsuda]

Using HV batteries is much more cost effective, they are cheaper containing much less power electronics, BMUs on each module or pack instead of BMSs, and lot less cabling and and accessories needed

I’m not completely clear on these points perhaps because I’m less familiar with HV systems, could you shed some light on it?

• Power electronics → Don’t HV systems actually have more power electronics? Usually a DC-DC converter in each module and a sequential converter+inverter in the unit itself.
• BMU vs BMS – what is the benefit? A unit still consists of cells that need to be in balance with one another.
• Less cabling and accessoiries → I suppose you refer to lack of need for thick cabling and a heavy-duty bus-bar system.

[PeakShaving (Ryan @ Peak Shaving)]

Yes for large battery banks and when requiring high power, typically 20kW upwards, HV Battery battery banks offer many advantages.

In answering your questions, I’ll refer to an example, a 42kWh Pylontech HV PowerCube H2 Kit, to power a typical 15kW HV inverter. Its a good example representative of most other HV battery solutions.

In such a setup, each individual battery module typically has just an internal battery monitoring unit; cell voltage and temperature, and electronics for cell balancing, but no high power electronics, MOSFETs etc for switching, this is done by a single Battery Management System. At the top in the Pylontech stack the BMS contains charge and discharge contactors for power switching.

The result is a 42kWh HV kit like above is less cost to buy compared to the equivalent capacity in 48V, e.g Pylontech US5000C modules as example.

Batteries are daisy chained together, little cabling required. The BMS typically has inbuilt isolation switch and fuses. The result is little if any additional balance of system components are needed to interface between the BMS and the inverter. Just a single HV cable set which are now very low cost.

High voltage inverters are also smaller and more cost effective per kW of power capacity, as they have less electronics. Bear in mind with a HV setup you are typically working with a 10th of the current or less compared to 48V.

On an equivalent 48V setup, heavy cabling, much more quantity of cable, high current busbars, large current fuse/isolation switch for inverter(s) and multiple smaller fuses to protect each battery string are required. Careful attention is needed on arrangement to ensure equal current sharing across the battery modules.

This additional balance of system materials add up to a lot of additional cost and time to setup compared to HV.

[PeakShaving (Ryan @ Peak Shaving)]

I started working with HV systems last year, not simple off the shelf systems, but repurposing 2nd Life EV and commercial batteries.

Below is some pictures of an example custom 576V 177Ah 100kWh+ system assembled earlier this year and currently operational for charging EVs

10 x Battery Monitoring Units with active cell balancing, and a Master Battery Management Controller installed on CALB NMC modules in 160S configuration.

Powers a 25kW 3-phase HV inverter. When charging vehicles at 22kW, only working with 30A - 35A of current.

A lot less cost and more efficient than 48V systems!

The community is for sharing new ideas, whether right or wrong, problems and knowledge. No one is an expert, there’s always learning to be done.

The HS19 inverter would be of interest to many doing similar systems with 2nd Life batteries whether Victron has intended to capture this segment of the market or not with the new product.