Hello there,
I have my system battery bank in 96VDC too, and it is indeed more complex to find components than when you stay below 48VDC. That being said, you can source the components directly from China, with a lot more to choose from. In my situation, I have 8 strings of 5 panels in series, attached to 4 industrial MPPT controllers from IPandee. Each string is at around 200VDC. I have no shading problem on my boat, other than droppings from birds, so going with panels in series to up the voltage was an easy choice.
In your case, as you are on a sailboat and you will have some shading, you are correct that you should avoid putting your panels in series. I would avoid adding a DC-DC converter to boost the panel voltage before the MPPT though. A DC-DC has a ~95% efficiency, so it is a shame to lose power there. We never have enough power... ;-)
Based on what you described, I would go with a product such as this one https://www.aliexpress.com/item/1005005825627193.html, one per panel, and keep a few as spares. See Alibaba or Aliexpress for other products, I just Googled and found that one, but I am sure there are other brands doing boost and MPPT charging for 96VDC banks.
As an additional safety precaution, I would suggest you add a way to cut power from the panels to the MPPT charger when the BMS signals that the charge should stop. Cheap electronic components like the one I linked do not have compatibility to communicate on the BMS data bus to start and stop the charge, and only stop the charge when the battery bank reaches a set voltage. The key concern here is if there is a bug in the MPPT software that would not stop the charge, this could lead to a very serious security hazard, so the best way to avoid that is to cut the feed from the panel to the MPPT when the BMS says "stop the charge".
I hope this helps.
Jerome
I have the sailboat kit from Thunderstruck-EV, configured for 96v upon their advice for my power needs. Had I known the grief it would cause trying to find the electronics for 96v, I would never have gone with this. Unfortunately, I've already installed he ME1616 and had a custom gearbox machined for it. It would cost thousands to reconfigure the system for two 48v motors at this point.I'm trying to set up the solar system rn, and wondering if anyone else has done this. I bought four Hyundai panels, bifacial, 48VOC. I thought I was going to just hook them up in series, but it's been pointed out to me that partial shading of the solar array would shut the whole thing down. So, as a starting point, I made a design:Having a heck of a time finding a DC-DC converter with a ~100v output. Saw one on Amazon, (DROK DC Boost Converter 900W) with a prominent warning label about frequent returns.Maybe I'm going about this the wrong way. If anyone has done this, would greatly appreciate your advice.
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