Recent content by mandrews44

16.6 amps would require a hefty cable to the panels for the energy is not the same through wire loss. :) I have not seen many controllers that will handle > 100v input and I have seen higher than rated voltages coming from my panels during the winter. I normally run ~70v from the panels and...

I'd say you might want to contact the manufacturer of the batteries and make sure the BMS in each of them will handle 48 volts. They also need to be the same general age and even better they should be tested to be closely matched. The problem with this is you won't have balancing between the...

At first glance, I can only think the charging profile is set to 13.35v as 100%. The voltage of the LIFEPO4 cell should need to be closer to 14.6 to be fully charged. At least at 13.7 to be near the top before the 14.6 voltage is seen as a spike. The voltage range for Lifepo4 is very flat...

While it might be improved and permit 24v total, most circuit designs I've seen at best use 2x max design voltage. Even with a BMS that states it handles series, they all have max voltage limit on the mosfets. Typical is 30 volts. They may work for a time at 48v but I'd imagine their days are...

You might want to make sure the BMS that you use is setup to support serial to 48 volts. Most BMS's I've seen will not handle more than 2x stated voltage in a series configuration. This might be why the BMS's are no longer working. If I was building a 48v system, I would not put 4 12v packs in...

I have 2 400ah shunbin batteries and I replaced all of the BMS's with Overkill. I don't recall your voltage, I'm sure he either has or can get 12v or 24v. The one I used the 12v 120A version and it is working great. Between using the Overkill BMS and an active balancing addon, both are doing well.

I am not familiar with that recommended battery supplier but I know there is a big issue with lithium batteries and car charging systems. Hooking up a lithium battery to a car charging system will overload your alternator and you will be replacing it quite often. If you add a DC to DC...

That is why I mentioned that it would be a greater gain to address the loads than find a way to make a 85% efficient inverter 99.5% efficient. With non-PFC switch mode power supplies in just about everything these days, they waste up to 50% of the power the inverter generates. If I was to go...

Yea, reduces current, increases power factor.

Nice.. If I can keep my data here, I prefer complicated.. :D

I'd like to see this topic started in June expanded upon.. :D A Scope does come in handy.. With induction motors, the magnetic field is generated 45 degrees out and it is what creates the power factor. Adding a capacitor to this moves this power requirement closer to 0 and reduces the power...

This started on a raspberry pi but now served off windows using DOTNET core. Using the S32 now for Temp sensors / relay services using json, that was not from the S32 but I could. It is using SignalR and a SOA2.0 message server that I developed. Everything else on it is JavaScript that can be...

If it uses a switch mode power supply, Cable Box, Modem or PC, it is all the same to me. :P

https://www.researchgate.net/figure/Single-line-diagram-of-APF-with-a-non-linear-load_fig1_223224057

I will have to find the scope pictures when I have more time.. Clipping the top of the wave is exactly what the switching power supplies are doing.. The solution to this is to introduce an AC-DC circuit with a APF controller to greatly reduce the losses. I want to build this but at the same...