Both Eltek as well as Huawei will work and both are well supported with open source projects for settings and control. As I only have experience with Huawei I’d recommend an newer models such as the R4850G5 (3kW continuous) or even an R4875G1(or G5?) (4kW continuous and AC & DC input ready) for having the functionality of setting a fixed maximum (AC) input power limit (on top of having programmable default CC-CV DC output settings (active when an external can-bus control signal is absent for longer then 60 seconds). When used at half or less of their rated power these are extremely efficient too, 96% or higher. You would only need can-bus to set the default values correct once. Pretty handy stuff.
R4875G5.Rectifier.User.Manual.V2.3.pdf (563.5 KB)