I got 3 hyper 2000. Each one is on a different phase. In addition I have a further roof pv system of 10kw.
So the hyper 2000 are charged by AC and DC. It's managed by Zenki Hems and a Shelly 3em pro.
Problem is, when a powerful consumer is turned on, all hypers start pushing energy to level the grid consumption to 0. Once the consumer is turned off, there is an energy flow from the hyper batteies to the grid.
Now all 3 hypers start ozillating. They constantly charge and decharge themselv. I think the PID control is not very good from zendure. I think it needs a higher integral part, in order to prevent pushing energy back and forth.
Anybody with similar Hysterese problems and maybe a solution?