question

mihair avatar image
mihair asked

Why Power Factor vary widely when Multi 5000/48 charger is enabled via AC-IN control in ESS system?

Hi,

In my ESS system I have an Energy Management Energy Analyzer EM111 used as grid meter.

Watching closely all the outputs of EM111, I have discovered that when my ESS system has the charger enabled (ignore AC-IN disabled via assistants) the Power Factor vary widely in both directions, capacitive and inductive, in the range of +/- 0,7. At the same time the ESS system struggle to keep the grid setpoint stable and a lot of energy from the system is wasted into the grid or consumed from the grid with no loads active.

How is this possible?

Another observation is the fact that when AC coupled Solarmax inverter is active the PF variation is reduced and the system is able to keep steady the grid setpoint.

Is something wrong with my Multi or this is normal behavior?


Thanks,

Mihai

MultiPlus Quattro Inverter Charger
3 comments
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @MihaiR

I suspect you measure 'relatively' high numbers, because actual power is around zero. so at 10 watts, power factor can look extreme.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.