I have a grid tie inverter powered by a 24V battery connected to a circuit that is on a Generator. The grid tie inverter syncs well and outputs 655 – 800W according to the Load. As the load changes the Generator supply rises or falls accordingly.
There is a 30A charger in the design to top up the battery. The charger can be switched in or out.
An anomaly has me confused as follows:
When the charger is On (and the gauge shows 30A), the Load on the Generator should rise by 700W but does not.
What am I missing please?
Best Answer
The power to run your charger is coming from the inverter, not the generator. This is because the inverter produces a voltage a bit higher than the grid voltage (the generator in your case). This is so the inverter can provide power to the grid when the local load is sufficiently low. I can't see a way to force the charger to take its power only from the generator with your setup. My suggestion is: don't connect both the inverter and the charger simultaneously. Connect only the charger when the load is low and the battery needs charging. Connect only the inverter when you need to power a high load.