Grid-connected inverter has anti-reverse flow

What does an inverter do when the grid is available?

When the grid is available, a hybrid inverter acts like a grid-tie power source to both essential and non-essential loads. It only supplies power to the backup side when the grid fails.

What is the control design of a grid connected inverter?

The control design of this type of inverter may be challenging as several algorithms are required to run the inverter. This reference design uses the C2000 microcontroller (MCU) family of devices to implement control of a grid connected inverter with output current control.

How does an anti-reverse current meter work?

Anti-reverse current working principle: Install an anti-reverse current meter or current sensor at the grid connection point. When it detects that there is current flowing to the grid, a signal is sent to the inverter through 485 communication, and the inverter reduces the output power until the reverse output current is zero.

Can an inverter restart itself after a grid fault?

An inverter must be able to restart itself after a grid fault (if there are no other faults). For example, voltage peaks which occur during sudden deactivation could trigger cut-outs in the system. If the inverter does not restart itself, a service team will then have to come on site in order to restart the system.