In one line
Inverter capability to remain connected to the grid during voltage disturbances rather than disconnecting immediately.
What it means
Fault Ride-Through (FRT) is the capability of an inverter to remain connected and operating during grid voltage disturbances (Low-Voltage Ride-Through, LVRT) or high-voltage events (HVRT). FRT requirements are codified in grid codes like IEEE 1547-2018 and EN 50549, and are essential to maintain grid stability when faults occur.
Related terms
Browse every term in the renewable energy glossary, or read the latest analysis on Inverters & power electronics.