Low voltage ride through for wind turbine generators

A method comprising:

• providing power to wind turbine components using a generator of the wind turbine;
• detecting a low voltage event;
• receiving power from an uninterruptible power supply to a first subset of wind turbine components, wherein the first subset of wind turbine components comprises a blade pitch controller to selectively power the blade pitch controller to maintain a rotor speed below a predetermined overspeed limit during the low voltage event;
• and
• disconnecting a second subset of wind turbine components from the generator during the low voltage event.

An apparatus comprising:

• means for providing power to wind turbine components using a generator of the wind turbine;
• means for detecting a low voltage event;
• means for providing power from an uninterruptible power supply to a first subset of wind turbine components, wherein the first subset of wind turbine components comprises a blade pitch controller to selectively power the blade pitch controller to maintain a rotor speed below a predetermined overspeed limit during the low voltage event;
• and
• means for disconnecting a second subset of wind turbine components from the generator during the low voltage event.