System and method for operating an asynchronous inverter-based resource as a virtual synchronous machine with storage

An inverter-based resource connected to a power grid, the inverter-based resource comprising:

• an asynchronous machine;
• a first converter;
• a second converter;
• at least one additional device coupled to terminals of the first converter;
• and
• at least one controller for controlling the inverter-based resource to provide grid-forming control thereof, the controller comprising at least one processor, the at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• emulating at least one of the at least one additional device or the first converter as a first virtual synchronous machine;
• and
• coordinating operation of the first virtual synchronous machine and the second converter using a vector-control approach to control at least one of voltage and frequency at a point of interconnection between the at least one inverter-based resource and the power grid in a closed loop manner.

A wind turbine power system connected to a power grid, the wind turbine power system comprising:

• a power converter comprising a rotor-side converter and a line-side converter;
• a doubly-fed induction generator;
• at least one additional device coupled to terminals of the line-side converter;
• and
• at least one controller for controlling the wind turbine power system to provide grid-forming control thereof, the controller comprising at least one processor, the at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• emulating at least one of the at least one additional device or the line-side converter as a first virtual synchronous machine;
• and
• coordinating operation of the first virtual synchronous machine and the rotor-side converter using a vector-control approach to control at least one of voltage and frequency at a point of interconnection between the wind turbine power system and the power grid in a closed loop manner.