Method and system for enhancing electrical power production by a power generation system by controlling switches to place a rotor-side converter in parallel with a line-side converter

A power generation system (100, 200, 300, 400), comprising:

• a prime mover (102);
• a doubly-fed induction generator (DFIG) (104) operatively coupled to the prime mover (102), wherein the DFIG (104) comprises a rotor winding (126) and a stator winding (122);
• a rotor-side converter (106) electrically connectible to the rotor winding (126);
• a line-side converter (108) elect:
• deafly connectible to a point of common coupling (PCC) (114), wherein the line-side converter (108) and the rotor-side converter (106) are coupled to each other via a direct current (DC) link;
• a secondary power source (110, 401) electrically coupled to the DC-link;
• and
• a control sub-system comprising:
• a plurality of switching elements (130, and 132 or 201);
• and
• a controller (136) operatively coupled to the plurality of switching elements (130, and 132 or 201) and configured to selectively control switching of one or more switching elements of the plurality of switching elements (130, and 132 or 201) based on a value of an operating parameter corresponding to at least one of the prime mover (102), the DIEM (104), or the secondary power source (110, 401) to disconnect the rotor winding from the rotor-side converter and connect the rotor-side converter (106) in parallel with the line-side converter (108) at the PCC to increase an electrical power production by the power generation system (100, 200, 300, 400).