CPC H02J 3/381 (2013.01) [H02J 3/32 (2013.01); H02J 3/36 (2013.01); H02J 3/40 (2013.01); H02J 3/46 (2013.01); H02J 2300/28 (2020.01)] | 13 Claims |
1. A system for supplying electric power to a grid and for supporting the grid, the system comprising
a power generator having a main converter coupled to the grid,
an energy buffer having an energy storage and a secondary converter coupled to the grid in parallel with the main converter,
a grid stability monitor configured to provide a grid stability indication representative of a stability level of the grid, and
a controller configured to control the main converter and the secondary converter in dependency on the grid stability indication such that
when the stability level is at least equal to a predetermined threshold value, the main converter is controlled to operate as a virtual synchronous machine and the secondary converter is controlled to operate to maintain a predetermined amount of energy in the energy storage, and
when the stability level is below the predetermined threshold value, the secondary converter is operated to provide a predetermined response in order to support the grid stability.
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