Controllable grid interface for microgrids
OwnerBehnam Tamimi, Claudio Cañizaresinventors
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Abstract
A microgrid connector controller (MGC) for transferring power between a power grid and a microgrid via an AC link. The MCG includes a pair of bidirectional AC/DC converters coupled to a common DC link and each having an AC line. One converter closer to the microgrid is configured to regulate frequency of AC voltage of its AC line to a predetermined frequency. The AC link includes the AC lines coupled in series with a terminal the microgrid, and a current divider coupled to a terminal of the power grid. The current divider is configured to set the first converter's current level lower than the second converter's current level.
Claims12
A microgrid connector controller for coupling a first terminal of a first AC power grid to a second terminal of a second AC power grid, comprising:
- a first bidirectional AC/DC converter coupled to a DC link and having a first AC line;
- a second bidirectional AC/DC converter coupled to the DC link, having a second AC line coupled in series with the first AC line, and configured to regulate frequency of AC voltage of the second AC line to a predetermined frequency;
- an AC link configured to transfer active power from the first power grid to the second power grid including
- the first and second AC lines coupled in series with the second terminal, and
- a current divider coupled to the first terminal, the first AC line and the second AC line, for setting a current of the second bidirectional AC/DC converter to be larger than a current of the first bidirectional AC/DC converter.
Dependencies are inferred from the claim text.