Device and method for angle stabilization of a virtual synchronous machine
AssigneeWobben Properties GmbH
InventorsRoberto Rosso, Sönke Engelken, Marco Liserre
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Abstract
Provided is a control circuit of a converter, in particular a power converter of a wind power installation, configured to control the converter in such a way that the converter emulates a behavior of a synchronous machine. The control circuit includes a power module for calculating a power change depending on a detected power and a correction module for setting a power set point, in particular for the converter, depending on the calculated power change.
Claims16
A control circuit of a converter,
- wherein the control circuit is configured to control the converter to cause the converter to emulate a synchronous machine, and
- wherein the control circuit comprises:
- a power circuit configured to determine a power change depending on a detected power;
- a power angle circuit configured to determine a power angle change depending on at least one detected frequency;
- a multiplier configured to multiply the power change and the power angle change to form a coefficient;
- and
- a correction circuit configured to set a power set point for the converter depending on the power change, the power angle change and the coefficient.
A method for controlling a power converter of a wind power installation to emulate a synchronous machine, comprising:
- detecting a power at an output of the power converter;
- calculating a power change depending on the detected power;
- determining a power angle change depending on at least one detected frequency;
- multiplying the power change and the power angle change to produce a coefficient;
- and
- setting a power set point for the power converter depending on the power change, the power angle change and the coefficient.
Dependencies are inferred from the claim text.