Method for current limitation of a virtual synchronous machine
AssigneeWobben Properties GmbH
InventorsRoberto Rosso, Sönke Engelken, Marco Liserre
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Abstract
Provided is a control module of a converter, in particular a power converter of a wind power installation, which is configured to control the converter in such a way that the converter emulates a behavior of a synchronous machine, comprising an, in particular internal, control loop which has an, in particular adjustable, virtual admittance by means of which the converter is controlled in order to emulate the behavior of the synchronous machine.
Claims16
A control circuit of a power converter of a wind power installation configured to control the power converter such that the power converter emulates a synchronous machine, comprising:
- an internal control loop having a virtual admittance controller configured to provide a virtual admittance that is adjustable, wherein the control circuit causes the power converter to be controlled, based on the virtual admittance, to emulate the synchronous machine,
- wherein the internal control loop includes an admittance adjustment circuit configured to modify the virtual admittance,
- wherein the admittance adjustment circuit includes a comparator configured to:
- receive a first variable for a resistive part of the virtual admittance that is adjustable or a second variable for an inductive part of the virtual admittance that is adjustable;
- and
- compare the first variable with a determined value for the resistive part of the virtual admittance or compare the second variable with a determined value for the inductive part of the virtual admittance.
Dependencies are inferred from the claim text.