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AssigneeDelta Electronics (Shanghai) Co., Ltd.
InventorsLiang Cao, Li Cai, Yan-Song Lu
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A device and a method for detecting a crowbar circuit in a wind turbine are provided, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, and the method comprises: electrically coupling a detection module to the crowbar circuit; inputting a first control signal into the crowbar circuit, to turn on the crowbar circuit; providing a three-phase voltage signal to the crowbar circuit via the converter, wherein voltage signals in any two adjacent phases has a predetermined phase angle difference; reading the first detection signal outputted by the detection module, to determine whether the crowbar circuit is normally thrown into the wind turbine; inputting a second control signal to the crowbar circuit, to turn off the crowbar circuit; and reading again the second detection signal outputted by the detection module, to determine whether the crowbar circuit is normally cut out from the wind turbine.
A method for detecting a crowbar circuit in a wind turbine, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, wherein the method comprises:
A device for detecting a crowbar circuit in a wind turbine, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, and the device comprises:
Dependencies are inferred from the claim text.