Dynamic control of trip temperature for power module
AssigneeVestas Wind Systems A/S
InventorsThomas Lundgren Andersen, Kristian Bonderup Pedersen, Hardik Bodiwala
Life of this patent
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Abstract
A wind turbine with a power converter system having a plurality of power modules each with a semiconductor component, such as IGBTs, and a temperature sensor arranged in thermal connection with the semiconductor component for generating a temperature signal according to a sensed temperature. A controller receives the temperature signals from the respective power modules, and the controller can shut down operation of the power converter system in case one or more of the temperature signals indicate a temperature exceeding a trip temperature threshold, wherein the controller is arranged to monitor at least one parameter and to update the trip temperature threshold accordingly.
Claims17
A wind turbine comprising a power converter system, comprising:
- a plurality of power modules each comprising:
- at least one semiconductor component, and
- a temperature sensor arranged in thermal connection with the semiconductor component, and being arranged to generate a temperature signal accordingly, and
- a controller arranged to receive temperature signals from the respective power modules, and to shut down operation of the power converter system in case one or more of the temperature signals indicate a temperature exceeding a trip temperature threshold, wherein the controller is arranged to monitor at least one parameter and to update the trip temperature threshold according to the at least one parameter, wherein the at least one parameter comprises a liquid temperature signal corresponding to a temperature of a liquid used to cool the plurality of power modules.
A method for controlling power conversion in a wind turbine, wherein the wind turbine comprises a power converter system with a plurality of power modules each comprising at least one semiconductor component;
- the method comprising:
- sensing a temperature at a point with thermal connection to the at least one semiconductor component in each of the plurality of power modules;
- monitoring at least one parameter;
- updating a trip temperature threshold according to the at least one parameter, wherein the at least one parameter comprises a liquid temperature signal corresponding to a temperature of a liquid used to cool the plurality of power modules;
- comparing the sensed temperatures with the updated trip temperature threshold;
- and
- shutting down operation of the power converter system if one or more of the sensed temperatures exceeds the updated trip temperature threshold.
A non-transitory computer readable medium containing a program which, when executed, performs an operation for controlling power conversion in a wind turbine, wherein the wind turbine comprises a power converter system with a plurality of power modules each comprising at least one semiconductor component;
- the operation, comprising:
- sensing a temperature at a point with thermal connection to the at least one semiconductor component in each of the plurality of power modules;
- monitoring at least one parameter;
- updating a trip temperature threshold according to the at least one parameter, wherein the at least one parameter comprises a liquid temperature signal corresponding to a temperature of a liquid used to cool the plurality of power modules;
- comparing the sensed temperatures with the updated trip temperature threshold;
- and
- shutting down operation of the power converter system if one or more of the sensed temperatures exceeds the updated trip temperature threshold.
Dependencies are inferred from the claim text.