Controllable power backup system for wind turbine
AssigneeVestas Wind Systems A/S
InventorsMorten Bagger Søgaard, Niels Erik Danielsen, Alun Jones, Carsten Lindgaard Jensen
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Abstract
The present invention relates to a wind turbine comprising an internal power supply grid for distributing power to a number of power consuming units of the wind turbine, the wind turbine further comprising a power backup system connected to the internal power supply grid for supplying power to said internal power supply grid during a grid fault, wherein the power backup system comprises a controllable power storage module providing a total backup voltage that falls within a nominal voltage range of the internal power supply grid of the wind turbine. The present invention also relates to a power backup system and an associated method.
Claims20
A wind turbine, comprising:
- an internal power supply grid for distributing power to a number of power consuming units of the wind turbine;
- and
- a power backup system connected to the internal power supply grid for supplying power to said internal power supply grid during a grid fault, wherein the power backup system comprises a controllable power storage module providing a total backup voltage that falls within a nominal voltage range of the internal power supply grid such that a voltage level of the total backup voltage from the controllable power storage module is unmodified when provided by the power backup system to the internal power supply grid.
A power backup system for a wind turbine, comprising:
- an internal power supply grid for distributing power to a number of power consuming units of the wind turbine, the power backup system being connected to the internal power supply grid for supplying power to said internal power supply grid during a grid fault;
- and
- a controllable power storage module providing a total backup voltage that falls within a nominal voltage range of the internal power supply grid such that a voltage level of the total backup voltage from the controllable power storage module is unmodified when provided by the power backup system to the internal power supply grid.
A method for operating a power backup system of a wind turbine, wherein the power backup system comprises a controllable power storage module comprising a string of series connected controllable power storage units, wherein the string of series connected controllable power storage units provides a total backup voltage that falls within a nominal voltage range of an internal power supply grid of the wind turbine, the method comprising:
- individually controlling the controllable power storage units of the string such that a voltage level of the total backup voltage from the controllable power storage module is unmodified when provided by the power backup system to the internal power supply grid.
Dependencies are inferred from the claim text.