Auxiliary power supply
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsSamuel Hawkins, Rene Salkvist Nielsen
Life of this patent
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Abstract
An auxiliary power supply arrangement of a wind turbine is provided including a standby power supply configured to cover the average power requirements of auxiliary devices of the wind turbine; and an energy storage unit, which energy storage unit is configured to cover transient power requirements of the auxiliary devices and/or to supplement the standby power supply in covering the transient power requirements of the auxiliary devices. Also provided is a wind turbine including such an auxiliary power supply arrangement adapted to supply power to auxiliary devices of the wind turbine during an off-grid state of the wind turbine; and a method of operating such a wind turbine.
Claims18
An auxiliary power supply arrangement of a wind turbine, comprising:
- a standby power supply configured to supply sufficient power to cover the average steady state power requirements of auxiliary devices of the wind turbine when the wind turbine is operating in an off-grid mode, wherein the standby power supply is one device;
- and
- an energy storage unit, wherein the energy storage unit is configured to cover peak transient power requirements of the auxiliary devices and/or to supplement the standby power supply in covering the peak transient power requirements of the auxiliary devices,
- wherein the auxiliary devices comprise devices required temporarily during stages of installation, commissioning, or maintenance, and
- wherein the standby power supply has a capacity that is less than a reference capacity that covers the peak transient power requirements of the auxiliary devices.
Dependencies are inferred from the claim text.