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US 8,796,872 B2Granted
Wind turbine generator
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsShinji Arinaga, Tsuyoshi Wakasa, Takatoshi Matsushita, Masaaki Shibata
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Abstract
An object is to provide a wind turbine generator that is capable of continuously operating an auxiliary unit even when a grid fault occurs. Provided is a wind turbine generator including an auxiliary-unit breaker provided in a power line that connects an auxiliary unit to a power grid, wherein the auxiliary-unit breaker has a current-resisting capacity within a range that tolerates a current that flows in a low-voltage event and does not exceed a tolerable current of a motor provided in the auxiliary unit.
Claims5
A wind turbine generator comprising:
- a generator;
- a main breaker provided in a power line that connects the generator to a power grid;
- and
- an auxiliary-unit breaker provided in a power line that connects an auxiliary unit to the power grid, the auxiliary-unit breaker being configured to break the connection of the auxiliary unit to the power grid in respond to an overcurrent that flows in the auxiliary-unit breaker,
- wherein the auxiliary-unit breaker has a current-resisting capacity within a range that tolerates a current that flows in a low-voltage event and that does not exceed a tolerable current of a motor provided in the auxiliary unit, and
- the main breaker has a current-resisting capacity that is superior to the current-resisting capacity of the auxiliary-unit breaker and that is within a range that does not exceed a tolerable current of the generator.
3 more elements
Dependencies are inferred from the claim text.