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US 2014/0112032 A1Published application
Wind turbine fault detection circuit and method
AssigneeVestas Wind Systems A/S
InventorsMasoud Parkhou, Xue Wen Luo, Michael Casem Tumabcao
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Abstract
A wind turbine fault detection circuit and method is disclosed herein. In a described embodiment, the wind turbine fault detection circuit comprises a magnetometer in the form of a hall-effect sensor coupled between a power converter and a ground element of the power converter and configured to measure a ground current from the power converter to obtain a real ground current Ig; and a comparator configured to determine presence of a fault based on the real ground current.
Claims35
A wind turbine, comprising
- a power converter arranged to receive electrical power from an electrical generator and to provide conditioned electrical power, comprising
- a plurality of electrical switches operating at a high frequency,
- the power converter housed in a power converter cabinet,
- a fault detection circuit comprising
- a magnetometer configured to measure a ground current flowing from the power converter cabinet to a ground element, to obtain a real ground current;
- and
- a comparator configured to determine presence of a fault based on the real ground current.
4 more elements
A fault detection method for a wind turbine, the method comprising
- measuring a ground current flowing from a power converter cabinet housing a power converter to a ground element to obtain a real ground current;
- and
- determining presence of a fault based on the real ground current.
Dependencies are inferred from the claim text.