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公开(公告)号：EP3624302A1
公开(公告)日：2020-03-18
申请号：EP19197317.1
申请日：2019-09-13
摘要： A method (200) for monitoring a bank of ultracapacitors (72) configured to power an alternating current (AC) pitch motor (33) of a pitch system (70) in a wind turbine (10) is provided. The method (200) includes obtaining, by one or more control devices (60), data indicative of a voltage associated with the bank of ultracapacitors (72). The method (200) includes conducting, by the one or more control devices (60), a test operation of the bank of ultracapacitors (72) at predetermined intervals of time to determine a capacitance associated with the bank of ultracapacitors (72). The method further includes performing, by the one or more control devices (60), one or more control actions based, at least in part, on the capacitance or the data indicative of the voltage.
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2.发明公开
公开(公告)号：EP3597910A1
公开(公告)日：2020-01-22
申请号：EP19186802.5
申请日：2019-07-17
发明人： Danielsen, Darren John , Verzella, Philip James , Gandhi, Jignesh Govindlal , Souri, Ramy Michael , Davidson, James Paul , Tschappatt, Christopher Lee
摘要： A method (100) for reducing loads of a wind turbine (10) includes determining an angular pitch speed parameter of the rotor blade (22) of the wind turbine (10). The method (100) also includes determining an operational state of the wind turbine (10). Further, the method (100) includes comparing the angular pitch speed parameter to a predetermined parameter threshold during turbine shutdown and/or a commanded pitch event. If the operational state corresponds to a predetermined operational state, the method (100) includes yawing a nacelle (16) of the wind turbine (10) away from an incoming wind direction when the angular pitch speed parameter is below the predetermined parameter threshold during the turbine shutdown and/or the commanded pitch event.
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