摘要:
The invention relates to a method of automatically identifying suggestions regarding how to remedy wind turbine faults, said method comprising: - establishing and storing a plurality of fault reports (FR), each fault report (FR) at least comprising fault symptom information (FSI) comprising data of identified fault symptoms of a previously occurred fault, and fault remedy information (FRI), said fault remedy information (FRI) comprising data regarding how said previously occurred fault was remedied, - collecting fault related data (FRD), said fault related data (FRD) at least comprising data from one or more wind turbines exposed to an occurring fault (Fl), - by means of a data processing arrangement (PA) performing data processing, said data processing comprising correlation of said fault related data (FRD) with data from one or more of said stored fault reports (FR), and - based on said correlation establishing one or more fault remedy suggestions (FRS) comprising suggestions regarding how to remedy said occurring fault (Fl) related to said one or more wind turbines based on said data processing. The invention furthermore relates to a system for automatically identifying suggestions regarding how to remedy wind turbine faults.
摘要:
The invention regards an apparatus for estimating a resonant frequency of a wind turbine tower, comprising a measuring module adapted for measuring acceleration values of the wind turbine tower wherein the acceleration values represent acceleration of the wind turbine tower, a filter module adapted for receiving the measured acceleration values, the filter module comprises a variable filter wherein the variable filter is adapted to attenuate frequencies in a band hereby attenuating frequencies for an output of the filter module, an adaptive algorithm module comprising an adaptive algorithm wherein the adaptive algorithm module is adapted for communicating with the filter module and wherein the adaptive algorithm is adapted to minimize the energy of the output of the filter module by adjusting the band of attenuated frequencies, a resonant frequency estimating module adapted for estimating the resonant frequency of a wind turbine tower based on the attenuated frequencies.
摘要:
The invention regards a method for estimating the temperature of a semiconductor chip accommodated in a power semiconductor device in operation, such as an IGBT power module, the method comprising the steps of; while the power semiconductor device is in operation determining a voltage drop over the power semiconductor device for at least a first value of applied current and; estimating the temperature of the semiconductor chip by evaluating the relationship between the determined voltage drop and the first value of applied current on the basis of a semiconductor chip temperature model.
摘要:
A control system for a wind turbine or a wind power park is disclosed, comprising a plurality of control stations arranged in a hierarchical master/slave configuration using a real-time communication system, each comprising a generic control unit in the form of a fully equipped computer module and a generic power module,one of which is arranged to act as a gateway or interface for communication with other control stations one level higher or one level lower in the control station hierarchy, wherein one or more of the control stations further may comprise a dedicated control unit adapted to a specifically assigned control task and/or one or more I/O unit configured to receive inputs from and generate outputs to parts of the wind turbine outside the control system. Furthermore, a wind turbine and a wind power park comprising such a control system are disclosed.
摘要:
A method for controlling a wind power park is disclosed, comprising the steps of: collecting information relating to meteorological conditions at the location of the wind power park, estimating for each of a plurality of the wind turbines the production costs per unit energy at different load levels of the respective wind turbine, collecting information from a utility grid operator relating to energy prices and possible requirements relating to the amount of power delivered from the wind power park to the utility grid, controlling the wind power park by deciding on a total amount of power to be delivered from the wind power park and distributing the decided power production between individual wind turbines, and repeating the above steps in order to obtain a dynamic control of the wind power park. Further, a wind power park being controlled by such method is disclosed.
摘要:
A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal from a real-time communication system is used as synchronization means for the switches in the power stacks. One or more controllers controlling the switching times of the switches in one or more power stacks may be connected directly to one or more real-time communication buses of the real-time communication system, using the distributed clock signal for synchronization of pulses when using the one or more power stacks for pulse-width modulation of a desired AC output voltage. Furthermore, a power converter comprising such a control system and a wind turbine comprising such a power converter are disclosed.
摘要:
The invention regards a method for estimating the temperature of a semiconductor chip accommodated in a power semiconductor device in operation, such as an IGBT power module, the method comprising the steps of; while the power semiconductor device is in operation determining a voltage drop over the power semiconductor device for at least a first value of applied current and; estimating the temperature of the semiconductor chip by evaluating the relationship between the determined voltage drop and the first value of applied current on the basis of a semiconductor chip temperature model.
摘要:
The invention regards an method for estimating the end of lifetime for a power semiconductor device, such as an IGBT power module, comprising the steps of; establishing the temperature of the power semiconductor device, determining the voltage drop over the power semiconductor device for at least one predetermined current where the current is applied when the power semiconductor device is not in operation, wherein the end of lifetime is established dependent on the change in a plurality of determined voltage drops.