DocumentCode :
676619
Title :
Fault tolerance for wind turbine power converter
Author :
Feng Yanhui ; Zhou Junwei ; Qiu Yingning ; Feng Kai
Author_Institution :
Sch. of Energy & Power Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
fYear :
2013
fDate :
9-11 Sept. 2013
Firstpage :
1
Lastpage :
4
Abstract :
Power converter is one of the key assemblies in modern wind turbines. In modern wind turbines with variable speed generator configurations, i.e. Doubly Fed Induction Generator or Synchronous Generator, back to back power converters are introduced to control the speed and torque of generator, the active and reactive power fed into the Grid. The power converter in variable speed wind turbines is an essential assembly which is sensitive to failures. The power converter malfunction will cease the operation of wind turbine and generate disturbance to the Grid. Recently, it has been widely accepted in wind industry the power converter should be robust, and have good capability of fault tolerance. Meanwhile, the fault-tolerant methods need to be cost-effective and easy to implement. Fault tolerance control in power converter usually contains the following steps, i.e., fault detection and diagnosis, fault isolation, reconfiguration. The sensor for fault tolerance also needs to be taken into account. There are several types of faults in power converter, e.g., open-switch of IGBT, short-switch of IGBT, DC-link fault. This paper gives an overview of different fault-tolerant methods for power converter of wind turbines, by analysing these methods in detail. We finally conclude some interesting areas for future research.
Keywords :
fault diagnosis; fault tolerance; power convertors; power generation faults; power generation reliability; power grids; wind power plants; wind turbines; DC-link fault; IGBT; active power; back to back power converters; doubly fed induction generator; fault detection; fault diagnosis; fault isolation; fault tolerance control; fault-tolerant methods; open-switch; power converter malfunction; power grid; reactive power; sensor; short-switch; speed control; synchronous generator; torque control; variable speed generator configurations; variable speed wind turbines; wind industry; wind turbine power converter; Wind turbine; fault detection and diagnosis; fault tolerance; power converter; topology;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Renewable Power Generation Conference (RPG 2013), 2nd IET
Conference_Location :
Beijing
Electronic_ISBN :
978-1-84919-758-8
Type :
conf
DOI :
10.1049/cp.2013.1831
Filename :
6718742
Link To Document :
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