Wind power generation T-S fuzzy robust scheduling fault-tolerant control method

A fault-tolerant control and fault-tolerant controller technology, applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of insufficient guarantee of robust stability and failure to consider the uncertain part of the system, etc., to achieve good Steady-state and dynamic performance, well-designed effects

Inactive Publication Date: 2019-12-13
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Benefits of technology

This patented technology suggests that it can be used to improve the stability or reliability of an electricity generation device by controlling its parameters accurately without experiencing any failures during operation. By estimating and reconstructing certain states within this complex system, we aimed towards ensuring stable operations even if there were some small errors happening over time.

Problems solved by technology

The technical problem addressed in this patents relates to improving the security and reliancy of wind turbine generators used at different locations around the world due to their potential catastrophic consequences caused by weather or natural events like severe snowfall.

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  • Wind power generation T-S fuzzy robust scheduling fault-tolerant control method
  • Wind power generation T-S fuzzy robust scheduling fault-tolerant control method
  • Wind power generation T-S fuzzy robust scheduling fault-tolerant control method

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Embodiment Construction

[0030] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] The design concept of the present invention is: the present invention designs the fuzzy robust scheduling fault-tolerant control strategy (FRSFTC) based on the T-S fuzzy model, which takes into account the unmeasurable state variables and uncertainties in the system, based on the system T-S fuzzy model, through fuzzy The observer can effectively estimate the state of the system, and design a fuzzy PI observer for the actuator fault of the system to realize the accurate reconstruction of the fault signal. According to the estimated fault information, the compensation control is adopted, and the parallel distributed compensation (PDC) is used. Methods A fuzzy scheduling fault-tolerant controller is constructed to realize the active fault tolerance to actuator faults and ensure the robustness and stability of the system.

[0032] A wind pow...

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Abstract

The invention relates to a wind power generation T-S fuzzy robust scheduling fault-tolerant control method. The method is technologically characterized in that a T-S fuzzy model of a parameter uncertainty nonlinear system for fault of an actuator is established; based on the nonlinear T-S fuzzy model, a fuzzy special observer is adopted to effectively estimate a system state, a fuzzy proportionalintegral observer is constructed for the uncertainty, the unmeasurable state and the actuator fault of the system, and the fuzzy proportional integral observer is used for accurate reconstruction of fault signals, then a fuzzy scheduling fault-tolerant controller based on observer fault reconstruction is constructed by utilizing a parallel distribution compensation method; and wind power generation T-S fuzzy robust scheduling fault-tolerant control is carried out through the fuzzy scheduling fault-tolerant controller based on the observer fault reconstruction. The method has the advantages that the design is reasonable, by establishing a mathematical model of the nonlinear T-S fuzzy robust scheduling fault-tolerant control method under the influence of the fault of the actuator, the function of wind power generation T-S fuzzy robust scheduling fault-tolerant control is realized, and the method has good steady-state and dynamic performance.

Description

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Claims

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Application Information

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Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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