The Research On State Cognitive Control Method Of Wind Turbine Based On Artificial Immune Mechanism

As a renewable clean energy,the wind energy was concerned for its advantages of large quantity,wide distribution and non-polluting.How to ensure the safety operation of the wind turbine and maximize the power generation in the random,intermittent and non-linear environment has become one of the research topics.The small and medium-sized wind turbine was the research object in this thesis,to achieve the safety and stable operation of wind turbine,the method of wind turbine state cognitive control based on artificial immune mechanism was adopted,and environmental status monitoring technology and intelligent control technology were then combined.The thesis mainly has done the following research work:1.A mathematical model of the wind turbine key components was build.Based on the analysis of wind wheel system,generator system and yaw system structure and working principle,the mathematical model of wind wheel system,generator system and yaw system of wind turbine were constructed.2.A method of wind turbine state cognition control based on artificial immune mechanism was discussed.Firstly,the state of the process of the wind turbine was analyzed,and the type of the wind turbine generator type library was established,that is the antigen library of the artificial immune mechanism.Secondly,according to the mapping of the antibody library to the antigen library,the corresponding wind turbine state control strategy library was established,That is the artificial immune mechanism of the antibody library;Finally,based on the artificial immune mechanism of the method,the state of the wind turbine was cognized and controlled by itself.3.The validity of the method proposed by this thesis was tested.An simulation experiment was built according the technical parameters and functional requirements of 10 kW wind turbines.The experimental results show the stability and robustness of wind turbine yaw control process.4.Design the wind turbine state cognitive control system.The system of whole frame structure,soft control process,host computer function,and hardware component module were designed.The soft control process consists of overall function flow chart,data acquisition flow chart and data communication flow chart,hardware component module consists of the ATmega128 microprocessor circuit,signal acquisition circuit,signal conditioning circuit and data communication circuit.