Research On Modeling And Controller Parameter Optimization Of Double-fed Wind Turbine

With the development of forestry intelligence,the forest area needs more reliable and abundant power energy as backup protection.The new forest area microgrid structure has attracted more and more attention of scholars.Wind power generation is often used as the main power source in the forest area microgrid.The research of wind power generation system modeling and grid-connected control systems will directly affect whether wind turbines can be widely used in microgrid systems.This paper first discusses the modeling method of doubly-fed wind generators and mathematical modeling of wind turbines,generators and grid-connected converters in doubly-fed wind power generation systems.Then,the vector control strategy of stator-side flux orientation and grid-side grid voltage orientation of fan-connected dual PWM converters is given.Aiming at the difficulty of parameter tuning and optimization for a large number of PI controllers in control systems,a comprehensive consideration is proposed.PI stability tuning algorithm for system stability and responsiveness.Finally,based on PSCAD/EMTDC software platform to build a 5MW double-fed wind power system model,the controller parameters after the tuning into the PI controller in the control system,through the output waveform to verify the effectiveness of the setting algorithm.After simulation experiments,the effectiveness of the parameter tuning optimization algorithm was verified.The output waveform of the double-fed fan system is stable,the output power quality is improved,and the system stability and response are good.