Chaotic Characteristics Analysis of Doubly-Fed Wind Power Systems Based on Lyapunov Exponents

In order to study the chaotic behavior of wind power generation system, the nonlinear equation of doubly-fed wind power generation system is established by taking doubly-fed wind power generation system as an example and considering the influence of wind speed; the Lyapunov exponent is calculated firstly by taking the in-loop control parameter of the converter current as the control quantity of the system to validate the existence of chaotic motion in doubly-fed wind power generation system, and to analyze the parameter ranges corresponding to the emergence of chaotic motion of the system; and finally to study the influence of the change of wind speed on the chaotic characteristics, the effect of wind speed variation on the chaotic characteristics of doubly-fed wind power system is investigated.