Abstract
Current control has been widely used in the past few years because of its unique advantages in power system stability analysis. The dynamic performance of four current control strategies based on doubly-fed wind turbine model is analyzed and compared. Firstly, the mathematical model of doubly-fed generator is established. From the basic mathematical model of doubly-fed generator, the relationship between rotor current, rotor voltage and flux linkage is deduced. On this basis, the current control strategy models of PI, PI-R, IP and adaptive control are established. Secondly, the rotor side converter controller of 1.5MW DFIG wind power generation system is constructed in MATLAB/ SIMULINK. Finally, the simulation results analyze the influence of four control strategy models on the dynamic performance of doubly-fed wind power generation system, and the results show that PI-R control has good dynamic performance compared with other control strategies.
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