DIRECT POWER CONTROL OF DOUBLE-FED INDUCTION GENERATOR BASED ON IMPROVED SUPER-TWISTING

A improved Super-twistingl sliding mode（STSMC）direct power control（DPC）is presented to improve the robustness and immunity to interference of the direct power control of a Doubly-fed induction generator（DFIG）. Firstly，the Doubly-fed induction generator model with stator field orientation and the DFIG maximum power capture model under parametric regimes are created；Following that，the Non-singular fast terminal sliding mode surface（NFTSM）and an enhanced Super-twisting optimization method are combined to create the DFIG direct power controller（IST-NFTSMC）. They include the developed Non-singular sliding mode surface，which can successfully avoid the singularity phenomena of conventional sliding mode control（SMC），and the improved Super-twisting control law，which can successfully reduce the jitter of the NFTSMC and increase the accuracy of the power control；Finally，through simulation and experiment，it is found that compared to the PI control and the conventional sliding mode control，the IST-NFTSMC may reduce the DFIG power and current jitter problem，speed up its convergence，and increase the steady state accuracy of the DFIG direct power management through simulation and experimentation. © 2024 Science Press. All rights reserved.