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.
关键词
双馈感应发电机/直接功率控制/超螺旋滑模控制/定子磁场定向
Key words
doubly-fed induction generator/direct power control/super twisting sliding mode control/stator field oriented
维普
万方数据