一种具有低电压穿越能力和改进动态性能的III型风能转换系统新型智能功率控制技术

This paper presents a novel neuro-fuzzy (NF) based intelligent power control (IPC) technique for a Type-3 wind energy conversion system (WECS), which can achieve low voltage ride through (LVRT) capability by managing grid side disturbance of WECS. The proposed IPC technique considers the errors between command and actual values of real and reactive powers of the stator as inputs and processes these inputs through two NF networks to generate d-q axis switching signals for the switches of rotor side converters (RSCs). Additionally, a hybrid training method is developed to train the NF system parameters. The performance of the proposed control technique is tested in simulation under different grid disturbance and wind speed variations. Furthermore, a comparative study of performances is conducted between the proposed and the classical proportional-integral control technique at different operating conditions. Additionally, the stability of WECS and the effectiveness of the NF networks are investigated in this study. Furthermore, a laboratory prototype of Type-3 WECS is also built to test the performance of the proposed IPC technique in real-time using the DSP controller board DS-1104. Both the simulation and experimental results verify the LVRT capability of the IPC technique as well as its superior dynamic response with variations in wind speed.