Micro grid control strategy of DFIG unit based on improved DC grid connected topology

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Xia, Zongze^1 ; Xia, Fei^1 ; Yang, Zhixiong^2

State Grid Liaoyang Electric Power Supply Company, Liaoyang

111000, China^1

Kunming Institute of Physics, Kunming

650223, China^2

关键词: Decoupled control;    Doubly fed induction generator (DFIG);    Independent control;    Point of common coupling;    Rotor side converter (RSC);    Stator voltages;    Variable speed constant frequency;    Voltage variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012026/pdf
DOI  :  10.1088/1757-899X/199/1/012026

来源: IOP

【 摘 要 】

Aiming to the application of the DFIG connected to DC-Microgrids, an improved topology for the DFIG connected to DC-Microgrids is taken into account in this thesis. The stator side loses the support of voltage and frequency of AC point of common coupling bus. A novel control method suitable to the stator side converter (SSC) and the rotor side converter (RSC) of the topology is proposed. The independent control of stator voltage and frequency, the decoupled control of power and variable speed constant frequency of DFIG are achieved in the doubly-fed induction generator connected to DC-Microgrids. which can enhance the capacity of active power transmission of DFIG during the voltage variation.