Modified DFIG Convertor Control Strategy for High Voltage Ride Through
            
                编号:295
                访问权限:仅限参会人
                                    更新:2021-12-03 10:58:18                浏览:921次
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                摘要
                Currently, wind power penetration is increased, and chain failures caused by DC blocking expose wind turbines to greater risk of high voltage ride-through (HVRT). In this paper, a modified HVRT strategy for rotor-side and grid-side converter of doubly-fed induction generator (DFIGs) is proposed. A reactive power control strategy based on voltage bias is proposed for the grid-side converter (GSC) to maintain the DC-link voltage. To support the recovery of grid voltage, a modified control strategy for DFIG’s rotor side converter is proposed. A model of the grid-connected wind farm is built in MATLAB/Simulink to test the feasibility of the proposed method. Without adding additional hardware, the proposed strategy can ensure that the DC-link voltage does not exceed the limit during HVRT process of the wind turbine, and DFIG can absorb a certain amount of inductive reactive power to support the grid voltage recovery, which improves the high voltage ride-through capability of DFIG under various operating conditions. 
 
             
            
                关键词
                wind turbine; high voltage ride-through; control strategy; reactive power support
             
            
            
                    稿件作者
                    
                        
                                    
                                        
                                                                            
                                    Yi Wang
                                    North China Electric Power University; China; Beijing; Changping District
                                
                                    
                                                                                                                        
                                    Xu Zhang
                                    North China Electric Power University
                                
                                    
                                                                                                                        
                                    Bowen Liu
                                    North China Electric Power University
                                
                                             
                          
    
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