【摘要】 为了在不对称电网故障穿越第2阶段内,维持双馈感应发电机(doubly-fed induction generator,DFIG)风电机组自身不脱网安全运行的同时满足并网导则无功支撑的要求,该文首先确定了转子侧变流器(rotor side converter,RSC)的控制目标及其电流限制条件下的控制优先级,进而设计了RSC相应的电流指令值算法。最后,基于3 kW的DFIG风电实验平台对所提出的不对称电网故障穿越第2阶段内RSC电流指令值算法的有效性进行了实验验证。更多还原

【Abstract】 Safe grid-connected operation of doubly-fed induction generator( DFIG) based wind turbines during the second period of asymmetrical grid fault ride-through while assuring that the reactive power support requirement of the grid is met requires proper control objectives for the rotor side converter( RSC) and proper control priorities for the converter for its current constraints. An RSC current reference calculation algorithm was designed to meet these requirements. Tests on a 3 kW DFIG test platform showed the effectiveness of the RSC current reference calculation algorithm during the second period of asymmetrical grid fault ride-through.更多还原