CAJ | 학술논문

在考虑定子电压动态性能的情况下,对变速恒频双馈型风力发电机空载并网及电网故障下运行控制策略进行了深入分析,并仔细推导了各控制器的设计依据.利用电网电压定向的矢量控制及分段改变转子电流的参考值的方法实现该并网控制,其主要目的是降低并网时定子的冲击电流.在稳态运行时,考虑了定子电流动态性能的要求,进一步提高了向电网输入电能的质量和低电压穿越能力.最后对整个并网过程进行了实验研究,结果证明了该控制策略的正确性与有效性.
재고필정자전압동태성능적정황하,대변속항빈쌍궤형풍력발전궤공재병망급전망고장하운행공제책략진행료심입분석,병자세추도료각공제기적설계의거.이용전망전압정향적시량공제급분단개변전자전류적삼고치적방법실현해병망공제,기주요목적시강저병망시정자적충격전류.재은태운행시,고필료정자전류동태성능적요구,진일보제고료향전망수입전능적질량화저전압천월능력.최후대정개병망과정진행료실험연구,결과증명료해공제책략적정학성여유효성.
In condition of considering the dynamic performance of stator voltage,the no-load connected-grid and grid fault control strategy of the VSCF doubly-fed wind generator are analyzed,and the design proofs of the controllers are carefully derived from the mathematical model.The grid voltage-oriented vector control and timely the change of the reference value of rotor current are employed to complete the control strategy.The main purpose of control strategy is to reduce the impact of the stator current.During the steady-state,taking the dynamic properties of stator current into account.The quality of the power into the grid is improved and the low-voltage through capacity is increased.While the simulation and test results have verified the correctness and effectiveness of the control strategy.