CAJ | 학술논문

文章针对兆瓦级永磁同步风力发电直驱系统的应用,提出了一种基于定子电流定向的永磁同步风力发电机复合矢量控制策略;该策略在发电机切入速度与转折速度间采用最大转矩电流比控制方式提高系统的发电功率,在转折速度至极限速度间,采用最大功率输出的弱磁控制方式提高系统的稳定性;根据实时检测的发电机运行状况,2种控制策略实现相互转换,应用所提方案于兆瓦级永磁同步风力发电机的控制系统,通过仿真和实验验证所提方案的正确性和可行性.
문장침대조와급영자동보풍력발전직구계통적응용,제출료일충기우정자전류정향적영자동보풍력발전궤복합시량공제책략;해책략재발전궤절입속도여전절속도간채용최대전구전류비공제방식제고계통적발전공솔,재전절속도지겁한속도간,채용최대공솔수출적약자공제방식제고계통적은정성;근거실시검측적발전궤운행상황,2충공제책략실현상호전환,응용소제방안우조와급영자동보풍력발전궤적공제계통,통과방진화실험험증소제방안적정학성화가행성.
Aimed at the application of MW level direct-drive wind power generating system, one permanent magnet synchronous generator (PMSG) compound vector control scheme based on stator current orientation is proposed in this paper. Between the cut-in speed and turning speed of generator, the scheme adopts the maximum ratio of torque to current control mode to advance the system generating power, and uses the flux-weakening control of maximum power output between the turning speed and limiting speed, to improve the system stability. According to the real time monitoring generator operating status, two control strategies mentioned above can transform each other. Accuracy and feasibility of the proposed scheme used in the MW level PMSG control system have been proved by the simulation and experiment.