矩阵式变换器励磁的双馈风力发电机系统

DOUBLY-FED WIND-POWER GENERATION SYSTEM EXCITED BY A MATRIX CONVERTER

该文建立了基于双馈电机的变速恒频风力发电系统模型。该系统采用矩阵式变换器作为交流励磁电源 ,利用定子磁场定向的矢量变换控制实现有功功率和无功功率的独立调节 ,采用最佳风能控制策略 ,使系统能够在不同风速下跟踪最大风能曲线 ,实现风能的有效利用。仿真结果展现了系统的优良特性 。

A Variable-Speed Constant-Frequency (VSCF) wind power generation system based on Doubly-Fed Induction Generator is presented to capture optimum wind energy sand improve the generated electricity quality. Excited by matrix converter, the system enables the generator capturing maximum energy from wind by tracking optimal wind curve and permits active and reactive power regulating independently by applying stator flux-oriented vector control. Good performance of the system was obtained from simulation which demonstrates the correctness and availability of the scheme presented in this paper.