双馈风力发电系统双PWM变流器控制策略  

Control strategy of dual-PWM converter for doubly-fed wind power generation system

作　　者：李瑾[1] 杨小品[1] LI Jin;YANG Xiao-pin(Nanchang Institute of Technology,Nanchang 330099 China)

机构地区：[1]南昌工程学院电气工程学院,江西南昌330099

出　　处：《新余学院学报》2021年第5期1-5,共5页Journal of Xinyu University

基　　金：国家自然科学基金项目“风机组润滑动态建模与控制技术的研究”(51567018)。

摘　　要：建立了两相同步旋转坐标系下网侧变流器的数学模型,其网侧变流器选择电网电压定向矢量控制策略并采用电压外环电流内环的双闭环结构,转子侧变流器采用定子磁链定向的矢量控制策略。仿真实验结果表明,该控制策略可实现变流器工作状态变化时直流母线电压、网侧电流和转子电流的稳定以及单位功率因数运行,且能通过产生相反负序电流分量来消除电网电压的不平衡,从而证明了该控制策略的正确性和有效性。A mathematical model of grid side converter was established in 2-phase rotating coordinate system in this paper.The grid side converter chose grid voltage oriented vector control strategy and adopted dual-close-loop control using current inner loop and voltage outer loop.The rotor side converter adopted stator flux oriented vector control strategy.The simulation experiment results demonstrated that the control strategy can ensure the stability of DC bus voltage,grid side current and rotor current and the unit power factor operation and can eliminate the unbalance of the grid voltage by generating reverse negative sequence current components,verifying the correctness and validity of the control strategy.

关 键 词：变速恒频 风力发电 双PWM变流器 矢量控制 

分 类 号：TM343[电气工程—电机]