【摘要】 通过坐标变换推导出双馈感应发电机在正、负序坐标系下的电压方程和磁链方程,建立了正、负序坐标系下基于定子正、负序磁链定向的并网型双馈感应发电机数学模型.分别给出负序控制系统4类不同控制目标时转子负序电流指令值,得到适应于电网电压不平衡的双馈感应发电机在正、负序坐标下的励磁矢量控制策略.更多还原

【Abstract】 The voltage and flux equations of the doubly fed induction generator(DFIG) under the positive and negative rotary coordinates are deduced by using the coordinate conversion matrixes.By orienting the positive and negative components of stator flux at the same time,a mathematical model of grid-connecting DFIG under the positive and negative rotary coordinates is built.The control targets of negative control system are classified into four kinds;and a DFIG exctitation vector control strategy suitable for the condition of unbalanced grid voltage is put forward.更多还原