描述
整个控制策略使用双闭环控制结构,外环为电压环,内环为电流环。电压环给定值i*dc与直流母线电压udc进行比较,经过pi调节器调节,给出d轴电流给定量i*d。q轴电流给定量i*d由需要的功率因数决定,一般都需要单位功率因数输出,则i*d给定为0。i*d、i*q与实际电流的dq轴分量进行比较,误差经pi调节器调节后输出ud、uq,再与各自的解耦补偿项δud、δuq和电网电压扰动前馈补偿项ed、eq运算后得到网侧变流器参考电压给定值u*d、u*q,再经过坐标变换得到两相静止坐标αβ轴系下的电压分量u*α、u*β,最后送入svpwm发生器给出网侧变流器各开关器件的驱动信号。
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