链式配电静止同步补偿器（DSTATCOM ）采用比例积分（PI）与重复控制相结合的复合控制策略。为了消除装置动态性能和稳定性不佳的影响，设计误差调节器。在指令切换的动态过程中，利用滞环和衰减器，根据无功轴电流误差幅值对重复控制器输入信号进行快速调节，减小重复控制延时对PI前馈通路的影响。稳态时误差调节器不响应，保证稳态补偿精度，从而在保证稳定性的前提下提高复合控制器的动态性能。通过仿真和实验分析验证了误差调节器在提高复合控制器动态响应方面的有效性。%Cascaded distribution static synchronous compensator (DSTATCOM ) is controlled by the combination of proportional‐integral (PI ) and repetitive control strategy . An error regulator was introduced to eliminat the effects of its bad dynamic and stability performance .In the dynamic process of instruction‐switching ,the input signal of repetitive controller was dynamically regulated by hysteresis and attenuator according to the current amplitude error of reactive axis ,to reduce the influence of repetitive controller on PI feedforward path .When in a steady state ,error regulator didn’t response to ensure the static compensation accuracy . Thus the dynamic performace of the composite controller was improved under the premise of making sure stability .Simulation and experimental results verified the feasibility of the error regulator in improving the controller ’s dynamic response .
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