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基于混合预测策略的改进型并联有源电力滤波器无差拍控制

DOI: 10.13195/j.kzyjc.2013.0735, PP. 991-996

Keywords: 混合预测策略,改进的无差拍控制,自适应前向线性预测

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Abstract:

针对传统的无差拍电流跟踪控制受时延影响实际上是差一拍控制,提出一种改进的无差拍控制.该方法提前两个采样周期预测出有源电力滤波器(APF)指令电流,提前一个采样周期预测出逆变器输出电流,从而实现真正意义上的无差拍控制.同时,提出一种综合考虑负载谐波电流稳态和动态过程的混合预测策略,使上述预测过程更加准确、快速.仿真实验结果表明,基于该方法的APF在负载稳态和变化时均具有良好的补偿效果.

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