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快速且谐波不敏感的电网电压同步方法

DOI: 10.13334/j.0258-8013.pcsee.2015.09.012, PP. 2194-2201

Keywords: 电力谐波,有限冲激响应滤波器,卡尔曼滤波器,数字锁相环

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Abstract:

电网电压存在谐波且发生诸如对称和不对称等故障时,由于常规的电压基波提取方法速度较慢,可能会影响到电力电子设备的安全运行。针对上述问题,该文提出一种快速且谐波不敏感的方法,利用复有限冲激响应滤波器组将主要谐波与基波分离,并利用自适应卡尔曼滤波器获得基波分量。仿真和实验证明所提出的方法在快速性、准确性、灵活性、稳定性等方面都有较突出的表现。

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