用三相功率变换器估计不平衡电网阻抗

2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe) Pub Date : 2020-09-01 DOI:10.23919/EPE20ECCEEurope43536.2020.9215676

Jarno Kukkola, Ville Pirsto, M. Routimo, M. Hinkkanen

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引用次数: 0

摘要

本文提出了一种利用三相变换器实时估计电网不平衡阻抗的方法。在该方法中，在变换器基准电压中加入周期性的单频或多频激励信号。转换器测量公共耦合点的电流和电压。利用滑动离散傅里叶变换(SDFT)对测量结果进行阻抗估计。实验验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Estimation of an Unbalanced Grid Impedance Using a Three-Phase Power Converter

This paper proposes a real-time method for estimating an unbalanced grid impedance using a three-phase converter. In the method, a periodic single-frequency or multi-frequency excitation signal is added to the converter voltage reference. The converter measures currents and voltages at the point of common coupling. The impedance estimate is obtained from the measurements using sliding discrete Fourier transform (SDFT). The method is experimentally validated.

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来源期刊

2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)

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