A Novel Filter With High Harmonics Attenuation and Small Dimension for Grid-Connected Inverter
A Novel Filter With High Harmonics Attenuation and Small Dimension for Grid-Connected Inverter
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DOI：
10.1109/tpel.2022.3207432
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发表时间：
2023-02
影响因子：
6.7
通讯作者：
K. Koiwa;Harutaka Takahashi;T. Zanma;Kang Liu;K. Natori;Yukihiko Sato
中科院分区：
文献类型：
--
作者：
K. Koiwa;Harutaka Takahashi;T. Zanma;Kang Liu;K. Natori;Yukihiko Sato
无源电力滤波器是并网逆变器（GCI）消除电流谐波不可或缺的部分。然而，典型的滤波器需要较大的电感，这不仅增加了滤波器的尺寸和成本，而且导致滤波器上的电流响应较慢和电压降较高。本文提出了一种新型的滤波器LCTCL滤波器，它可以有效地衰减谐波与小电感。此外，本文提出了一种控制器综合的GCI与LCTCL滤波器没有额外的电阻。我们通过仿真和实验与典型滤波器进行比较分析，证明了所提出的LCTCL滤波器的有效性。我们澄清，建议LCTCL滤波器具有优良的功能，在滤波器的尺寸，频率特性，参数变化的鲁棒性，谐波抑制，和总谐波失真。
Passive power filters are indispensable for grid-connected inverters (GCIs) to eliminate current harmonics. However, typical filters require large inductance, which not only increases the filter dimension and costs but also leads to slower current response and a high voltage drop across the filter. This article proposes a novel filter called LCTCL filter, which effectively attenuates harmonics with small inductance. In addition, this article presents a controller synthesis to the GCI with LCTCL filter without an additional resistor. We demonstrate the effectiveness of the proposed LCTCL filter through comparative analysis with typical filters via simulations and experiments. We clarify that the proposed LCTCL filter has excellent features in terms of filter dimension, frequency characteristics, robustness for parameter variations, harmonic suppression, and total harmonic distortion.