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首页> 外文期刊>Power Electronics, IET >Hybrid inductive and active filtering method for damping harmonic resonance in distribution network with non-linear loads
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Hybrid inductive and active filtering method for damping harmonic resonance in distribution network with non-linear loads

机译：非线性负载配电网中阻尼谐波谐振的感应和有源混合滤波方法

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摘要

In this study, a hybrid inductive and active filtering (HIAF) method is proposed to dampen the harmonic resonance in distribution network with non-linear loads. At a first, a new topology of energy conversion system with active technique, which includes an inductively filtered converter transformer, fully-tuned branches and a controlled voltage source inverter (VSI), is proposed for large-power non-linear loads. The working principle of such a new topology is described, and the advantage of damping harmonic resonance of the distribution network is revealed by means of mathematical modelling and theoretical analysis. Then, the control system of VSI is designed with the multiple purposes of damping harmonic resonance from the grid side and isolating harmonic currents from the non-linear load side. A case study is carried out to validate theoretical results. By comparing with the traditional hybrid active filtering method and the passive filtering method, it indicates that the proposed HIAF method is more effective to dampen harmonic resonance in the distribution network and at the same time is able to significantly reduce the harmonic contents in the grid winding, which is good to both the public network and the energy conversion system connected with large-power non-linear loads.
机译：在这项研究中，提出了一种混合感应和主动滤波（HIAF）方法，以抑制非线性负载下配电网的谐波谐振。首先，针对大功率非线性负载，提出了一种采用主动技术的能量转换系统的新拓扑，该拓扑包括一个电感滤波的转换器变压器，全调谐支路和一个受控电压源逆变器（VSI）。描述了这种新拓扑的工作原理，并通过数学建模和理论分析揭示了阻尼配电网谐波谐振的优势。然后，设计VSI的控制系统，其目的是从电网侧衰减谐波谐振并从非线性负载侧隔离谐波电流。进行了案例研究以验证理论结果。通过与传统的混合有源滤波方法和无源滤波方法进行比较，表明所提出的HIAF方法在抑制配电网谐波谐振方面更为有效，同时能够显着降低电网绕组中的谐波含量。 ，这对于连接大功率非线性负载的公共网络和能量转换系统都是有利的。

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