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Harmonic distortion mitigation for multiple modes charging station via optimum passive filter design

机译：通过优化无源滤波器设计减轻多模式充电站的谐波失真

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摘要

Integration of charging station gives negative impact to the distribution system such as power loss and voltage profile. This is due to harmonic produced from non-linear load of electrical vehicle (EV) charging station (CS). Thus, this paper proposes a suitable design for passive filter to reduce the harmonic distortion due to EV CS at all levels. The main advantages of passive filter are due to the simplicity, economical cost and high reliability in power system. Passive filter provides a low impedance path for harmonic current. These currents are then eliminated from the EV CS and make the distribution system clean from damaging of harmonics current. Thus, this research focusing on the analysis of the effect on different charging categories (slow, medium, and high). The different mode of CS can be obtained by varying the value of pulse width in pulse generator at this buck converter. Next, the suitable universal design for passive filter that can be used to all types of CS is determined to reduce harmonic distortion. All the circuits are design, simulate and analyses by using MATLAB/Simulink. From the result, it is proved that the installation of single tuned passive filter at 5th order and 7th order can reduce both THDv (2.94%-5.26%) and THDi (4.83%-9.11%). The results also fulfilled the recommendation of IEEE 519 power harmonic standard.
机译：充电站的集成对电源损耗和电压曲线等分配系统产生负面影响。这是由于从电动车辆（EV）充电站（CS）的非线性负荷产生的谐波。因此，本文提出了一种用于无源滤波器的合适设计，以降低各级EV CS引起的谐波失真。无源滤波器的主要优点是由于电力系统的简单性，经济成本和高可靠性。无源滤波器为谐波电流提供低阻抗路径。然后从EV CS消除这些电流，并使分配系统损坏谐波电流。因此，这项研究侧重于分析不同充电类别（慢，中等和高）的影响。通过在该降压转换器处改变脉冲发生器中的脉冲宽度的值，可以获得不同模式的CS。接下来，确定可以用于所有类型的CS的被动滤波器的合适通用设计以减少谐波失真。所有电路都是通过使用MATLAB / SIMULINK设计，模拟和分析。从结果中，证明了在第5顺序和第7顺序安装单个调谐无源滤波器可以减少THDV（2.94％-5.26％）和THDI（4.83％-9.11％）。结果还满足了IEEE 519电力谐波标准的推荐。

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