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首页> 外文期刊>Electric power systems research >Black-box identification of grid-side filter circuit for improved modelling of single-phase power electronic devices for harmonic studies
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Black-box identification of grid-side filter circuit for improved modelling of single-phase power electronic devices for harmonic studies

机译：电网侧滤波器电路的黑匣子识别，用于改进单相电力电子设备谐波研究的建模

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摘要

This paper presents an identification methodology for filter circuits of commercially available power electronic devices based on laboratory measurements. The filter circuit is one of the main components with significant impact on the harmonic behaviour, in particular for modern power electronic devices. The generic approach does not require detailed knowledge about the circuit layout and is applicable for all single-phase power electronic devices where a voltage measurement on both sides of the filter circuit is possible. Current measurements on the circuit board, which are usually not practicable, are not required. The model parameters of the filter circuit are represented by two admittances for each considered frequency. The parameter identification is based on the analysis of the frequency couplings of power electronic devices. The proposed method is validated by simulations and exemplarily applied for a commercially available photovoltaic (PV) inverter in the laboratory. The measurement-based parameter identification can also provide more reliable results compared to the white-box simulation of a particular device, as the partly large manufacturing tolerances of the elements are inherently considered in the measurements.
机译：本文介绍了基于实验室测量的市售电力电子设备的滤波器电路的识别方法。滤波器电路是具有对谐波行为影响显着影响的主要部件之一，特别是用于现代电力电子设备。通用方法不需要关于电路布局的详细知识，并且适用于所有单相电力电子设备，其中滤波器电路两侧的电压测量是可能的。电路板上的电流测量通常不可行，不需要。滤波器电路的模型参数由两个频率的两个导入表示。参数识别基于电力电子设备的频率耦合的分析。通过模拟验证所提出的方法，并示例性地应用于实验室中的市售的光伏（PV）逆变器。与特定装置的白盒模拟相比，基于测量的参数识别还可以提供更可靠的结果，因为在测量中固有地考虑元件的部分大的制造公差。

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