Modelling of Output Admittance Coupling Between Shunt Active Power Filters and Non-linear Loads

Conference Paper (2019)
Author(s)

Jintao Lei (TU Delft - DC systems, Energy conversion & Storage)

Zian Qin (TU Delft - DC systems, Energy conversion & Storage)

Wuhua Li (Zhejiang University)

P Bauera (TU Delft - DC systems, Energy conversion & Storage)

Xiangning He (Zhejiang University)

Research Group
DC systems, Energy conversion & Storage
DOI related publication
https://doi.org/10.1109/eGRID48402.2019.9092650
More Info
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Publication Year
2019
Language
English
Research Group
DC systems, Energy conversion & Storage
Pages (from-to)
1-5
ISBN (print)
978-1-7281-5705-4
ISBN (electronic)
978-1-7281-5704-7

Abstract

Nowadays Shunt Active Power Filter (SAPF) system still suffers from stability issue which heavily detect its performance. In this paper, an improved system level model is proposed to investigate the coupling effect that will cause the system level instability. This model describes the coupling effect with an additional output admittance and shows system stability more directly. In order to investigate the correctness of the proposed method, a grid including the SAPF and a non-linear load is modelled with both conventional approach and proposed modeling method. Simulations are carried out with the same parameters. Results show that the instability of the grid current observed in the simulation results is not reflected in the stability analysis based on the conventional model. On the other hand, the stability analysis with the new model matches the simulation results very well. Also, further verification is made by a frequency-sweep result, which proves the accuracy of proposed model.

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