Stability Region Exploring of Shunt Active Power Filters Based on Output Admittance Modeling

Journal article (2021)

Authors

Jintao Lei Zhejiang University

Z. Qin DC systems, Energy conversion & Storage -

Wuhua Li Zhejiang University

P. Bauer DC systems, Energy conversion & Storage -

Xiangning He Zhejiang University

Research Group

DC systems, Energy conversion & Storage () (TU Delft)

DOI: https://doi.org/10.1109/TIE.2020.3044750

Modeling Stability Thermal stability Admittance Impedance Admittance Load modeling Harmonic analysis Power system stability Power harmonic filters Active power filters Active power filters

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http://resolver.tudelft.nl/uuid:d382bbdd-4718-406a-89eb-bd6b76d7cdde

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Published Date

2021

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

A shunt active power filter (SAPF) is coupled with load admittance in weak grid conditions, which poses a challenge to stability analysis. In this article, the admittance model of the SAPF is developed, which reveals the coupling mechanism between SAPF and load concisely and accurately. On top of that, the stability region of the system is investigated. The passivity region of the load admittance to guarantee the system stability is first explored. However, the passivity region has a very narrowband at a specific frequency, which makes it difficult to achieve. The stability region is then studied and it turns out to be an extension of the passivity region, and especially the narrowband is expanded. Therefore, the stability region is much easier to meet. The stability-oriented design is then summarized in a flowchart. In the end, the effectiveness of the newly defined stability region is verified by experimental results.

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