Partially Rated Power Flow Control Converter Modeling for Low Voltage DC Grids

Journal Article (2019)
Author(s)

Pavel Purgat (TU Delft - DC systems, Energy conversion & Storage)

NH van der Blij (TU Delft - DC systems, Energy conversion & Storage)

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

Pavol Bauer (TU Delft - DC systems, Energy conversion & Storage)

Research Group
DC systems, Energy conversion & Storage
Copyright
© 2019 P. Purgat, N.H. van der Blij, Z. Qin, P. Bauer
DOI related publication
https://doi.org/10.1109/JESTPE.2019.2915166
More Info
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Publication Year
2019
Language
English
Copyright
© 2019 P. Purgat, N.H. van der Blij, Z. Qin, P. Bauer
Research Group
DC systems, Energy conversion & Storage
Issue number
3
Volume number
8
Pages (from-to)
2430-2444
Reuse Rights

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Abstract

Scalable and robust low-voltage direct current (LVdc) distribution networks require solutions, allowing flexible power flow control and reliable short-circuit protection. In this paper, the continuous full-order large-and small-signal models of a partially rated power flow control converter (PFCC) are derived utilizing the generalized averaging method. The large-signal model of the PFCC is coupled with a model of the LVdc grid. Due to the state-space representation, the combined model of the PFCC and the LVdc grid is suitable for easy algorithmization, and efficient simulation. These advantages make them essential tools for studying and optimizing of scalable LVdc systems with decentralized power flow control based on the PFCC. The PFCC models provide insights into controller design and stability analysis. The models are experimentally validated, and the functionality of the PFCC is demonstrated in a laboratory-scale microgrid.

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