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Comparative Study of Nonlinear Black-Box Modeling for Power Electronics Converters

by Liang Qiao, Yaosuo Xue, Yonghao Gui, Wei Du, Fei Wang
Publication Type
Conference Paper
Book Title
2023 IEEE Energy Conversion Congress and Exposition (ECCE)
Publication Date
Page Numbers
1446 to 1452
Publisher Location
New Jersey, United States of America
Conference Name
14th IEEE Energy Conversion Congress and Exposition (ECCE 2023)
Conference Location
Nashville, Tennessee, United States of America
Conference Sponsor
IEEE Power Electronics Society
Conference Date

With the increasing penetration level of renewable sources and power electronics loads in modern power systems, accurate and computationally efficient models are needed. Black-box model (BBM) could be a useful method in such systems. However, not very extensive research efforts have been made for power electronics BBM so far, and existing works mostly focus on steady-state operation, neglecting the important transient behaviors such as load transients, voltage transients, and faults. This paper presents a comparative study of three commonly used nonlinear BBM approaches for transient behaviors of power electronics converters. Comparison methods are proposed, and the evaluations are conducted under different transients using a grid-connected single-phase photovoltaic inverter. The findings of this study provide valuable references for further feasibility investigations on implementing BBMs in large-scale power electronics-rich power systems.