Transient Power Decoupling of 3-level Flying Capacitor Buck Converter: Removing Negative Input-resistance for Extended Frequency Range
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Date
2025
Publication Type
Conference Paper
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yes
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Abstract
By using the flying capacitor as a transient energy buffer, an effective active damping (AD) of the input-filter of 3-level flying capacitor buck converters (FCBCs) can be achieved. The proposed AD for FCBCs can remove the typical negative input-resistance behavior of buck converters in an extended frequency range and improve the stability of DC systems. Furthermore, the proposed AD enables the design of compact input filters without additional damping circuits. Simulation results are presented to validate the control performance and the input impedance characteristics enabled by the proposed controller.
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Publication status
published
Editor
Book title
2025 10th IEEE Workshop on the Electronic Grid (eGRID)
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Volume
Pages / Article No.
11255586
Publisher
IEEE
Event
10th IEEE Workshop on the Electronic Grid (eGRID 2025)
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Methods
Software
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Subject
Active damping; DC-distribution system; Input impedances; Small-signal stability; Large-signal stability
Organisational unit
03889 - Biela, Jürgen / Biela, Jürgen