Article, 2024

A Virtual Impedance-Based Active Damping Control Strategy for Triple Active Bridge Converter

IEEE Transactions on Industrial Electronics, ISSN 1557-9948, 0278-0046, Volume PP, 99, Pages 1-12, 10.1109/tie.2024.3371006

Contributors

Yu, Haoyuan [1] Zhang, Hanwen [1] Zhang, Qi [1] Wang, Yanbo [1] Qin, Zian [2] Chen, Zhe [1] Bauer, Pavol [2]

Affiliations

  1. [1] Aalborg University
  2. [NORA names: AAU Aalborg University; University; Denmark; Europe, EU; Nordic; OECD];
  3. [2] Delft University of Technology
  4. [NORA names: Netherlands; Europe, EU; OECD]

Abstract

Multiport dc–dc converters have been intensively concerned and studied in power electronics-based systems. However, the instability issue and its suppression method are rarely discussed. This article investigates the stability of the triple active bridge (TAB) converter with two constant power loads by impedance-based method, where the output impedance of the TAB converter is derived by the extra element theorem. Then, a virtual impedance-based active damping (AD) control is proposed, where the virtual impedance has four different positions at the output capacitor of the dc port. The effect of the proposed AD control on output impedance and system dynamic response is analyzed. Meanwhile, the range of the virtual impedance is specified. Simulation is performed in PLECS and experimental tests are conducted on a scale-down TAB prototype to verify the effectiveness of the proposed AD control.

Keywords

AD control, DC port, DC-DC converter, PLECS, TAB converter, Virtual, active damping, active damping control strategy, article, bridge converter, capacitor, constant power loads, control, control strategy, converter, damping, damping control strategy, dynamic response, effect, experimental tests, extra element theorem, impedance, impedance-based method, instability, instability issues, issues, load, method, multiport, multiport DC-DC converter, output, output capacitor, output impedance, port, position, power, power electronics-based systems, power load, prototype, response, simulation, stability, strategies, suppression, suppression method, system, system dynamic response, tabs, test, theorem, triple active bridge (TAB, triple active bridge converter, triples, virtual impedance

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