Impedance-based Sensitivity Analysis of Dual Active Bridge DC-DC Converter

Yang, Jiajun; Buticchi, Giampaolo; Yan, Hao; Gu, Chunyang; Zhang, He; Wheeler, Pat

doi:10.1109/cpe.2019.8862418

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…is the bandwidth of voltage controller. For a given phase margin θ, it exists The input impedance of DAB converter including the input capacitor has been derived in [22] and shown as (2.10), where C i and C o are the input capacitance and output capacitance, G v,DAB is the transfer function of voltage controller, R load is the load resistance. The G 1 , G 2 , G 3 and G 4 are the small signal gains derived from power equation of DAB converter, given as…”

Section: Impedance Modelingmentioning

confidence: 99%

Modeling and Stability Enhancement of a Permanent Magnet Synchronous Generator Based DC System for More Electric Aircraft

Yang

Yan

et al. 2022

IEEE Trans. Ind. Electron.

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The concept of the More Electric Aircraft (MEA) is aimed at electrifying the mechanical, hydraulic, and pneumatic subsystems on aircraft. With increasing usage of power electronics, the architecture of on-board electrical power distribution systems (EPDS) becomes more complicated. Therefore, it is necessary to analyze the stability of the system. This paper firstly presents and validates an impedance model of a permanent magnet synchronous generator (PMSG) as a source and dual active bridge (DAB) converter as a load. These models are used for the stability analysis of a simple DC power system. In addition, two new control strategies are proposed to enhance the stability of the system. The stabilization effects of the new control strategies are verified with experimental results.

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Section: Impedance Modelingmentioning

confidence: 99%

Modeling and Stability Enhancement of a Permanent Magnet Synchronous Generator Based DC System for More Electric Aircraft

Yang

Yan

et al. 2022

IEEE Trans. Ind. Electron.

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show abstract

“…The input impedance of a DAB converter operating as constant power load has been derived and verified in [8], [13], given as ( 22), where C i and C o are the input capacitance and output capacitance, G v,DAB is the transfer function of the voltage controller, R load is the load resistance and G 1 , G 2 , G 3 and G 4 are the small signal gains.…”

Section: B the Input Impedance Of Dab Convertermentioning

confidence: 99%

Active Rectifier Control for Selective Fuse Tripping in a DC Microgrid

Yang

Buticchi

et al. 2021

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society

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Distributed energy resources and new loads such as fast charging stations for electric vehicles are often dc-based. By using low-voltage dc microgrids to connect such systems to the grid, conversion stages can be omitted and higher efficiencies can be achieved. Challenges exist with respect to the protection of dc microgrids, where dc fuses are a viable solution but selective tripping must be ensured. The grid-forming converter must be able to supply the fault current in the case of a line-to-line short-circuit in a feeder without tripping due to over-current. To avoid expensive over-sizing, this paper proposes to use a virtual resistance in the control of the grid-forming converter to limit its output current. The range of the virtual resistance is discussed for normal grid operation and the effect of the virtual resistance on limiting the bus current during a short-circuit fault is discussed. In addition, the impedance models of the source and load systems are presented. Based on this, the influence of the virtual resistance on the system stability is analyzed. To validate the theoretical part, a switching model is simulated and the results show a good agreement with the theoretical analysis.

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DC–DC Converter and On‐board DC Microgrid Stability

Buticchi

Yang

2022

Transportation Electrification

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Impedance-based Sensitivity Analysis of Dual Active Bridge DC-DC Converter

Cited by 8 publications

References 14 publications

Modeling and Stability Enhancement of a Permanent Magnet Synchronous Generator Based DC System for More Electric Aircraft

Modeling and Stability Enhancement of a Permanent Magnet Synchronous Generator Based DC System for More Electric Aircraft

Active Rectifier Control for Selective Fuse Tripping in a DC Microgrid

DC–DC Converter and On‐board DC Microgrid Stability

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