A DAB-Based DC Transformer for Multiterminal HVdc Dynamic Simulation Platform with Short Circuit Tolerance

Deshang Sha; Xiangshuai Jia; Haipeng Yao; Dong Liu; Huaiguang Gu

doi:10.1109/TPEL.2022.3212469

A DAB-Based DC Transformer for Multiterminal HVdc Dynamic Simulation Platform with Short Circuit Tolerance

Deshang Sha^*, Xiangshuai Jia, Haipeng Yao, Dong Liu, Huaiguang Gu

^*Corresponding author for this work

School of Automation

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The dc transformer (DCT) can be used to achieve a direct connection between various dc bus voltages. A multiwinding dual active bridge (DAB) structure is proposed to be used in that occasion for a dynamic simulation platform. For high voltage side, automatic voltage balance and power-sharing balance can be achieved automatically without mandatory power sharing control. To deal with wide voltage conversion gain application, a multimode modulation with peak current value optimization is proposed. It has the tolerance for the short circuit operation under dc fault. The power transmission can be suppressed rather low during the fault. A 1 kV/1.6 kV 10 kW DCT has been fabricated and applied in a dynamic simulation platform. The bidirectional power flow capability together with the short circuit fault tolerance has been verified through the test.

Original language	English
Pages (from-to)	1948-1957
Number of pages	10
Journal	IEEE Transactions on Power Electronics
Volume	38
Issue number	2
DOIs	https://doi.org/10.1109/TPEL.2022.3212469
Publication status	Published - 1 Feb 2023

Keywords

DC transformer (DCT)
dual active bridge (DAB) converter
dynamic simulation platform
voltage sharing

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10.1109/TPEL.2022.3212469

Cite this

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title = "A DAB-Based DC Transformer for Multiterminal HVdc Dynamic Simulation Platform with Short Circuit Tolerance",

abstract = "The dc transformer (DCT) can be used to achieve a direct connection between various dc bus voltages. A multiwinding dual active bridge (DAB) structure is proposed to be used in that occasion for a dynamic simulation platform. For high voltage side, automatic voltage balance and power-sharing balance can be achieved automatically without mandatory power sharing control. To deal with wide voltage conversion gain application, a multimode modulation with peak current value optimization is proposed. It has the tolerance for the short circuit operation under dc fault. The power transmission can be suppressed rather low during the fault. A 1 kV/1.6 kV 10 kW DCT has been fabricated and applied in a dynamic simulation platform. The bidirectional power flow capability together with the short circuit fault tolerance has been verified through the test.",

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AU - Gu, Huaiguang

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AB - The dc transformer (DCT) can be used to achieve a direct connection between various dc bus voltages. A multiwinding dual active bridge (DAB) structure is proposed to be used in that occasion for a dynamic simulation platform. For high voltage side, automatic voltage balance and power-sharing balance can be achieved automatically without mandatory power sharing control. To deal with wide voltage conversion gain application, a multimode modulation with peak current value optimization is proposed. It has the tolerance for the short circuit operation under dc fault. The power transmission can be suppressed rather low during the fault. A 1 kV/1.6 kV 10 kW DCT has been fabricated and applied in a dynamic simulation platform. The bidirectional power flow capability together with the short circuit fault tolerance has been verified through the test.

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A DAB-Based DC Transformer for Multiterminal HVdc Dynamic Simulation Platform with Short Circuit Tolerance

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Keywords

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