DC/DC Converter for Bipolar LVdc System With Integrated Voltage Balance Capability

Li, Binbin; Fu, Qintian; Mao, Shukai; Zhao, Xiaodong; Xu, Dianguo; Gong, Xiaolin; Wang, Qian

doi:10.1109/tpel.2020.3032417

Cited by 43 publications

(7 citation statements)

References 23 publications

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“…At the same time, it can fully obtain balanced bipolar voltage level under the entire unbalanced load condition using the dc offset currents through the dc inductors, besides operating at zero voltage switching (ZVS). A similar configuration was recently proposed [39]. The next voltage balancer is composed by a high-frequency galvanic isolated series of two-level DAB, known as DAB+DAB [40] (Fig.…”

Section: A Centralized Architecturementioning

confidence: 97%

DC–DC Converters for Bipolar Microgrid Voltage Balancing: A Comprehensive Review of Architectures and Topologies

Pires¹,

Cordeiro

Roncero‐Clemente

et al. 2023

IEEE J. Emerg. Sel. Topics Power Electron.

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Section: A Centralized Architecturementioning

confidence: 97%

DC–DC Converters for Bipolar Microgrid Voltage Balancing: A Comprehensive Review of Architectures and Topologies

Pires¹,

Cordeiro

Roncero‐Clemente

et al. 2023

IEEE J. Emerg. Sel. Topics Power Electron.

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“…1) In terms of the number of components, the proposed converter has fewer semiconductor devices and a lower cost than the solutions in [32] and [33]. Furthermore, the proposed converter has fewer magnetic elements than the converter in [30] and [31].…”

Section: Comparisonmentioning

confidence: 97%

“…However, hard switching characteristics and lack of galvanic isolation hinder its applications. In [30] and [31], a dc/dc converter with bipolar output and integrated bus voltage balance capability based on the CLLC bidirectional resonant converter and voltage balancer is presented. The converter has the advantages of isolated bipolar output ports, soft switching, and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Symmetrical Bipolar Output Isolated Four-Port Converters Based on Center-Tapped Winding for Bipolar DC Bus Applications

Tian

Zhou

et al. 2021

IEEE Trans. Power Electron.

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“…2(b). The buckboost circuit [13], dual-buck half-bridge circuit [14], and Sepic-and Cuk-type circuits have been adopted as voltage balancers [15]. These topologies have a disadvantage of relatively high current ripple in the inductor and thus require significant filtering capacitance.…”

Section: Introductionmentioning

confidence: 99%

Power and Voltage Control Based on DC Offset Injection for Bipolar Low-voltage DC Distribution System

Kong,

Zhang,

Zhou

et al. 2023

Journal of Modern Power Systems and Clean Energy

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The bipolar low-voltage DC (LVDC) distribution system has become a prospective solution to better integration of renewables and improvement of system efficiency and reliability. However, it also faces the challenge of power and voltage imbalance between two poles. To solve this problem, an interface converter with bipolar asymmetrical operating capabilities is applied in this paper. The steady-state models of the bipolar LVDC distribution system equipped with this interface converter in the gridconnected mode and off-grid mode are analyzed. A control scheme based on DC offset injection at the secondary side of the interface converter is proposed, enabling the bipolar LVDC distribution system to realize the unbalanced power transfer between two poles in the grid-connected mode and maintain the inherentpole voltage balance in the off-grid mode. Furthermore, this paper also proposes a primary-side DC offset injection control scheme according to the analysis of the magnetic circuit model, which can eliminate the DC bias flux caused by the secondaryside DC offset. Thereby, the potential core magnetic saturation and overcurrent issues can be prevented, ensuring the safety of the interface converter and distribution system. Detailed simulations based on the proposed control scheme are conducted to validate the function of power and voltage balance under the operation conditions of different DC loads.

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DC/DC Converter for Bipolar LVdc System With Integrated Voltage Balance Capability

Cited by 43 publications

References 23 publications

DC–DC Converters for Bipolar Microgrid Voltage Balancing: A Comprehensive Review of Architectures and Topologies

DC–DC Converters for Bipolar Microgrid Voltage Balancing: A Comprehensive Review of Architectures and Topologies

Symmetrical Bipolar Output Isolated Four-Port Converters Based on Center-Tapped Winding for Bipolar DC Bus Applications

Power and Voltage Control Based on DC Offset Injection for Bipolar Low-voltage DC Distribution System

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