Bipolar DC Power Conversion: State-of-the-Art and Emerging Technologies

Rivera, Sebastian; Lizana, Ricardo; Kouro, Samir; Dragičević, Tomislav; Wu, Bin

doi:10.1109/jestpe.2020.2980994

Cited by 104 publications

(31 citation statements)

References 75 publications

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“…Considering the zero-sequence component, the vector synthesis of V ref in a switching period can be represented as (24) and the duration time of the space vectors should satisfy (25). 1 ( )…”

Section: Proposed Modulation Methods Based On Zvrmentioning

confidence: 99%

“…In addition, the voltage balancer also increases the cost, power loss and complexity of the converter. In recent years, a three-phase coupled inductor-based bipolar-output active rectifier (TCIBAR) has been proposed to establish the bipolar dc distribution system in decentralized power grids [24], [25]. In the topology of TCIBAR, a three-phase coupled inductor (TCI) is connected between the ac and dc sides of a two-level voltage source converter (VSC).…”

Section: Introductionmentioning

confidence: 99%

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DC Voltage Balancing Strategy of a Bipolar-Output Active Rectifier for More Electric Aircraft Based on Zero Vector Redistribution

Zhao

Huang

2021

IEEE Access

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Section: Proposed Modulation Methods Based On Zvrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

DC Voltage Balancing Strategy of a Bipolar-Output Active Rectifier for More Electric Aircraft Based on Zero Vector Redistribution

Zhao

Huang

2021

IEEE Access

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“…Furthermore, in case of the failure of one of the wires, the bipolar structure can, in exceptional situations, continue to operate, a feature that cannot be guaranteed by the unipolar structure. In [85], a broad evaluation related to emerging technologies and directly related to bipolar DC grids is presented. Despite the emphasis given to DC grids with a bipolar structure, they are susceptible to some problems such as the case of voltage imbalances, mainly due to imbalances in the loads or in the operating power for each of the levels.…”

Section: Unipolar and Bipolar DC Electrical Power Gridsmentioning

confidence: 99%

Review of a Disruptive Vision of Future Power Grids: A New Path Based on Hybrid AC/DC Grids and Solid-State Transformers

et al. 2021

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Power grids are evolving with the aim to guarantee sustainability and higher levels of power quality for universal access to electricity. More specifically, over the last two decades, power grids have been targeted for significant changes, including migration from centralized to decentralized paradigms as a corollary of intensive integration of novel electrical technologies and the availability of derived equipment. This paper addresses a review of a disruptive vision of future power grids, mainly focusing on the use of hybrid AC/DC grids and solid‑state transformers technologies. Regarding hybrid AC/DC grids in particular, they are analyzed in detail in the context of unipolar and bipolar DC grids (i.e., two‑wire or three‑wire DC grids), as well as the different structures concerning coupled and decoupled AC configurations with low‑frequency or high‑frequency isolation. The contextualization of the possible configurations of solid‑state transformers and the different configurations of hybrid transformers (in the perspective of offering benefits for increasing power quality in terms of currents or voltages) is also analyzed within the perspective of the smart transformers. Additionally, the paper also presents unified multi‑port systems used to interface various technologies with hybrid AC/DC grids, which are also foreseen to play an important role in future power grids (e.g., the unified interface of renewable energy sources and energy storage systems), including an analysis concerning unified multi‑port systems for AC or DC grids. Throughout the paper, these topics are presented and discussed in the context of future power grids. An exhaustive description of these technologies is made, covering the most relevant and recent structures and features that can be developed, as well as the challenges for the future power grids. Several scenarios are presented, encompassing the mentioned technologies, and unveiling a progressive evolution that culminates in the cooperative scope of such technologies for a disruptive vision of future power grids.

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“…Furthermore, among other advantages, it should be highlighted the possibility to improve efficiency, resilience, and fault-tolerance. An assessment of promising technologies associated with bipolar structures is presented in [40]. Despite such advantages, bipolar structures have an additional problem, which is related to the voltages unbalances due to the linked technologies and bidirectional operation.…”

Section: Unipolar and Bipolar DC Gridsmentioning

confidence: 99%

The Role of Front-End AC/DC Converters in Hybrid AC/DC Smart Homes: Analysis and Experimental Validation

Monteiro

Franco

et al. 2021

Electronics

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Electrical power grids are rapidly evolving into smart grids, with smart homes also making an important contribution to this. In fact, the well-known and emerging technologies of renewables, energy storage systems and electric mobility are each time more distributed throughout the power grid and included in smart homes. In such circumstances, since these technologies are natively operating in DC, it is predictable for a revolution in the electrical grid craving a convergence to DC grids. Nevertheless, traditional loads natively operating in AC will continue to be used, highlighting the importance of hybrid AC/DC grids. Considering this new paradigm, this paper has as main innovation points the proposed control algorithms regarding the role of front-end AC/DC converters in hybrid AC/DC smart homes, demonstrating their importance for providing unipolar or bipolar DC grids for interfacing native DC technologies, such as renewables and electric mobility, including concerns regarding the power quality from a smart grid point of view. Furthermore, the paper presents a clear description of the proposed control algorithms, aligned with distinct possibilities of complementary operation of front-end AC/DC converters in the perspective of smart homes framed within smart grids, e.g., enabling the control of smart homes in a coordinated way. The analysis and experimental results confirmed the suitability of the proposed innovative operation modes for hybrid AC/DC smart homes, based on two different AC/DC converters in the experimental validation.

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Bipolar DC Power Conversion: State-of-the-Art and Emerging Technologies

Cited by 104 publications

References 75 publications

DC Voltage Balancing Strategy of a Bipolar-Output Active Rectifier for More Electric Aircraft Based on Zero Vector Redistribution

DC Voltage Balancing Strategy of a Bipolar-Output Active Rectifier for More Electric Aircraft Based on Zero Vector Redistribution

Review of a Disruptive Vision of Future Power Grids: A New Path Based on Hybrid AC/DC Grids and Solid-State Transformers

The Role of Front-End AC/DC Converters in Hybrid AC/DC Smart Homes: Analysis and Experimental Validation

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