Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters

Andrade, Jéssika Melo de; Coelho, Roberto F.; Lazzarin, Telles Brunelli

doi:10.3390/en15031159

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…Active battery cell balancing topologies also belong to this category. Such devices deal with the mis-match current between elements connected in series [1,4,10]. This is a desirable feature that extends the capability of PV arrays or battery cells, where those systems are usually composed of series-connected sources, with the performance of the whole group limited by the weakest link.…”

Section: Introductionmentioning

confidence: 99%

Review of DC-DC Partial Power Converter Configurations and Topologies

Gsous,

Rizk,

Barbón

et al. 2024

Energies

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The Partial Power Processing (PPP) concept has garnered attention as it enables the down-sizing of converter and component ratings. Unlike conventional power processing, PPP addresses a portion of the transferred power, leading to a reduction in conversion losses. Throughout this paper, the state of the art of isolated and non-isolated DC-DC converter topologies will be revised. Partial Power Converter (PPC) systems represent one of the main streams of PPP, which, based on isolation requirements and converter connections, can further be divided into isolated converters, such as: Input-Parallel-Output-Series (IPOS), Input-Series-Output-Parallel (ISOP), and, Input-Series-Output-Series (ISOS), or non-isolated converters. This work intends to evaluate and differentiate the characteristics of each type of topology while developing analytically possible connections that may require further research and reviewing metrics that help in fair comparisons of different PPC arrangements, operating under different conditions. A thorough revision is provided for DC-DC converter topologies due to their increased importance in present-day applications, such as energy storage, Electric Vehicles (EVs), and Photo-Voltaics (PVs).

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Section: Introductionmentioning

confidence: 99%

Review of DC-DC Partial Power Converter Configurations and Topologies

Gsous,

Rizk,

Barbón

et al. 2024

Energies

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Metodologia para derivação de conversores cc-cc elevadores de alto ganho baseados em conexões diferenciais

De Andrade,

Salvador,

Coelho

et al. 2024

Eletrônica de Potência

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Este artigo apresenta uma metodologia para síntese de topologias de alto ganho a partir da conexão diferencial entre conversores cc-cc básicos. Tais conversores básicos podem ser iguais ou diferentes, mas devem compartilhar referência comum entre entrada e saída e tensões de saída de mesma polaridade. Além da metodologia e da análise de alguns dos conversores sintetizados em modo de condução contínua, o artigo discute sobre processamento parcial de potência, redução de componentes, adição de células de ganho, modelagem e estratégias de controle. A metodologia proposta é verificada por meio de dez protótipos derivados da conexão diferencial entre conversores básicos, considerando tensão de entrada de 20 V, razão cíclica de 0,75 e potência nominal de 100 W. Três novos conversores cc-cc de ultra alto ganho também são sintetizados a partir da inserção de células de ganho nos conversores diferenciais propostos, sendo dois deles avaliados experimentalmente, apresentado rendimentos máximos próximo de 97%.

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State-of-the-Art Grid Stability Improvement Techniques for Electric Vehicle Fast-Charging Stations for Future Outlooks

Momoh,

Zulkifli,

Korba

et al. 2023

Energies

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The growing trend for electric vehicles (EVs) and fast-charging stations (FCSs) will cause the overloading of grids due to the high current injection from FCSs’ converters. The insensitive nature of the state of charge (SOC) of EV batteries during FCS operation often results in grid instability problems, such as voltage and frequency deviation at the point of common coupling (PCC). Therefore, many researchers have focused on two-stage converter control (TSCC) and single-stage converter (SSC) control for FCS stability enhancement, and suggested that SSC architectures are superior in performance, unlike the TSCC methods. However, only a few research works have focused on SSC techniques, despite the techniques’ ability to provide inertia and damping support through the virtual synchronous machine (VSM) strategy due to power decoupling and dynamic response problems. TSCC methods deploy current or voltage control for controlling EVs’ SOC battery charging through proportional-integral (PI), proportional-resonant (PR), deadbeat or proportional-integral-derivative (PID) controllers, but these are relegated by high current harmonics, frequency fluctuation and switching losses due to transient switching. This paper reviewed the linkage between the latest research contributions, issues associated with TSCC and SSC techniques, and the performance evaluation of the techniques, and subsequently identified the research gaps and proposed SSC control with SOC consideration for further research studies.

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Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters

Cited by 3 publications

References 29 publications

Review of DC-DC Partial Power Converter Configurations and Topologies

Review of DC-DC Partial Power Converter Configurations and Topologies

Metodologia para derivação de conversores cc-cc elevadores de alto ganho baseados em conexões diferenciais

State-of-the-Art Grid Stability Improvement Techniques for Electric Vehicle Fast-Charging Stations for Future Outlooks

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