An overview of high voltage conversion ratio DC-DC converter configurations used in DC micro-grid architectures

Arunkumari, T.; Indragandhi, V.

doi:10.1016/j.rser.2017.04.036

Cited by 86 publications

(38 citation statements)

References 110 publications

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“…Besides, current hybrid renewable energy systems with hydrogen storage based on a DC bus configuration are limited to low-power applications due to the use of classic DC/DC converters (buck for PEM EL) [17]. Hence, in order to move towards medium and high-power applications, DC/DC converters must feature high conversion ratio ability [18].…”

Section: Main Requirement For Dc/dc Convertersmentioning

confidence: 99%

Literature Survey of Interleaved DC-DC Step-Down Converters for Proton Exchange Membrane Electrolyzer Applications

Guida

Guilbert

Douine

2019

TEEE

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Recently, the use of electrolyzers for hydrogen production through water electrolysis is of great interest in the industrial field to replace current hydrogen production pathways based on fossil fuels (e.g. oil, coal). The electrolyzers must be supplied with a very low DC voltage in order to produce hydrogen from the deionized water. For this reason, DC-DC step-down converters are generally used. However, these topologies present several drawbacks from output current ripple and voltage gain point of view. In order to meet these expectations, interleaved DC-DC step-down converters are considered as promising and interesting candidates to supply proton exchange membrane (PEM) electrolyzers. Indeed, these converters offer some advantages including output current ripple reduction and reliability in case of power switch failures. In addition, over the last decade, many improvements have been brought to these topologies with the aim to enhance their conversion gain. Hence, the main goal of this paper is to carry out a thorough state-of-the-art of different interleaved step-down DC-DC topologies featuring a high voltage gain, needed for PEM electrolyzer applications.

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Section: Main Requirement For Dc/dc Convertersmentioning

confidence: 99%

Literature Survey of Interleaved DC-DC Step-Down Converters for Proton Exchange Membrane Electrolyzer Applications

Guida

Guilbert

Douine

2019

TEEE

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“…Therefore, the selection of the most suitable technique, to track the unique peak under uniform conditions or to track the global peak under partial shading conditions (PSCs), is compulsory and is considered a hot research area. This will contribute in improving the PV system performance, efficiency, power quality, and reliability …”

Section: Introductionmentioning

confidence: 99%

“…This will contribute in improving the PV system performance, efficiency, power quality, and reliability. [1][2][3][4][5][6][7] Numerous studies have been introduced for conventional MPPT techniques, such as hill climbing (HC), perturb and observe (P&O), and incremental conductance (IC), which are simple and acceptable to track the unique peak on the P-V curve under uniform conditions. [8][9][10][11][12] Under PSCs, many peaks (one global maximum peak [GMP] and many local maximum peaks [LMPs]) in the P-V curve are generated.…”

Section: Introductionmentioning

confidence: 99%

Dynamic global power extraction from partially shaded photovoltaic using deep recurrent neural network and improved PSO techniques

Farh

Eltamaly

Ibrahim

et al. 2019

Int Trans Electr Energ Syst

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Summary Under partial shading (PS) condition, the P‐V curve becomes more complex where many peaks (one global maximum peak [GMP] and many other local maximum peaks [LMPs]) are generated. This GMP changes with time under a time‐variant PS; this is called dynamic GMP. Conventional particle swarm optimization (PSO) can track the GMP under the same PS effectively. Nevertheless, it cannot track the dynamic GMP because all particles will be concentrated at the first GMP caught. In addition, using PSO as a maximum power point tracker (MPPT) technique suffers from obvious power oscillations in the steady state. In this paper, the PSO technique is improved to make it able to follow the dynamic GMP under time‐invariant PS. In addition, a novel deep recurrent neural network (DRNN) is introduced to track the dynamic GMP under time‐variant PS. A detailed comparison between DRNN and improved PSO is introduced, analyzed, and discussed. DRNN performs well compared with the improved PSO in terms of dynamic GMP tracking with almost zero steady‐state oscillation, tracking speed, accuracy, and efficiency.

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“…Therefore, DC microgrids avoid cumbersome DC-AC-DC generation [1][2][3][4]. However, the usage of DC microgrids at distribution scale is increasing with the collaboration of various renewable resources due to the higher penetration of electric vehicles [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Control Methodology for Load Sharing System Restoration in Islanded DC Micro Grid with Faulty Communication Links

et al. 2018

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Abstract:Communication-based distributed secondary control is extensively used in DC microgrids. Compared to centralized control, it can provide better voltage regulation and load sharing in microgrids. A conventional secondary control technique that converges the system to a common operating point is improved by using the control methodology to detect the communication link failure and stabilize the system operation during communication islanding. Recently, more robust control schemes have been proposed to improve resilience, but communication islanding has not been addressed at the secondary level control for which the system requires additional tertiary control. However, link failure is a possibility in the microgrid, so this paper proposes a control scheme at the secondary level to detect communication islanding. Communication islanding may lead the system to unpredictable behavior, which may cause the system to become unstable and may further lead to a cascading failure. The proposed control scheme sustains the stability and operation of a DC microgrid. Voltage and current observer works in a parallel manner with the proposed secondary control to achieve a correction term for global operating points. The proposed control scheme has been verified through analysis and simulation.

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An overview of high voltage conversion ratio DC-DC converter configurations used in DC micro-grid architectures

Cited by 86 publications

References 110 publications

Literature Survey of Interleaved DC-DC Step-Down Converters for Proton Exchange Membrane Electrolyzer Applications

Literature Survey of Interleaved DC-DC Step-Down Converters for Proton Exchange Membrane Electrolyzer Applications

Dynamic global power extraction from partially shaded photovoltaic using deep recurrent neural network and improved PSO techniques

A Control Methodology for Load Sharing System Restoration in Islanded DC Micro Grid with Faulty Communication Links

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