Design and performance analysis of the three-level isolated DC-DC converter with the nanocyrstalline core transformer

Özdemir, Şaban; Balci, Selami; Altın, Necmi

doi:10.1016/j.ijhydene.2017.02.158

Cited by 24 publications

(9 citation statements)

References 12 publications

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“…On the other hand, nanocrystalline alloys have also been designed at a frequency of 10 kHz [14,15,21,22], obtaining high efficiencies (>98%) [14,21,22], and power densities of up to 23.3 kW/L [14,22]. As shown in Table 13, in the present proposal a transformer efficiency of 99.8% and a power density of 36.91 kW/L are obtained.…”

Section: Discussionmentioning

confidence: 72%

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Ferrites and Nanocrystalline Alloys Applied to DC–DC Converters for Renewable Energies

et al. 2022

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The medium frequency transformer (MFT) with nanocrystalline alloys is quintessential in new DC–DC converters involved in various front-end applications. The center piece to achieve high-performance, efficient MFTs is the core. There are various options of core materials; however, no deep information is available about which material characteristics and design procedure combo are best to get high performance MFTs while operating at maximal power density. To provide new insights about interrelation between the selection of the core material with the compliance technical specifications, differently to other proposals, this research work aims to design and build, with the same methodology, two MFT prototypes at 20 kHz, with nanocrystalline and ferrite cores, to highlight power density, and overall performance and cost, as matching design criteria. As the experimental results show, a nanocrystalline core has the highest power density (36.91 kW/L), designed at 0.8 T to obtain low losses at 20 kHz, achieving an efficiency of 99.7%. The power density in the ferrite MFT is 56.4% lower than in the nanocrystalline MFT. However, regarding construction cost, the ferrite MFT is 46% lower, providing this a trend towards low-cost DC–DC converters. Finally, high power density in MFTs increases the power density of power DC–DC converters, which have relevant applications in fuel cell-supplied systems, renewable energies, electric vehicles, and solid-state transformers.

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Section: Discussionmentioning

confidence: 72%

“…Better performance MTFs are needed for improving such converters. Therefore, an important point is the selection of the core material in the pursuit of achieving high power density and excellent efficiency of the MFT [11][12][13][14][15]. density at high frequencies.…”

Section: Introduction 1motivation and Incitementmentioning

confidence: 99%

Ferrites and Nanocrystalline Alloys Applied to DC–DC Converters for Renewable Energies

et al. 2022

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“…It does, however, have large reactive current flows which both lead to an increase in power losses and creates electrical stress on its switching elements [29]. Several control methods and the application of semiconductor devices have been proposed as solutions to these limitations and as a means to improving efficiency [30][31][32]. A unified high-frequency AC buck/boost (UHFBB) control strategy for dual-active-bridge bidirectional converter (DAB-BDC) is proposed as a means of achieving optimized current stress of switches and soft switching in a broader range whereby the buffering inductor current is operated in discontinuous conduction mode (DCM) or boundary conduction mode (BCM), resulting in the ZCS of switches as well as high efficiency [31].…”

Section: Power Management Strategies For V2g Systemmentioning

confidence: 99%

Review on Vehicle-to-Grid Systems: The Most Recent Trends and Smart Grid Interaction Technologies

Altın

Sarp

2020

Gazi University Journal of Science

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“…Parallel to the developments in electronics, BJT, MOSFET and IGBT are used as switching elements in dc-dc converters in recent years. However, IGBT and MOSFETs are preferred in high-power converter applications [12,13]. Fig.…”

Section: Theoretical Explanation Of the Buck Converter Circuitmentioning

confidence: 99%

Design and Implementation of A Test Device for Determining the Capacity of Industrial Battery Banks

Zürey

Sabancı

Balci

2020

Balkan Journal of Electrical and Computer Engineering

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In this study, a test device is developed to measure the capacities and performances of high capacity battery banks and to detect broken cells. Batteries lose their performance over time due to their chemical properties, storage and usage conditions, production technologies. Some batteries may even become completely unusable long before the promised life cycle. Through this test device, the instant capacity of the battery banks is measured. Based on the data obtained, quantitative data such as state of health and nominal energy of the battery bank are calculating. It is determined whether the battery bank will meet the need according to its intended use. In this way, it is ensured to prevent possible losses by determining the battery cells or groups that need to be changed.

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Design and performance analysis of the three-level isolated DC-DC converter with the nanocyrstalline core transformer

Cited by 24 publications

References 12 publications

Ferrites and Nanocrystalline Alloys Applied to DC–DC Converters for Renewable Energies

Ferrites and Nanocrystalline Alloys Applied to DC–DC Converters for Renewable Energies

Review on Vehicle-to-Grid Systems: The Most Recent Trends and Smart Grid Interaction Technologies

Design and Implementation of A Test Device for Determining the Capacity of Industrial Battery Banks

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