Transformer design in a medium voltage DC/DC converter for a DC collection network

Sang, Yu; Junyent-Ferré, Adrià; Green, Tim

doi:10.23919/epe17ecceeurope.2017.8099269

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…L s is the equivalent series inductance of the transformer in each phase, and the resistance is usually small enough to be ignored. It is suggested to use the transformer leakage inductance as the series inductance, in order to make the converter more compact and efficient [29]. U dc1 and U dc2 are the DC voltages on the primary side and secondary side.…”

Section: Converter Descriptionmentioning

confidence: 99%

“…Assume the converter is lossless, the power flow through the AC-link is calculated as (29) In this mode, the power increases monotonically with the increase of d 1 .…”

Section: B Continuous Current Modementioning

confidence: 99%

“…The power flow expressions of the low DC voltage conversion ratio (m ≤ 1/2) are shown in (25), (29), (33) and (37). P/P 0 under low DVCR conditions is summarized here as:…”

Section: Performance Evaluation and Comparisonmentioning

confidence: 99%

“…The rms values of voltage e m = (u ac1 +u ac2 )/2 and current i L are used to calculate the transformer magnetic core losses and winding losses respectively [29]. It is necessary to analyze them under different duty cycles, not only under the 50% duty cycle.…”

Section: B Impact On Switches and Ac-link MV Transformersmentioning

confidence: 99%

See 3 more Smart Citations

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Sang

Junyent-Ferré

Green

2020

IEEE Trans. Power Electron.

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Single Active Bridge (SAB) DC/DC converters are attractive options for unidirectional DC/DC conversion in future medium power generation applications, offering galvanic isolation and a diode-based output side. SAB DC/DC converters must be controlled by adjusting the active bridge switching duty cycle, unlike Dual Active Bridge (DAB) converters where the phase-shift angle control is normally used. This paper presents a comprehensive analysis of the operational principles of threephase SAB (3p-SAB) DC/DC converters that arise from different duty cycle operation ranges. Moreover, the converter performances such as transformer harmonic currents are analyzed and are compared between different input and output DC voltage conditions. Finally, an experimental validation using a small scale prototype is presented. Index Terms-Three-phase single active bridge DC/DC converter, operational modes, duty cycle control, performances.

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Section: Converter Descriptionmentioning

confidence: 99%

“…Assume the converter is lossless, the power flow through the AC-link is calculated as (29) In this mode, the power increases monotonically with the increase of d 1 .…”

Section: B Continuous Current Modementioning

confidence: 99%

“…The power flow expressions of the low DC voltage conversion ratio (m ≤ 1/2) are shown in (25), (29), (33) and (37). P/P 0 under low DVCR conditions is summarized here as:…”

Section: Performance Evaluation and Comparisonmentioning

confidence: 99%

Section: B Impact On Switches and Ac-link MV Transformersmentioning

confidence: 99%

See 2 more Smart Citations

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Sang

Junyent-Ferré

Green

2020

IEEE Trans. Power Electron.

Self Cite

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“…In recent decades, high frequency and high-power DC-DC converters have been used because of their outrageous results and significance in a few regions of the energy sector such as distribution grids, renewable energy sector, energy storage system electric vehicles, and data centers. DC-DC converters have very wide industrial applications and in particular, the single active bridge (SAB3) converter is an advanced type of DC-DC converter [1]. SAB3 converter due to its compact size and attractive features, is used in high power applications such as high voltage direct current (HVDC), photovoltaic systems, and wind turbines.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Three-Phase Single Active Bridge DC-DC Converter with Different Mode of Conduction with Transformer Vector Groups

Mahesar¹

2020

IJST

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Background/objectives: This research study compares the performance of a three-phase single active bridge DC-DC converter with several operating modes along with vector groups in order to present the importance and applications of transformer vector groups in the electrical network system. Methods/statistical analysis: In order to analyze and compare the operating characteristics of three-phase single active bridge converter with vector groups of transformer. Initially, we made a detailed study of vector groups of transformers through literature review. Then the development of simulation model of three-phase single active bridge DC-DC converter with transformer vector groups while operating with different operating modes of three-phase inverter by using MATLAB/SIMULINK software was made. Findings: We investigated Total Harmonic Distortion (THD) in terms of voltage and current waveforms with both resistive and inductive load of SAB3 converter with the different transformer vector group while operating with different modes of conduction, i.e., 120, 150, and 180. Improvements: Undoubtedly, today's world is moving towards replacing fossil fuels with renewable energy resources. Three-phase single active bridge DC-DC converters are widely advantageous. From the simulated results, it is clear that at 150-operating mode, the SAB3 generated fewer harmonics in terms of voltage and current for both resistive and inductive load as compared to other operating modes.

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Integrated Magnetics for DAB Converter Using Nano-Crystalline & Ferrite Cores

Chattopadhyay,

Ohodnicki,

Beddingfield

et al. 2023

2023 IEEE Energy Conversion Congress and Exposition (ECCE)

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Transformer design in a medium voltage DC/DC converter for a DC collection network

Cited by 4 publications

References 16 publications

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Comparative Analysis of Three-Phase Single Active Bridge DC-DC Converter with Different Mode of Conduction with Transformer Vector Groups

Integrated Magnetics for DAB Converter Using Nano-Crystalline & Ferrite Cores

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