Efficiency improvements in a Single Active Bridge modular DC-DC converter with snubber capacitance optimisation

Ting, Yeh; Haan, Sjoerd de; Ferreira, J.A.

doi:10.1109/ipec.2014.6870076

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…It is composed of a controllable half-bridge inverter on the primary side of the high-frequency transformer, and the H-bridge diode rectifier is connected on the secondary side [12][13][14]. The power of the SAB converter is unidirectional and controlled from the primary side of the transformer with active switches and is transferred to the secondary [15][16][17]. The combination of controllable switches (T 1 and T 2 ) with diodes (D SN1 and D SN2 ) acts as bidirectional switches.…”

Section: Structurementioning

confidence: 99%

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Analyzing the Effectiveness of Single Active Bridge DC-DC Converter under Transient and Load Variation

2023

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Over the last couple of years, the use of DC-DC converters is being widely used in several applications. The need for a reliable and robust converter for application is very important because of the social impact that it can have on the losses in high-power electronics applications and output efficiency. This paper gives a comprehensive review of single-active-bridge (SAB) converters. The detail modelling and performance evaluation of SAB topology with PI controllers are also presented in this article. The performance of SAB topology is analyzed under transient and load variations. Due to the nonlinear behavior of SAB topology, the traditional PI controllers have not minimized transient disturbances. The major problem with the usage of conventional controllers and traditional configurations for the SAB converter are the ripples, which are generated in output voltage and current. These ripples severely affect the performance of the SAB converter. An effort has been made to analyze and contribute to the importance of a robust controller to mitigate the converter dynamics. This article also gives an in-depth dynamic analysis of SAB converters, which were controlled using PI controllers and failed to perform satisfactorily under non-linearities.

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Section: Structurementioning

confidence: 99%

“…The average state-space model of the SAB converter is represented by (17): The state-space average model of the SAB topology can be found by considering (11) and (12).…”

Section: State-space Modelling Of Sab Convertermentioning

confidence: 99%

Analyzing the Effectiveness of Single Active Bridge DC-DC Converter under Transient and Load Variation

2023

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“…Configuring a modular DC-DC converter in input-parallel and output-parallel (IPOP) form makes it efficient and reliable to increase the power rating of converter, specifically the current rating. In fact, modular IPOP conversion systems allow the use of low-power converter modules for high-power applications (Ting et al, 2014). The IPOP DC-DC converters are suitable for medium voltage and high-current applications, especially using high-frequency isolation instead of line-frequency transformer in DC distribution systems.…”

Section: Introductionmentioning

confidence: 99%

A modular DC-DC converter with zero voltage switching capability

Sedaghati

Haghmaram

2020

IJPELEC

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A bidirectional DC-DC converter with high power density is proposed in this paper. The presented converter provides power transfer in both directions only with adjusting phase-shift angle. Zero voltage switching (ZVS) in both turn on and turn off moments of all switches is the major capability of the converter that makes it suitable for high-power applications. ZVS of the converter is provided without any auxiliary devices. High-frequency transformers are employed in the converter structure to match the converter two sides voltage. Moreover, the transformer leakage inductance along with external auxiliary inductance acts as energy storage in power transfer from one side of the converter to the other side. Steady-state operation of the converter is analysed. ZVS criteria for the proposed converter are studied and finally, experimental measurement results of laboratory-scale prototype are presented.

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“…The converter modules need to be highly efficient to decrease the loss in the process of power transfer to the battery pack. For this purpose, phase-shedding has been introduced to increase the efficiency of such modular DC-DC converters at light-loads [8]. However, deactivating few numbers of modules (or phases) at medium and light load causes an increase in the amplitudes of the input and output current ripples [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Current Ripple Minimisation Based on Phase-Shedding of DC-DC Interleaved Converters for EV Charging System

Alharbi

Dahidah

Ali

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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This paper introduces a control scheme to improve efficiency as well as both the input and output current ripples of multiphase interleaved buck converter (IBC), which is suitable for applications that require a wide range of output voltage. The number of phases is dynamically changed throughout the entire range of the output voltage in order to obtain the optimum efficiency and the lowest output ripple possible. The paper demonstrates the proposed approach on a single converter of a fast DC charger module which usually consists of multiple converters connected in input-parallel output parallel (IPOP) configuration. Simulation results show that the proposed technique significantly reduces the output current ripple when compared with the conventional phaseshedding technique while maintaining satisfactory high efficiency across the entire range of the output voltage.

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Efficiency improvements in a Single Active Bridge modular DC-DC converter with snubber capacitance optimisation

Cited by 6 publications

References 7 publications

Analyzing the Effectiveness of Single Active Bridge DC-DC Converter under Transient and Load Variation

Analyzing the Effectiveness of Single Active Bridge DC-DC Converter under Transient and Load Variation

A modular DC-DC converter with zero voltage switching capability

Current Ripple Minimisation Based on Phase-Shedding of DC-DC Interleaved Converters for EV Charging System

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