State-of-the-art Charging Solutions for Electric Transportation and Autonomous E-mobility

Singh, Siddhartha A.; Ronanki, Deepak; Praneeth, A. V. J. S.; Williamson, Sheldon S.

doi:10.21622/resd.2018.04.1.002

Cited by 2 publications

(1 citation statement)

References 51 publications

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“…To suppress the voltage surge, an RCD snubber circuit was installed at the output of the diode bridge rectifier circuit [11]. A hybrid-switching converter was then proposed to achieve minimal voltage stress of the diode bridge rectifier circuit [12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Unidirectional Secondary Resonant Single Active Bridge DC–DC Converter

Tuan

Takeshita

2021

Energies

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A compact and highly efficient unidirectional DC–DC converter is required as a battery charger for electrical vehicles, which will rapidly become widespread in the near future. The single active bridge (SAB) converter is proposed as a simple and high-frequency isolated unidirectional converter, which is comprised of an active H-bridge converter in the primary side, an isolated high frequency transformer, and a rectifying secondary diode bridge output circuit. This paper presents a novel, unidirectional, high-frequency isolated DC–DC converter called a Secondary Resonant Single Active Bridge (SR–SAB) DC–DC converter. The circuit topology of the SR–SAB converter is a resonant capacitor connected to each diode in parallel in order to construct the series resonant circuit in the secondary circuit. As a result, the SR–SAB converter achieves a higher total power factor at the high frequency transformer and a unity voltage conversion ratio under the unity transformer turns ratio. Small and nonsignificant overshoot values of current and voltage waveforms are observed. Soft-switching commutations of the primary H-bridge circuit and the soft recovery of secondary diode bridge are achieved. The operating philosophy and design method of the proposed converter are presented. Output power control using transformer frequency variation is proposed. The effectiveness of the SR–SAB converter was verified by experiments using a 1 kW, 48 VDC, and 20 kHz laboratory prototype.

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Section: Introductionmentioning

confidence: 99%

Analysis of Unidirectional Secondary Resonant Single Active Bridge DC–DC Converter

Tuan

Takeshita

2021

Energies

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An Analysis-Supported Design of a Single Active Bridge (SAB) Converter

Jha

Forato

Prakash³

et al. 2022

Energies

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Currently, due to its various applications, the high-performance isolated dc-dc converter is in demand. In applications where unidirectional power transfer is required, the single active bridge (SAB) is the most suitable one due to its simplicity and ease of control. The general schematic of the SAB converter consists of an active bridge and a passive bridge, which are connected through a high-frequency transformer thus isolated. The paper summarizes the behavior of this converter in its three operation modes, namely the continuous, discontinuous, and boundary modes. Later, the features of this converter, such as its input-to-output and external characteristics are discussed. Input-to-output characteristics include the variation of converter output power, voltage, and current with an input control variable i.e., phase-shift angle, whereas the external characteristic is the variation of the output voltage as a function of output current. In this discussion, the behavior of this converter in its extreme operating conditions is also examined. The features of the characteristics are elucidated with the help of suitable plots obtained in the MATLAB environment. Afterward, the specifications of a SAB converter are given and, based on the results of the analysis, a detailed design of its electrical elements is carried out. To validate the features and the design procedures presented in this paper, a prototype is developed. An element-wise loss estimation is also carried out and the efficiency of the converter has been found to be approximately equal to 93%. Lastly, the test was executed on this prototype, confirming the theoretical findings concerning this converter.

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State-of-the-art Charging Solutions for Electric Transportation and Autonomous E-mobility

Cited by 2 publications

References 51 publications

Analysis of Unidirectional Secondary Resonant Single Active Bridge DC–DC Converter

Analysis of Unidirectional Secondary Resonant Single Active Bridge DC–DC Converter

An Analysis-Supported Design of a Single Active Bridge (SAB) Converter

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