The configuration of electric vehicle system using isolated DC-DC converter for a low-voltage and high-current type battery

Shin, Chang-Hyun; Kim, Doyun; Ko, An-Yeol; Won, Il-Kuen; Kim, Young-Real; Won, Chung-Yuen

doi:10.1109/icpe.2015.7168167

Cited by 11 publications

(7 citation statements)

References 6 publications

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Section: Charging Strategiesmentioning

confidence: 99%

“…The topologies for the EV fast charger using the current source and voltage source are illustrated in Figures 10 and 11, respectively [97]. Another topology is described in [98], where the converter power is delivered to drive a motor. Both CLLC and DAB can be used as full-bridge and half-bridge configurations to achieve optimal soft-switching features.…”

Section: Charging Strategiesmentioning

confidence: 99%

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A Critical Review on Charging Technologies of Electric Vehicles

et al. 2022

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The enormous number of automobiles across the world has caused a significant increase in emissions of greenhouse gases, which pose a grave and mounting threat to modern life by escalating global warming and polluting air quality. These adverse effects of climate change have motivated the automotive sector to reform and have pushed the drive towards the transformation to fully electric. Charging time has been identified as one of the key barriers in large-scale applications of Electric Vehicles (EVs). In addition, various challenges are associated with the formulation of a safe charging scheme, which is concerned with appropriate charging converter architecture, with the aim of ensuring a safe charging protocol within a range of 5–10 min. This paper provides a systematic review of thharging technologies and their impacts on battery systems, including charger converter design and associated limitations. Furthermore, the knowledge gap and research directions are provided with regard to the challenges associated with the charger converter architecture design at the systems level.

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Section: Charging Strategiesmentioning

confidence: 99%

Section: Charging Strategiesmentioning

confidence: 99%

A Critical Review on Charging Technologies of Electric Vehicles

et al. 2022

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“…Therefore, [24] and [25] show different approaches for the application of supercapacitors for an NPC and an MMC multilevel traction inverter, but a common DC-link is used and the capacitors thus require a voltage balancing algorithm. Placing several battery packages directly into the module, as suggested in [26]- [28], provides an intrinsic safety regarding the battery pack voltage level [29], [30]. However, the topic of HESS directly employed in the modules for traction applications is not covered yet.…”

Section: A Literature Reviewmentioning

confidence: 99%

Battery Loss and Stress Mitigation in a Cascaded H-Bridge Multilevel Inverter for Vehicle Traction Applications by Filter Capacitors

Kersten

Theliander

Grunditz

et al. 2019

IEEE Trans. Transp. Electrific.

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In this paper, two types of filter capacitors of varying capacity, were connected to the battery packs of a cascaded H-Bridge single-star multilevel vehicle traction inverter, and their influence on the battery losses has been analyzed. The battery and capacitor simulation models used are experimentally verified in a down-scaled system. Different capacitor configurations were simulated for four drive cycle scenarios to determine the potentials for the mitigation of current pulse stresses and battery loss reduction with respect to the added weight. By adding capacitors corresponding to a weight of 4% of the initial battery storage, the peak current is reduced by 5%-20%, depending on the operating point from DC to a few kHz, and the battery losses are reduced by 10%. In comparison, it is demonstrated that adding supercapacitors is more beneficial for lower output frequencies, while adding electrolytic capacitors is better for higher output frequencies. Furthermore, the low-order voltage harmonics of the DC-rails between the converter and battery were reduced by 10%-30% for frequencies above 9 kHz, which decreases the potential of electromagnetic disturbances. In addition, during cold battery temperatures, when it is very important to avoid heavy cyclings, the loss reduction using the capacitors was 2.5 times larger than for nominal temperature.

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“…The positive characteristics of the boost-flyback converter allow it to be used in many applications. As in [10][11][12], due to its high voltage gain and reduced stress in the semiconductors, this topology is indicated for electric vehicle (EV) applications.…”

Section: Introductionmentioning

confidence: 99%

Boost–flyback converter with interleaved input current and output voltage series connection

Brockveld

Waltrich

2018

IET Power Electronics

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This study proposed a high-gain dc-dc converter with an interleaved current at the input stage and voltage series connection at the output stage. This converter was designed based on the boost-flyback topology, which has as main characteristic high voltage gain. Normally, the boost-flyback is designed with the low input voltage, and therefore, the current at this stage reaches high current values, limiting the converter design. Therefore, paralleling the input connection allows the current division between the semiconductors, reducing the switching stress. As part of the converter analysis, in this study, the static and the dynamic converter model are obtained to further design the converter controllers. Furthermore, simulations and experimental results for the proposed converter, operating in closed-looping control, were designed for a peak power of 1.2 kW, reaching a maximum efficiency of 97.5%. Nomenclature S 1, 2, 3 control switch D B(1, 2, 3) boost output diode D F(1, 2, 3) flyback output diode C F(1, 2, 3) flyback output capacitor C B boost output capacitor L m(1, 2, 3) magnetising inductor of coupled inductors V Lm(1, 2, 3) magnetising inductance voltage I 1, 2, 3 magnetising inductance current in the primary I 4, 5, 6 magnetising inductance current in the secondary IET Power Electron.

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The configuration of electric vehicle system using isolated DC-DC converter for a low-voltage and high-current type battery

Cited by 11 publications

References 6 publications

A Critical Review on Charging Technologies of Electric Vehicles

A Critical Review on Charging Technologies of Electric Vehicles

Battery Loss and Stress Mitigation in a Cascaded H-Bridge Multilevel Inverter for Vehicle Traction Applications by Filter Capacitors

Boost–flyback converter with interleaved input current and output voltage series connection

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