A design and control of bi-directional non-isolated DC-DC converter for rapid electric vehicle charging system

Kang, Tak; Kim, Changwoo; Suh, Yongsug; Park, Hyeoncheol; Kang, Byungik; Kim, Daegyun

doi:10.1109/apec.2012.6165792

Cited by 48 publications

(18 citation statements)

References 12 publications

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“…This principle is well explained analytically in [18]. Figure 7 shows the battery charging profile for general battery chargers [19]. At the beginning, the DC-DC converter gradually ramps up charging current with a staircase wave to avoid damaging the battery until each battery cell voltage reaches to the threshold voltage or the battery voltage reaches to point A.…”

Section: Soft Switching Characteristicmentioning

confidence: 90%

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A High-Power DC-DC Converter Topology for Battery Charging Applications

Lee

2017

Energies

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A DC-DC converter that can be applied for battery chargers with the power-capacity of over 7-kW for electric vehicles (EVs) is presented in this paper. Due to a new architecture, the proposed converter achieves a reduction of conduction losses at the primary side by as much as 50% and has many benefits such as much smaller circulating current, less duty-cycle loss, and lower secondary-voltage stress. In addition, its power handing capacity can be upsized easily with the use of two full-bridge inverters and two transformers. Besides, all the switches in the converter achieve zero-voltage switching (ZVS) during whole battery charging process, and the size of output filter can be significantly reduced. The circuit configuration, operation, and relevant analysis are presented, followed by the experiment on a prototype realized with a 7-kW charger. The experimental results validate the theoretical analysis and show the effectiveness of the proposed converter as battery charger.

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Section: Soft Switching Characteristicmentioning

confidence: 90%

“…Figure 7. General battery charging profile [19]. Figure 8 shows the operations, relevant operating waveforms, and equivalent circuits of the proposed converter with the battery charging profile shown in Figure 7.…”

Section: Soft Switching Characteristicmentioning

confidence: 99%

A High-Power DC-DC Converter Topology for Battery Charging Applications

Lee

2017

Energies

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“…A small dead time provided between both the operation so that cross conduction can be avoided [17] [21]. Given topology is a non-isolated half-bridge BDC topology and it is designed by the combination of boost converter connected antiparallel with buck converter [22], [23]. This topology is simple and has greater efficiency [24].…”

Section: Bidirectional Buck-boost Convertermentioning

confidence: 99%

Bidirectional dc to dc Converters: An Overview of Various Topologies, Switching Schemes and Control Techniques

Ravi¹,

Reddy²,

S.L³

et al. 2018

IJET

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Bidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy system for continuous flow of power because the output of the renewable energy system fluctuates due to change in weather conditions. In electric vehicles also, bidirectional converter is used between energy source and motor for power supply from battery to motor. Thus, bidirectional dc to dc converters are getting more and more attention in academic research and in industrial applications. Bidirectional dc to dc converters work in both buck and boost mode and can manage the flow of power in both the direction between two dc sources and load by using specific switching scheme and phase shifted control strategy and hence generated excess energy can be stored in batteries/super capacitors. Therefore, the basic knowledge and classification of bidirectional dc to dc converters on the basis of galvanic isolation, the comparison between their voltage conversion ratio and output current ripple along with various topologies researched in recent years are presented in this paper. Finally, zero current and zero voltage soft switching schemes and phase shifted controlling techniques are also highlighted.

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“…Moreover, the resulting three-level voltage waveform reduces the input current harmonics and dv/dt. In [14], a 30 kW EV charger prototype with an NPC front-end achieves low total harmonic distortion (THD) input current with the leakage inductance of input transformer serving as the ac side filter. Another advantage of using NPC converter as the AC/DC front-end is that it explicitly creates a bipolar dc bus [15].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a Constant Current Constant Voltage Fast Battery Charger for Electric Vehicles

Nasir¹

2021

Proceedings of ‏The 4th International Conference on Modern Research in Science, Engineering and Technology

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The issue of zero-emission mobility is one of the most topical, the electric vehicle market being in a continuous growth, which led to the development of new charging technologies. Unfortunately, limiting the autonomy of vehicles is a major problem, which can be solved, in a first phase, by developing fast charging technologies and developing an adequate infrastructure to serve the end user. This article comes in support of those mentioned, highlighting the limitations of the existing methods and proposing the design and development of a closed-loop DC-DC buck converter based battery charger for charging a plug-in electric vehicle using the constant-current and constant-voltage (CCCV) charging scheme. The motivation that led to the approach of this topic is presented in the introductory part, with emphasis on the extreme phenomena resulting from global warming, with direct involvement of the factors that lead to the burning and consumption of fossil fuels. The second chapter, very detailed and comprehensive, is dedicated to Three-phase Controlled Rectifier, starting with topologies, deepening the mathematical model, adopting the Voltage Oriented Control (VOC) strategy to control the three phase rectifier based on high performance direct-quadrature-coordinate controllers, ending with overall rectifier simulation, using MatLAB Simulink. The third chapter actually presents the simulation part, with emphasis on the related diagrams, presentation of parameters, highlighting the battery charge controller for CCCV charging and presentation of the final results. The final part is dedicated to the practical application itself, comprehensive and clear, as well as the whole work.

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A design and control of bi-directional non-isolated DC-DC converter for rapid electric vehicle charging system

Cited by 48 publications

References 12 publications

A High-Power DC-DC Converter Topology for Battery Charging Applications

A High-Power DC-DC Converter Topology for Battery Charging Applications

Bidirectional dc to dc Converters: An Overview of Various Topologies, Switching Schemes and Control Techniques

Design and Development of a Constant Current Constant Voltage Fast Battery Charger for Electric Vehicles

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