Design of a bidirectional power interface for V2G technology with smaller DC-link capacitance

Jia, Zirui; Chen, Liyuan

doi:10.12720/sgce.3.1.104-110

Cited by 3 publications

(3 citation statements)

References 8 publications

(8 reference statements)

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“…V α and V β are the stationary αβ frame quantities and V d and V q are the synchronous d − q frame quantities. The synchronization or phase locking of this system is realized by controlling the q-axis voltage to zero [7,8]. Realizing the bi-directional flow of power from the three-phase converter to battery and vice-versa, the intermediate stage of dc − dc conversion between battery and three phase power converter is of utmost importance.…”

Section: Vehicle-grid Interface Building Blocksmentioning

confidence: 99%

“…In addition to this, the V2G can also help in acting as a shunt-connected power stability device and also as a peak-shaving power source for the grid during the time of higher demand on the grid [5]. The grid can benefit from the auxiliary services that V2G-capable EVs can offer, like frequency regulation, voltage support, and grid stability [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Real-time hardware-in-loop system based validation of vehicle-grid interface for bidirectional power flow control

Sant,

P. N.

2024

TESEA

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In the context of modern sustainable transportation technology, the terms Vehicle-to-Grid (V2G) and Grid-to-Vehicle (G2V) holds significant value. During V2G and G2V modes, vehicle and grid exchange power using various power converters to modulate the power for a sustainable electrical energy ecosystem. With V2G, the EVs can also perform the role of a peak power contributor, reserve power source, and an efficient system to improve power quality issues by working as power factor corrector, reactive power compensator, and active power filter, to name a few during the V2G mode. The on-board power converter in the vehicle, working as the charger for the battery, is the component required to facilitate the intended bidirectional power exchange between the vehicle and grid and also modulates the power as and when required. The modality for operating the onboard charger as a power exchange tool depends on the type of control strategy adopted as well as on the battery and grid parameters. In this paper, a bidirectional power converter (on-board converter) is introduced, which is controlled by adopting a d-q axis-based control strategy. The MATLAB/SIMULINK-based system simulation model is created, and the Hardware-in-Loop (HIL) tool Opal-RT 4510 is used to validate the simulation results on the intended hardware and real-time scenario. The control strategy, when integrated with the adopted model, contributes to enhancing the power-transferring capability of the converter, which is assessed using the simulation and subsequent HIL-based implementation. The paper also focuses on narrating the steps to implement the vehicle-grid interface using HIL and forming a generic reference model for a bidirectional power flow converter, such that it can be used for other circuits and its implementation in real-time scenarios.

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Section: Vehicle-grid Interface Building Blocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Real-time hardware-in-loop system based validation of vehicle-grid interface for bidirectional power flow control

Sant,

P. N.

2024

TESEA

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“…The energy transfer leakage inductor L1 is used as the main energy storage and transfer element between the two bridges [27], [28]. For a battery charging application, a DAB converter can operate as a buck converter to transform the bus voltage to charge the battery and on the contrary, operate as a boost converter transforming the battery voltage to the bus voltage when discharging [29]. The amount of power being transferred PD and the direction of the current is determined by the phase shift d between the primary V1 and secondary V2 voltages.…”

Section: The Fast DC Charger Specificationsmentioning

confidence: 99%

Comparison of SiC-based DC-DC modular converters for EV fast DC chargers

Alharbi

Dahidah

Pickert

et al. 2019

2019 IEEE International Conference on Industrial Technology (ICIT)

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This paper introduces a level 3 charging system which aims to reduce the charging time to less than 15 minutes with 350 kW charging power. Two architectures of a fast charging station based on the isolation requirement through low and high-frequency transformers are introduced and discussed. Focusing on the DC-DC charging stage, this paper also provides a detailed comparison of the Dual Active Bridge (DAB) converter and the Interleaved Buck Converter (IBC), which are considered as two of the most suitable converters that can serve as a fast DC charger. Technical evaluation and comparison based on different performance indices such as volume, efficiency, number of components etc. as well as simulation of the two converters are presented. Finally, comparison results are introduced and a final discussion and conclusion are presented on which topology seems more optimum to be used as a fast DC charger. Control complexitySimple Simple Volume and size Heavy LightEfficiency 97.7% 99.2%

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Mitigation of Distribution Transformer Overloading with Rolling-Horizon Optimization of Vehicle-to-Grid Resource

Xia,

Hong,

Sun

et al. 2024

2024 3rd Conference on Fully Actuated System Theory and Applications (FASTA)

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Design of a bidirectional power interface for V2G technology with smaller DC-link capacitance

Cited by 3 publications

References 8 publications

Real-time hardware-in-loop system based validation of vehicle-grid interface for bidirectional power flow control

Real-time hardware-in-loop system based validation of vehicle-grid interface for bidirectional power flow control

Comparison of SiC-based DC-DC modular converters for EV fast DC chargers

Mitigation of Distribution Transformer Overloading with Rolling-Horizon Optimization of Vehicle-to-Grid Resource

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