Design a Bidirectional DC/DC Converter for Second-Level Electric Vehicle Bidirectional Charger

Ammar Hatem AlMarzoogee, Alaa Hamid Mohammed

2020 4th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) · 2020 · 16 citations · 14 references

Concepts

TL;DR

Electric vehicle adoption has accelerated, with chargers playing a key role in the sector’s growth. This work proposes a bidirectional DC/DC converter for second‑level EV charging, enabling vehicle‑to‑grid power flow. The converter combines buck and boost topologies, operating in buck mode for charging and boost mode for V2G to regulate the DC‑link voltage. The design is predicted to deliver high efficiency.

Abstract

Electric Vehicle (EV) has derived into consideration within automotive manufacturing over the last centuries. The charger of EV contributes significant part in the growth of EV. This paper proposes DC/DC converter which can be integrated for application in second- level electric vehicle charging. Further, the proposed converter is bidirectional, accomplished of delivering power from batteries to the grid which called vehicle-to-grid (V2G) applications. The DC-DC converter is molded by mixing buck and boost converters and accordingly it is capable to function in buck as well as boost methods in both ways (charging and discharging). Throughout charging (G2V) the voltage (Dc-link) is stepped to down by the DC-DC converter to battery volt age and delivers requisite charging current by current control (CC).This is buck process through charging. While V2G process the role of the DC-DC converter is to boost the battery voltage to deliver the dc link voltage. The converter is predictable to get high efficiency.

References

14