A recent study led by V. Ramya from the School of Electrical Engineering at Vellore Institute of Technology has introduced an innovative solution to enhance the efficiency of electric vehicle (EV) charging infrastructure. Published in the journal ‘IEEE Access,’ the research focuses on a novel multi-input mode selection converter (MI-MSC) designed to address the increasing power demands of DC fast chargers.
As the electric vehicle market continues to grow rapidly, the need for robust and efficient charging systems becomes crucial. The MI-MSC integrates both the AC grid and an auxiliary battery as input sources, enabling it to deliver a constant current of 15A. This capability is particularly significant for hybrid energy applications, especially in the context of fast-charging electric vehicles. The use of up to five switches allows for precise control over the power flow between these input ports, ensuring that the system can adapt to varying energy demands efficiently.
The research also incorporates advanced technology through the use of a fuzzy logic controller, which optimizes the charging process by maintaining a constant current while simultaneously performing power factor correction. This dual functionality not only enhances the charging efficiency but also contributes to reducing energy waste, which is vital for the sustainability of energy systems.
To validate the performance of the MI-MSC, the researchers employed real-time hardware in-loop (HIL) testing using the OPAL-RT 5700 system. The results demonstrated that the converter effectively meets the load demands across different scenarios while managing power efficiently and maintaining acceptable levels of total harmonic distortion (THD).
This development has significant commercial implications for the energy sector. As electric vehicles become more prevalent, the demand for efficient charging solutions will only increase. The MI-MSC could potentially lower operational costs for charging station operators by improving energy efficiency and reducing the infrastructure required for power delivery. Additionally, the ability to switch between different input modes allows for greater flexibility in energy sourcing, which could lead to cost savings and increased reliability in charging services.
V. Ramya states, “The multi-input mode selection converter is a step towards addressing the challenges faced by fast-charging systems in electric vehicles. Our approach not only improves efficiency but also supports the growing need for sustainable energy solutions.”
This research highlights the importance of innovation in the energy sector, particularly as the world moves towards electrification and renewable energy sources. The findings from this study could pave the way for more efficient charging technologies, ultimately supporting the broader adoption of electric vehicles and contributing to a cleaner transportation future.