Integration of electric vehicle with smart grid using bidirectional SEPIC-zeta converter

The escalating worldwide power demand necessitates innovative solutions to address the emerging power crisis. Grid-synchronized electric vehicles (EVs) have emerged as a promising avenue for mitigating this crisis. The vehicle-to-grid technology is unique advanced smart grid concept by which the exchange of energy is allowed among grid and EV. The integration of EV and grid affects an entire power system causing imbalance in supply-demand, voltage and frequency. To minimize these issues, feasible optimization techniques are introduced in this paper. Lithium-ion batteries are initially charged via smart homes, and convolutional neural networks (CNN) are used to ascertain a battery's state of charge (SOC). A bidirectional SEPIC-zeta converter is employed in this paper by which voltage is either increased or decreased. The gating sequence for the converter is generated by means of adaptive neuro fuzzy inference system which depends on an estimated SOC. If the SOC is greater than 80%, battery is discharged using a SEPIC mode; if the SOC is lower than 80%, battery is charged by grid using the ZETA mode. By using a PI controller, active and reactive power are also controlled. Simulation results using MATLAB showcase the efficacy of the suggested approach. The bidirectional SEPIC-Zeta converter exhibits an impressive efficiency of 96% and a voltage gain ratio of 1:8 when compared to other converters. CNN-based SOC tracking achieves remarkable tracking efficiency of 92.3%, outperforming other tracking methods. The grid current total harmonic distortion is notably curtailed at 2.3%, and a power factor of 0.9 is achieved using PI-based grid synchronization.

Automated summary

The escalating power demand worldwide has led to the emergence of a power crisis. Vehicle-to-grid technology offers a promising solution to mitigate this crisis. This paper presents a bidirectional SEPIC-Zeta converter and optimization techniques to address the challenges of integrating electric vehicles with the power grid.