Can a bi-directional battery charging and discharging converter interact with the grid?

Abstract. This paper presents the design and simulation of a bi-directional battery charging and discharging converter capable of interacting with the grid.

Are bidirectional power converters the future of EV batteries?

In recent times, there has been a notable surge in interest towards bidirectional power flow between the grid and EV batteries. Bidirectional converters stand as the fundamental technology, empowering vehicles to transform into dynamic mobile energy storage systems.

What is the difference between charging mode and discharging mode?

During charging mode, the DC link operates as an input for the bidirectional converter, and the EV battery is connected as the load on the output side. This configuration allows the converter to operate in a buck mode. Conversely, in the discharging mode, the converter bridges the connection between the DC link and the battery.

What is a bidirectional EV converter?

As the interface between an electric vehicle and a utility grid, the bidirectional converter is required to meet essential criteria from both the vehicle and grid. Fig.1 illustrates all the stages used to convert power from the grid to the EVs and back. Fig. 1. Bi-directional EV Battery Charging/Discharging structure

What are the simulation parameters for a bi-directional charger?

The simulation parameters for the proposed bi-directional charger are detailed in Table 3. For testing purposes, a battery nominal voltage of 160 V and a DC link voltage of 400 V are selected in this study. In addition, the design guideline and the system parameters used for simulation are presented in Table 1. Table 1.

How does a bidirectional AC-DC converter work?

First the bidirectional AC-DC converter operates in two modes, namely as front-end rectifier when power transfer is from the single-phase grid to the EV battery, and it works as a voltage source inverter while the EV battery is pushing back power to the source .