A DC-DC multiport convertor with bidirectional energy exchange capability

One of the most important obstacles of the Electric Vehicles (EVs) is low energy storage capability. Due to recent development of energy storage technologies, the energy storage capability of the EVs has significantly improved, which makes them ideal for having a significant contribution in smart grids. It is expected that dramatic increase in the employed EVs in the future power networks introduce essential challenges. On the other hand, large energy storage capability of EVs could also be utilized for handling more proficient contribution of the network components. Therefore, more efficient converters are necessary for the EVs in order to realize bidirectional interaction of them. In this paper, a Multi-Stack Battery Configuration (MSBC) with bi-directional energy exchange capability is developed. Each battery stack could be charged or discharged by the other battery stacks or the grid and vice versa. The proposed configuration has no limitation for number of the input/output ports. Also, in the developed structure, each port could have interaction with any number of available ports. In addition, the proposed structure has energy management capability and contribution of each battery in the consumed energy can be controlled, separately. The performance of the developed configuration is verified through simulations