A Hierarchical V2G/G2V Energy Management System for Electric-Drive-Reconstructed Onboard Converter

Due to the popularity of plug-in electric vehicles (PEV)and the development of converter technology, the electric-drive-reconstructed onboard converter(EDROC)is widely used in the charging system which can work in vehicle to grid(V2G) mode or grid to vehicle(G2V) mode. In this article, an EDROC for V2G/G2V energy management system is proposed. The EDROC uses permanent magnet synchronous motor as a charging inductor in V2G/G2V mode without additional equipment. Meanwhile, this article proposes a hierarchical V2G/G2V energy management system and the corresponding hierarchical control strategy with the proposed EDROC. This system can realize the energy distribution between PEVs, and avoid PEV overcharging. The proposed EDROC and control strategy are verified by simulation and experiment.