부산대학교 도서관

A single-stage bidirectional electric vehicle (EV) battery charger with a capability to charge a battery from the universal AC mains, is presented in this work. Notably, a bridgeless bidirectional Cuk converter with a switched inductor is designed for this application to keep component count of the battery charger low. In addition, the advantages of developed EV charger are capabilities to regulate the battery current and enhanced grid side performance with reduced component count in bidirectional operation. Furthermore, the bidirectional operation capability of presented EV charger facilitates the user to utilize the vehicle battery as a backup power for local loads, i.e., vehicle-to-load (V2L) operation, during the unavailability of grid power. An experimental analysis is carried out to investigate steady-state and dynamic performances of the designed EV charger in distinct operating circumstances during EV charging and V2L operations. At last, efficacious operation of the developed charger to comply with the IEC 61000-3-2 standard for power quality is discussed.