@article { , title = {A switched-capacitor bidirectional DC-DC converter with wide voltage gain range for electric vehicles with hybrid energy sources}, abstract = {A switched-capacitor bidirectional DC-DC converter with a high step-up/step-down voltage gain is proposed for electric vehicles (EVs) with a hybrid energy source system (HESS). The converter presented has the advantages of being a simple circuit, a reduced number of components, a wide voltage-gain range, a low voltage stress, and a common ground. In addition, the synchronous rectifiers allow zero voltage switching (ZVS) turn-on and turn-off without requiring any extra hardware, and the efficiency of the converter is improved. A 300W prototype has been developed which validates the wide voltage-gain range of this converter using a variable low-voltage side (40V-100V) and to give a constant high-voltage side (300V). The maximum efficiency of the converter is 94.45\% in step-down mode and 94.39\% in step-up mode. The experimental results also validate the feasibility and the effectiveness of the proposed topology.}, doi = {10.1109/TPEL.2017.2788436}, eissn = {1941-0107}, issn = {0885-8993}, issue = {99}, journal = {IEEE Transactions on Power Electronics}, publicationstatus = {Published}, publisher = {Institute of Electrical and Electronics Engineers}, url = {https://nottingham-repository.worktribe.com/output/902390}, volume = {PP}, keyword = {Bidirectional DC-DC converter, EVs, HESS, Switched-capacitor, Synchronous rectification, Wide voltage-gain range}, author = {Zhang, Yun and Gao, Yongpin and Zhou, Lei and Sumner, M.} }