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AC-DC PFC-CUK FED One-Switch Resonant Converter with BMS for E-Bike Battery Charging System

Nowadays, electric bikes are substituting conventional bikes due to economic and environmental advantages. This paper presents an improved converter for battery charging of E-bikes. PFC-CUK converter is used as primary stage to achieve near unity power factor (UPF). In the secondary stage, efficient one-switch resonant converter is utilized. The second stage converter process the power with the help of resonance circuit formed by leakage inductor and capacitor. The detailed operation of the proposed topology is explained followed by the simulation results. A lithium-ion battery pack of 36V, 7650 mAh is charged by incorporating different protection schemes. Simulation results evident that the proposed converter provides near UPF and reduced THD of 4.28%, which is below IEEE standard limit of 5%.