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Due to the limitation of battery capacity, the electric vehicle has maximum distance traveled that depends only on the battery size, Thus. The paper presents a bi-directional DC to DC boost converter circuit that can rechargeable batteries. The operation has divided into two modes is operate in driving mode, and operate in power return mode or regenerative mode . The research has design for lightweight vehicles, thus. the 1 cell power source 12 volt battery is selected for boost voltage to 48 volt. The output voltage supply to H-bridge inverter and to drive 48 volt permanent magnet DC motors. In this research use the computer program MATLAB/Simulink for simulate the operation of the entire system. The simulation result show that the ripple current not exceed 1 amp, the ripple voltage not exceed 1 volt and the duty cycle is 75% as designed. The proposed system can operation in both modes, especially in regenerative mode, the maximum regenerative power is 35 kilowatts.
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