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The dual-motor drive system for electric vehicles is researched, which comprises two drive motors and coupling device. The dual-motor together provide power for the vehicle while the vehicle travels at a cruising speed or high constant speed. The main drive motor provides power to the vehicle during periods of peak torque demand such as vehicle acceleration or climbing. Taking 18t electric bus as...
In this paper, a new way of voltage transform is designed. It directly transforms the voltage of the PWM (Pulse Width Modulation) waves whose fundamental wave is sine wave. As the fundamental wave is sine wave with 50Hz, it uses the common cold-rolled silicon steel as transformer core, which significantly reduces the cost of the voltage conversion device and improves the reliability of the voltage...
To eliminate the deficiencies in the conventional drive control system of direct current (DC) motor for electric vehicle, we design a new permanent magnetic direct current (PMDC) motor with the enhanced exciting windings, namely, enhanced magnetism motor and develop its drive control system for electric transit bus. It can obtain enhanced torque with enhancing magnetism in low speed and enhanced speed...
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