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Actual Condition Survey and Optimized Approach of Energy Regenerative Braking Control for Electric Drive-Train Vehicles
Published September 29, 2010 by Society of Automotive Engineers of Japan in Japan
In order to improve the energy efficiency for electric drive-train vehicles such as EV, HEV and PHEV, it is necessary to optimize the regenerative braking control during deceleration of those vehicles. In this paper, regenerative braking control is estimated using commercial electric drive-train vehicles in an actual using condition. Based on these obtained data, the efficiency of a virtual vehicle, which allows 100% regenerative control, is predicted. Then, we explore the potential for the expansion of energy efficiency of electric drive-train vehicles. As a result, the layout of high efficient electric drive-train vehicle is that the regenerative motor is arranged in a front-rear wheel or a front wheel, and the mechanical brake is not used as much as possible. The regenerative efficiency of about 50% can be expected.