Abstract:

Today, when the transition to electric vehicles in the automotive industry is rapidly increasing, the design subjects of the vehicle architectures that provide high energy efficiency have gained great importance. In fact, the energy consumption and recovery values that will be obtained by different vehicle architectures vary depending on the structure of this power unit. In the context of this study, the energy consumption and recovery of hydrogen-energy electric vehicles with different power transmission systems with the help of regenerative braking have been numerically studied and compared with the help of mathematical models for different architectures. First of all, the power calculation was made for the two different driving circuits given by the electric vehicle and the current values extracted from the same electric motor and obtained from the braking were calculated for wheels, one-step and two-step speeds. According to calculated current values, the fuel battery hydrogen consumption and supercapacitor charging status of all power architectures have been determined. According to the results obtained, the lowest hydrogen consumption was achieved in two-step speeds, one-step speeds and in wheels motor situations respectively. However, the best charging condition is achieved in the exact opposite case of this order. Finally, the energy consumption and recovery were also compared for different roads and the results reflected the same ranking again.

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