Parameter matching and control strategies of dual-planetary gear power coupling systems
Aiming at improving the power efficiency of hybrid commercial vehicles,a dual-planetary gear power coupling system was designed.Taking the minimum fuel consumption as the optimization objective,the whole vehicle model was established,and the power components selection and parameters matching were conducted.The torque-based logic threshold control strategy was adopted to obtain the optimal torque distribution of the power source,and a joint simulation environment of AVL-Cruise and MATLAB/Simulink was established to carry out the simulation of power performance and energy economy.The simulation results show that,under the NEDC condition,compared with the original vehicle,the 100 km fuel consumption and 0 km/h to 100 km/h acceleration time decreased by 26.1% and 7%,respectively.While the maximum speed and maximum gradeability increased by 19.5% and 15.4%,respectively.Thus,the power and economical performance of the whole vehicle were significantly improved.
hybrid commercial vehiclesdual-planetary gear power coupling systemparameter matchingtorque distribution
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