Abstract
With the development of electric vehicles, dual-motor transmission has become a potential alternative for automated manual transmission (AMT) due to the solution of power interruption and the improvement of energy efficiency. In this paper, a novel electric dual-motor transmission (eDMTP) for heavy commercial vehicles is proposed. Then, a 4-layer energy management strategy is developed to optimize dynamics performance and energy efficiency. Subsequently, a real vehicle operation is performed to validate the control strategy and the performance of eDMTP. The results demonstrate that the operating points of the two motors are both in and around the high-efficiency area under normal mode. This research lays the foundation for the development of a pure electric vehicle transmission system.
Highlights
The issue of commercial vehicle emission has been the focus of attention in the transportation field because of the high proportion of carbon dioxide and nitrogen oxides
In order to verify the performance of eDMTP and energy management stra mining vehicle equipped with eDMTP and typical real operation environment are se the input conditions for verification (Figure 5)
This study proposes a new dual-motor transmission for heavy commercial vehicles
Summary
The issue of commercial vehicle emission has been the focus of attention in the transportation field because of the high proportion of carbon dioxide and nitrogen oxides. Zhang et al [11] used electromechanical coupling control to realize the dynamic coupling of the distributed drive system, which enhanced the high-speed stability of the vehicle, and coordinated the torque output of the drive system, thereby suppressing the driving torque fluctuation and reducing the work intensity of the motor and the controller They proposed a staged multivariable combined control method and reduced the shock generated by the mode switching to below 10 m/s3 [12]. To address the problem of power interruption and further improve the energy-saving effect of vehicles, a new electric dual-motor transmission (eDMTP) is proposed in this work for heavy commercial vehicles. Perspective of system control, the energy management strategy of eDMTP consists two 4-0 separately layers, namely driverStrategy torque demand, operating mode decision, optimal torque sp
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