Electric dump trucks (EDTs) are expected to work in fast-changing conditions of torque and speed, which causes the inefficient working status of traction motors. To improve the economic performance of the dump truck, a novel integrated dual-motor transmission (IDMT) is proposed in this article. The energy consumption level of this kind of system relies on a wise energy management strategy. This article presents a dynamic power distribution strategy (DPDS) for the proposed system. By coordinating the output torque allocation of the two motors based on the efficiency map partition and optimal dynamic torque allocation ratio, the proposed strategy is more effective for real-time application compared to the previously proposed enumeration strategy. In addition, a particle swarm optimization is carried out to search for the optimal combination of the gear ratios for the selected EDT. The dynamic model of the IDMT and a detailed mathematical model of the EDT are developed to validate the performance of the proposed design and strategy. The simulation and experiment results show the energy-save and real-time ability of the developed strategy and indicate that the proposed structure can appreciably improve economic performance and enhance battery life.

中文翻译：

---

电动自卸车双电机一体化传动的配电策略开发与优化

电动自卸车（EDT）需要在扭矩和速度快速变化的条件下工作，这会导致牵引电机的低效工作状态。为了提高自卸车的经济性能，本文提出了一种新型的集成双电机变速器（IDMT）。这种系统的能耗水平取决于明智的能源管理策略。本文介绍了所提议系统的动态配电策略 (DPDS)。通过基于效率图分区和最佳动态扭矩分配比协调两个电机的输出扭矩分配，与先前提出的枚举策略相比，所提出的策略对于实时应用更有效。此外，执行粒子群优化以搜索所选 EDT 的最佳传动比组合。开发了 IDMT 的动态模型和 EDT 的详细数学模型，以验证所提出的设计和策略的性能。仿真和实验结果表明了所开发策略的节能和实时能力，表明所提出的结构可以显着提高经济性能和提高电池寿命。