Rapid Configuration Design of Multiple-Planetary-Gear Power-Split Hybrid Powertrain via Mode Combination
Rapid Configuration Design of Multiple-Planetary-Gear Power-Split Hybrid Powertrain via Mode Combination
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DOI：
10.1109/tmech.2016.2575359
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发表时间：
2016-12
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影响因子：
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通讯作者：
Weichao Zhuang;Xiaowu Zhang;H. Peng;Liangmo Wang
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文献类型：
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作者：
Weichao Zhuang;Xiaowu Zhang;H. Peng;Liangmo Wang
混合动力总成技术必须在不久的将来应用于运动型多用途车（SUV）和轻型卡车（LT），以满足新的企业平均燃油经济性标准。对于 SUV 和 LT，使用多个行星齿轮 (PG) 的多模式混合动力系统有助于提供所需的扭矩，同时实现更好的燃油经济性。与单、双PG系统相比，三PG系统可以提供更多的设计灵活性。然而，由于设计空间巨大，使用穷举搜索方法搜索所有可能的三PG设计是不切实际的。本文提出了一种快速结构优化方法。首先通过归一化效率分析和最大输出扭矩分析确定节油（FS）模式和高启动性能（HLP）模式。然后，定义约束优化问题来限制候选模式（FS 和 HLP 模式）。采用这种方法，设计空间减少了 1000 倍。通过使用设计扩展技术，从具有较少离合器（一个或两个）的设计中获得三个离合器设计。最后，一个案例研究展示了如何将所提出的方法应用于三PG混合体的优化设计。
Hybrid powertrain technologies must be applied to sports utility vehicles (SUV) and light trucks (LT) in the near future to meet the new corporate average fuel economy standards. For SUV and LT, multimode hybrid powertrains using multiple planetary gears (PGs) help to deliver the required torque while achieving better fuel economy. Compared with single and double PG systems, three-PG system can provide more design flexibility. However, it is not practical to search through all possible three-PG designs using exhaustive search methods because of the enormous size of the design space. In this paper, a rapid structure optimization method is proposed. Fuel-saving (FS) modes and high launching performance (HLP) modes are first identified through normalized efficiency analysis and maximum output torque analysis. Then, a constrained optimization problem is defined to limit the mode candidates (FS and HLP modes). Following this approach, the design space is reduced by a factor of 1000. Three clutch designs are obtained from the designs with fewer clutches (one or two) by using the design-extension technique. Finally, a case study demonstrates how the proposed method is applied to the optimal design of three-PG hybrids.