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Comprehensive thermal modeling of power split hybrid power-train and electronics.

机译：功率分配混合动力总成和电子设备的综合热模型。

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摘要

Hybrid electric vehicle (HEV) uses both internal combustion engine (ICE) with an electric system. The combination of the electric power train with the ICE is intended to achieve both better fuel economies than the conventional vehicles and better performance. Several types of HEV exist with different layouts. Recent HEVs' make use of regenerative braking, which converts the vehicles' kinetic energy into electric energy instead of wasting it as heat as conventional brakes do. A hybrid-electric is more fuel efficient than ICE and has less environmental impact.;The new HEV with its new Key Characteristics and Configurations (i.e. Mechanical complexity, Multiple driving modes, Multiple prime movers, ... etc) inflict an interference with the existed thermal management system of the conventional vehicles, which leads to a new thermal management issues that should be addressed to enhance the performance of such systems. There is no complete knowledge in the open literature about the thermal management issues of HEV yet.;This dissertation introduces Comprehensive Thermal Modeling of Hybrid Vehicular systems to assist monitoring the added-on of hybrid modules into the vehicle thermal management system. The model proposes a combined experimental and finite differencing nodal net work simulation modeling approach; using Thermography detectors calibrated for emissivity to capture 2-D spatial and transient temperature measurements. The Thermographic detectors were deployed through dual band thermography to neutralize the emissivity and to provide different dynamic ranges to achieve accurate temperature measurements. A thermocouples network was installed to provide a reference signal.;A new comprehensive 3-D thermal model was developed by generating 3-D surface description for a complete hybrid electric vehicle from 3-D scans of an actual vehicle to guarantee the quality of the surface geometry, and break down the surfaces of the model into finite elements to improve the accuracy for better thermal analysis. The boundary conditions from a vehicle under different driving modes and load scenarios were deployed into the finite differencing simulation which was performed using finite differencing code capable of solving a sophisticated thermal/fluid systems with minimal user interaction (RadTherm) to provide a 3-D Thermal predictions and an Image Viewer (wireframe and animated thermal display).;The 3-D model assisted monitoring the adding of Hybrid modules into the vehicle thermal management system and was used to analyze packaging considerations and integrating different modules for Hybrid Vehicles. In addition to the design of alternative materials for hybrid modules and Battery Packs for better thermal management; the model assisted studying the influence of applying different cooling methodologies and evaluate its effect on the thermal performance of the HEVs' power trains. A spatial and a transient temperature profiles obtained from the simulation for different components were compared with experimental results in order to validate the complete thermal model.;Keywords: Hybrid electric vehicles, Power train, Power split, Battery packs, Power electronics, Drive cycles, Thermal management, Thermal modeling.
机译：混合动力电动汽车（HEV）同时使用带有电气系统的内燃机（ICE）。动力传动系与ICE的结合旨在实现比传统车辆更好的燃油经济性和更好的性能。存在几种具有不同布局的HEV。最近的混合动力汽车利用再生制动，这种制动将车辆的动能转化为电能，而不是像传统制动器那样浪费热量。混合动力汽车比ICE更加省油，对环境的影响也较小。具有新的关键特性和配置（即机械复杂性，多种驾驶模式，多种原动机等）的新型混合动力汽车会对混合动力汽车造成干扰。现有常规车辆的热管理系统，这导致了新的热管理问题，应解决这些问题以增强此类系统的性能。混合动力汽车的热管理问题在公开文献中还没有完全的知识。；本文介绍了混合动力汽车系统的综合热建模，以协助监视混合模块在车辆热管理系统中的附加功能。该模型提出了一种结合实验和有限差分节点网络仿真模型的方法。使用已针对发射率进行校准的热成像检测器，以捕获二维空间和瞬态温度测量值。通过双波段热成像仪来部署热像仪探测器，以抵消发射率并提供不同的动态范围，以实现准确的温度测量。安装了一个热电偶网络以提供参考信号。通过从实际车辆的3D扫描生成完整的混合动力电动汽车的3D表面描述，开发了一个新的综合3D热模型，以确保其质量。表面几何形状，并将模型的表面分解为有限元，以提高精度以进行更好的热分析。将车辆在不同驾驶模式和负载情况下的边界条件部署到有限差分仿真中，该有限差分仿真是使用有限差分代码执行的，该代码能够以最少的用户交互（RadTherm）解决复杂的热/流体系统，从而提供3-D热预测和图像查看器（线框和动画热力显示）。3-D模型辅助监视混合动力模块到车辆热管理系统中的添加，并用于分析包装注意事项和集成混合动力车辆的不同模块。除了设计用于混合动力模块和电池组的替代材料以实现更好的热管理外；该模型有助于研究采用不同冷却方法的影响，并评估其对混合动力汽车动力总成热性能的影响。为了验证完整的热模型，将通过仿真获得的不同组件的空间和瞬态温度曲线与实验结果进行了比较。关键字：混合动力电动汽车，动力总成，功率分配，电池组，电力电子设备，驱动周期，热管理，热建模。

著录项

  • 作者

    Mayyas, Abdel Ra'ouf.;

  • 作者单位

    Clemson University.;

  • 授予单位 Clemson University.;
  • 学科 Engineering Automotive.;Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 220 p.
  • 总页数 220
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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