This work is devoted to the efficient simulation of large multi-physical networks stemming from automated modelling processes in system simulation software. The simulation of hybrid, battery and fuel cell electric vehicle applications requires the coupling of electrical, mechanical, fluid, and thermal networks. Each network is established by combining the connection structure of a graph with physical equations of elementary components and resulting in a DAE (differential algebraic equation). To speed up the simulation a non-iterative multirate time integration co-simulation method for the system of coupled DAEs is established. The power of the multirate method is shown via two representative examples of battery powered electric vehicle with a cooling system for the battery pack and a three phase inverter with a cooling system. This work is an extended version of (Kolmbauer et al. in Scientific Computing in Electrical Engineering (SCEE 2020), Springer, Cham, pp. 231–240, 2021).

中文翻译：

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Multirate DAE-simulation及其在电动汽车开发系统仿真软件中的应用

这项工作致力于对源自系统仿真软件中的自动化建模过程的大型多物理网络进行有效仿真。混合动力、电池和燃料电池电动汽车应用的仿真需要电气、机械、流体和热网络的耦合。每个网络都是通过将图的连接结构与基本组件的物理方程相结合并产生 DAE（微分代数方程）来建立的。为加快仿真速度，建立了耦合DAE系统的非迭代多速率时间积分联合仿真方法。多速率方法的威力通过两个具有电池组冷却系统的电池供电电动汽车的代表性示例和具有冷却系统的三相逆变器来展示。