A Modelica Library for Modelling of Electrified Powertrain Digital Twins

Abstract

In this paper, a Modelica library of electrified powertrain components is presented and its applications discussed. This library is used to construct digital twins of electrified powertrains during product development. These digital twins provide value by reducing development time and cost, while once the product is in-service, they enable improved condition monitoring. The library includes a multi-fidelity and multi-scale battery and power electronics sub-library, an Electrical Drive Unit (EDU) sub-library modelling different types of electrical machines, and an electrified propulsion system sub-library of template models that leverage the battery, power electronics and EDU components found in the other sublibraries. Finally, an example of applying the proposed library to electrified vehicle development is presented.

Multi-Domain Modeling and Analysis of Marine Steam Power System Based on Digital Twin

“…Ryan put forward a model-driven method for the online monitoring and predictive maintenance of automobile braking system, established digital twin models of its key components using Ansys and the Modelica language, analyzed the signal response of the braking system under gear/mechanical failure, and laid a foundation for the subsequent diagnosis and prediction of the braking system [8]. Fotias developed the model library of an electrical power system based on the Modelica language, which includes a multi-fidelity, multi-scale battery, power electronics and an electrical propulsion system sub-library, and used this library to build the digital twin model of an electrical power system in the process of product development, aiming to reduce development costs and carry out status monitoring [9]. Zhou pointed out that the satellite communication station is a typical multi-disciplinary physical system, which is composed of six systems, including the antenna system, receiving system, transmitting system, communication system, control system and power supply system, through the demand analysis of the digital twin construction of satellite earth stations; the method of building a digital twin system of satellite communication equipment using MWorks multidomain system modeling platform is proposed.…”