Using Multiphysics to Predict and Prevent EV Battery Fire

In this paper, we illustrate a simulation-driven workflow process using Altair HyperWorks Suite for antennas to meet environmental specifications during the design process so time taken for test and certification can be minimized and thus, cost savings and faster product development cycles.

In a joint project MX3D, ABB, and Altair demonstrated how a 3D printed robot can be improved by using a digital twin process to achieve more precise positioning.

In the race to deliver safe new vehicles, efficient and accurate simulation of structural performance under different crash scenarios is a key alternative costly physical testing. With growing model complexity, the demand for CPUs is increasing. To assure a fast job turnaround time, HPC and solver scalability is critical. This article shows that by working together with market-leading hardware developers to keep one step ahead of customer needs, Altair Radioss™ offers fast, efficient structural analysis irrespective of the hardware the solver is running on: scalability is proven and assured.

Today, an e-motor cannot be developed just by looking at the motor as an isolated unit; tight requirements concerning the integration into both the complete electric or hybrid drivetrain system and perceived quality must be met. Multi-disciplinary and multiphysics optimization methodologies make it possible to design an e-motor for multiple, completely different design requirements simultaneously, thus avoiding a serial development strategy, where a larger number of design iterations are necessary to fulfill all requirements and unfavorable design compromises need to be accepted.

The project described in this paper is focused on multiphysics design of an e-motor for Porsche AG. Altair’s simulation-driven approach supports the development of e-motors using a series of optimization intensive phases building on each other. This technical paper offers insights on how the advanced drivetrain development team at Porsche AG, together with Altair, has approached the challenge of improving the total design balance in e-motor development.

Thermal analysis is a key factor when designing motors. We propose to link the studies of electromagnetic and thermal aspects in transient application with Finite Element Method (FEM) to represent the thermal state of motor with higher accuracy. As electromagnetic response time is different of thermal response time, an original method is used for extracting average values on one magnetic period of losses (Joule and iron losses), and to use them as input for the transient thermal analysis. So, the temperature in different parts of the motor is extracted, and brought back as input for the next electromagnetic computation.

This paper describes the effect of air-gap variation on performance of a 28 pole axial flux permanent magnet motor (AFPM) with concentrated stator winding. The AFPM is modeled using three-dimensional finite-element method. This model includes all geometrical and physical characteristics of the machine components.

Abstract- The paper presents a FEM approach for studying the influence of the capacitor value on the magnetic noise of a network and inverter-fed permanent split-capacitor induction motor. A 4 pole, 24 stator slots and 30 rotor slots, induction motor is modeled under Flux2D Finite Element software in order to determine the amplitude and frequency spectrum of the magnetic forces acting on the stator. The effects of the inverter supply are taken into account by coupling Flux2D with Matlab/Simulink. The results are compared with those obtained from noise measurements performed on the studied motor.

Elimination of hot spots and reduction of eddy current losses in structural parts is one of the important constituents of transformer design. In this work, the eddy current losses in the clamping frame, transformer tank and electromagnetic shielding are calculated using a 3D finite element method. The clamping frame, transformer tank and electromagnetic shielding are modeled by surface impedance method. The paper analyses the effects of electromagnetic shielding and magnetic shunts on the eddy current loss reduction in the transformer tank.

This paper presents a study on the influence of the discretisation of the inductance curves on a detailed coupled circuit model of a synchronous generator with a damper winding and search coils. The self and mutual inductances of all coupled circuit are computed in magnetostatic with a 2D finite-element method (FEM) for different rotor positions.

This paper presents an adapted partial element equivalent circuit (PEEC)-based methodology applied to the modeling of interconnections of power electronics devices. Although this method is already well known, the originality of this work is its use to model a device presenting an industrial complexity.

In recent years, an innovative DC induction heating concept has been proposed in order to increase the efficiency of the induction heating of low electrical resistivity metal billets [1-3]. In this approach the billet is forced to rotate inside a transverse DC magnetic field by means of an electric motor drive

ABSTRACT. Temperature control of magnetic controllers (concentrators, cores, shields, shunts) is an essential part of the induction coil design. Prediction and study of the coil copper have been described in a presentation “Influence of Cooling Conditions on Induction Coil Copper Temperatures” (V. Nemkov, R. Goldstein) [1]. That study was made using Flux 2D computer simulation program.

In the present paper, two simulation strategies for tube induction welding process are presented. Coupled electromagnetic and thermal problem is solved by applying three-dimensional FEM models. The resulting power density and temperature distribution are compared. Reported strategies can be used to design tube induction welding devices and to verify the influence of the main parameters of the process, i.e. welding velocity, frequency, specific and total power.

Flux Conference 2012 presentation

Presented at the 2015 Flux Conference