Issue link: https://resources.randsim.com/i/1512035
Powertrain Electric| Power Electronics Thermal Management of an EV/HEV Inverter • High-fidelity Physics: Virtual design process to characterize EV/HEV thermal behavior using a combination of 3D models, corresponding reduced order models (ROMs), and electric system models (Icepak, TwinBuilder). • Reduced order Model: ROM provides the EV/HEV Inverter's transient thermal behavior in seconds, for any power input, compared to hours or days with full fidelity (CFD) model (Icepak). • Platform and Workflow: Unified platform for 3D and system thermal modeling, with built in toolkits supporting thermal ROM workflow automation (Ansys Electronics Desktop Tool). • Ensure thermal integrity of electric vehicle/hybrid electric vehicle (EV/HEV) power electronics system as the inverter's thermal dissipation increases with higher power ratings. • Achieve accelerated product design and validation, as full fidelity transient thermal computational fluid dynamics (CFD) modeling can be a design bottleneck • 1,000-100,000x speed improvement with ROM compared to CFD, per core, for transient thermal modeling. • Ability to embed EV/HEV Inverter thermal ROM in system model to account for drive cycle thermal loading. • One-time thermal characterization of EV/HEV Inverter with simulation leads to reduced engineering expenses, enabling more design variation studies and faster product development. Inverter power inputs (top) and temperature response of ROM and Icepak CFD (bottom) Inverter thermal ROM model 3D thermal analysis provides high fidelity but at a high computational cost Reduced order model matches 3D thermal model nearly exactly Engineering Goals Benefits Solution