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Hybrid Electric Powertrain
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Catalog excerpts

Hybrid Electric Powertrain - 1

Hybrid Electric Powertrain Because the electric powertrain is new and revolutionary technology, automotive industry engineers face the challenge of designing affordable, efficient, stable and reliable hybrid electric powertrain technologies almost entirely from scratch — and in an incredibly compressed time frame. Engineering simulation helps to expedite and improve electric powertrain development, providing in-depth insights into complex components and systems that guide development through virtual prototyping and testing. Simulation software from ANSYS allows engineers to understand how a design performs under various real-life conditions even before prototyping takes place. Such usage of CAE may well separate the visionaries from the also-rans in the race to replace conventional powertrain technology. Highly complex, electric vehicle (EV) and hybrid-electric vehicle (HEV) powertrains and their subsystems and components must work together in a coherent , tightly coupled way to maximize vehicle efficiency and performance. Industry Solutions Battery • Electrochemistry and cell design • Battery thermal management: temperature uniformity, cold/hot start/stop • Battery mechanical abuse: crash, crush, nail penetration • Battery electrical abuse: overcharging/discharging, high current charging/discharging, external short • NVH: flow noise, structural vibration • Structural durability Power Electronics • Cooling: developing dissipation paths for heat from electrical losses • Control logic: for optimizing electric powertrain components and system under all driving conditions Electric Traction Motors and Generators • Optimizing magnetics design: speed, torque, losses • Thermal management: accurate loss mapping • Vibration: reducing motor noise • System integration: optimizing motor and controls together • Structural durability Generator image courtesy Kato Engineering. EMI/EMC • Upfront EMI/EMC analysis prior to prototype creation • Reduced need for EMI/EMC testing • Motor, busbars, board-level EMI/EMC The electric powertrain can be accurately simulated only with an integrated simulation platform. This allows developers to evaluate the individual components and subsystems as well as the interactions between them at the system level. Since components are subjected to multiple physics in the real world, simulation tools must accurately

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Hybrid Electric Powertrain - 2

Hybrid Electric Powertrain including structural mechanics, explicit dynamics, fluid dynamics, thermal physics, magnetics, electrochemistry, electromagnetic radiation and conductance (EMI/EMC). Innovative powertrain design also must include converting detailed component models into reduced-order models and connecting them to create circuit- and system-level models, which can then be used to optimize a subsystem or the entire electric powertrain. Battery Optimization ANSYS software performing 3-D electromagnetic simulation of an electric motor The performance of a battery pack depends on...

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