Comprehensive Modeling and Analysis of Drive-cycle Performance for EV/HEV Powertrains

Abstract

The “More Electric Automobile” is continuing at an unprecedented pace, with motors, power electronics and software controls replacing formerly “all mechanical” vehicle systems. Improved fuel economy is the goal, and nowhere is this more significant than in the EV/HEV Powertrain application. For these systems, waiting until a useful physical prototype is available for testing, to verify overall performance, is unacceptable. This is because finding problems late in the program jeopardizes both budget and schedule, and because debugging these complex systems with limited visibility is a daunting task. Fortunately, virtual prototypes can be used to help make critical design decisions, size and integrate the components from various disciplines, and verify system performance prior to building it. This presentation will discuss a methodology that allows for progressive refinement of system models, from abstract to high-fidelity. It demonstrates the integration of BLDC and induction motors, digital, analog and power electronics, and vehicle mechanical dynamics (all modeled in SystemVision), with embedded control software (modeled in “C” and developed in Envisage), and a complete vehicle drive-cycle test program (modeled in LabVIEW). The ability to integrate these domain-specific models and tools is provided by SystemVision ConneXion.

Duration: 37:31