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Power Electronics for Hybrid Electric Vehicles element or CFD models also yields benefi ts in other applications, such as modeling the electrothermal performance of battery systems, incorporating mechanical components from fi nite element analysis and including frequency-dependent magnetic models in the system simulation. Parasitic extraction of impedances (R, L, C, G) of printed circuit boards, cables and bus bars is also important. Tools should provide a streamlined method for extracting these impedances as a function of frequency and including them in a system analysis, for example, or studying high-fre- quency power and signal integrity of circuit boards. Such capabilities are instrumental in addressing the design of circuit layouts, DC bus structures, IGBT power module structures, and interconnection of variable frequency drives and grounding structures. Using these calculated impedances in power electronic system simulations can help designers to increase power ratings and reduce or eliminate the use of snubber circuits. Furthermore, this allows the simulation to address the conducted or radiated emissions of the system and to simulate methods for meeting EMI specifi cations and increasing overall power quality. In addition, a coupling functionality is essential to allow designers to include the detailed electromagnetic performance of transformers, inductors and electric machines into their system simulations. Finally, a fl exible platform provides users with a schematic view of the entire simulation. Benefi ts include incorporating requirements and specifi cations of diff erent system architectures and system performance when using diff erent components. Whether the challenge is to develop an electric propulsion system, inte- grate an electric drive with a motor, or create a new alternative energy system, simulation technology is essential to virtually explore every aspect of the design — and to deliver it quickly, accurately and under budget. ANSYS, Inc. is one of the world's leading engineering simulation software providers. Its technology has enabled customers to predict with accuracy that their product designs will thrive in the real world. The companyoff ers a common platform of fully integrated multiphysics software tools designed to optimize product development processes for a wide range of industries, including aerospace, automotive, civil engineering, consumer products, chemical process, electronics, environmental, healthcare, marine, power, sports and others. Applied to design concept, fi nal-stage testing, validation and trouble-shooting existing designs, software from ANSYS can signifi cantly speed design and development times, reduce costs, and provide insight and understanding into product and process performance.Visit www.ansys.com for more information. ANSYS, Inc. Southpointe 275 Technology Drive Canonsburg, PA 15317 U.S.A. 724.746.3304 ansysinfo@ansys.com © 2013 ANSYS, Inc. All Rights Reserved. Figure 2. Single phase of IGBT leg showing current density

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