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Electric machines are being used in more and novel applications through the world driven by the need for greater power efficiency in the transportation, aerospace and defense and industrial automation markets. The electric machine is a very complex device being multi-domain by nature involving electromagnetics, thermal and mechanical effects. In the face of global competition, electric machine manufacturers, like manufacturers in most industries, are searching for ways to reduce cost, optimize designs and deliver them quickly to market.
Several calculation techniques are available to predict electric machine performance, including classical closed form analytical analysis, lumped parameter models based on the determination of detailed parameters from finite element analysis, and nonlinear time-domain finite element analysis. The fundamental issue is the trade-off among model complexity, accuracy and computing time. Engineers use a combination of these calculation techniques as the optimal solution to simulate electric machine performance.
ANSYS, Inc. and its partner Motor Design Ltd., based in the United Kingdom, recently collaborated to build an innovative new design flow that leverages ANSYS expertise in magnetic sizing of electric machines with Motor Design’s expertise in thermal sizing. The result is a unique electric machine design solution that creates a new level of ease and accuracy for creating virtual prototypes for electric machines.