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An electrical and mechanical design process for a traction motor in a hybrid bus application is studied. Usually, the design process of an electric machine calls for close cooperation between various engineering disciplines. Compromises may be required to satisfy the boundary conditions of electrical, thermal, and mechanical performances. From the mechanical point of view, the stress values and the...
A new concept that integrates a permanent magnet (PM) synchronous motor (PMSM) and a 2-step planetary gearbox for heavy machinery electric traction is introduced. A clear need for this kind of a solution is recognized in the field of diesel-electric hybrid off-road vehicles as electrical machine cannot fulfill alone all the demands of the typical load cycles of working machines. The technology introduced...
This study investigates the impact of transmission topology on the combined mechanical and electrical efficiency of an Electric Vehicle (EV) by comparing two types of transmissions. In an EV, due to space restrictions, a relatively high-speed electric motor is used with a reduction gear to provide adequate torque production. Since the electric motor's efficiency varies according to the amount of applied...
This study addresses the requirements of a traction motor design process. In a traction application, the design parameters are electrical, mechanical, and thermal issues, and especially, the reliability. The electrical design optimizing process of a motor takes into account the magnet shape, the magnet embedding depth, and the flux-guiding air pocket areas on the magnet sides. The application in question...
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