14 Nov '17, 5am

Innovative Motor Designs for Electric Cars Come to Life

Innovative Motor Designs for Electric Cars Come to Life

The team investigated the nonlinearity of the steel used in electric motors, which changes the nature of high-frequency conductor losses in a slot. These losses increase at high speeds due to the increase in skin and proximity effect in the conductors; they are also affected by the temperature. Due to the geometry of the motor, some winding architectures and their conductors are more easily cooled than others. For example, the spacing of the conductors and their dimensions can affect the heat transfer in the slot. Laldin and his colleagues performed further multi­physics analysis, coupling the electromagnet­ic components with the thermal behavior to identify hotspots in the motor that could cause catastroph­ic failure. They discovered that the current density within the conductors changed significantly due to changes in flux density across the slot. They calculated the los...

Full article: https://spectrum.ieee.org/computing/software/innovative-m...

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