Research Review: Novel Composite Rotor Sleeve for Enhanced eMotor Power Density

Increasing the spin speed of the electric machine is widely believed to be one of the most attractive ways to improve power density, with the goal of increasing efficiency and therefore the range of electric vehicles without increasing the size, cost and mass of the battery pack. The challenge is to develop high-speed machines that meet automotive durability requirements and can be manufactured in high volumes, at a price that is commercially attractive.

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