Breaking the Barrier for High-Speed in the Interior Permanent Magnet Machine-Slides

Abstract: The permanent magnet machines are increasingly used in many emerging applications because of high efficiency and better dynamics, which is pushing the boundary and power of such machines. The applications such as more-electric aircraft and ships, flywheel energy storage, turbo-compressors in automotive applications, and numerous other direct-drive, high-speed industrial applications require simultaneously achieving both high-speed and high-power. Two performance indices rpm kW and tip speed – are often used to quantify the challenges of designing a rotating machine with high speed and power. The interior permanent magnet machine has the lowest rpm kW index indicating greater challenges for this type of machine when designed for high-speed applications. The talk will critically examine the barrier to achieve high-speed in the Interior-type PM machine and the methods to overcome them.