Abstract
High-speed electrical machines have been increasingly used in various industries, including automotive, power generation, aerospace, and more. In this review paper, we provide an overview of the technologies, trends, and developments in high-speed electrical machines. We discuss the applications of high-speed electrical machines in more electric engines, flywheel energy storage systems, high-speed spindle applications, turbo molecular pumps, gas compressor applications, industrial air compressors and air blowers, and microturbines. Furthermore, we review the materials used in high-speed electrical machines, including electrical steels, copper alloys, and permanent magnets. We also conduct a literature review on the different types of high- speed electrical machines, including induction motors, permanent magnet machines, switched reluctance machines, and synchronous homopolar machines. Finally, we benchmark the performance of high-speed machines and provide concluding remarks.
Keywords: —High-speed electrical machines, induction motors, permanent magnet machines, switched reluctance machines, synchronous homopolar machines, electrical steels, copper alloys, and permanent magnets.
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