High-speed electrical machines: Review of concepts and currently used solutions with synchronous machines with permanent magnets

Abstract

The subject of presented paper is review of currently used high-speed machines with focusing on synchronous machines with permanent magnets and their applications. In the paper are highlighted some special case of use these machines. There is mentioned problems with controlling of these machines and is added the description of changing the type of switching signals. Further are presented some special design arrangements and their comparison with other types of high-speed machines and mentioned their advantages and disadvantages.