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Design of High-Speed Direct-Connected Permanent-Magnet Motors and Generators for the Petrochemical Industry

This paper reexamines some of the usual assumptions in deploying synchronous machines in multi-megawatt high-speed applications. A viable design that can operate at common gas turbine speeds and power ratings is presented with a focus on rotor capability and cooling system performance. The models used in the analysis are validated using test data from a similar topology machine with a higher operating speed but lower power as well as a prototype machine built based on the design presented.