Analysing the Performance of a High-Speed Solid Rotor Induction Machine with Copper Coating

Abstract

Performance requirements for electrical machines have increased as a result of sustainability and reliability demands, leading to more power dense machines. One way to address this need for improved performance is by utilizing emerging materials. By taking advantage of new technologies, it is possible to utilize different materials to enhance the capabilities of electrical machines. In this study, the performance of a 12 kW high-speed solid rotor induction machine (SRIM) is improved by a copper coating on the rotor surface. The results demonstrate that incorporating a thin copper coating leads to improvements in electromagnetic torque, ranging from 54% to 82%, across various operating conditions. Torque generation capability and rotor losses are investigated through finite element analysis and verified by experimental test of a prototype.