Ten years high speed motors with massive shaft - experience and outlook

This paper discuss the Asynchronous Motor High Speed Concept with massive shaft launched in 2005 after an extensive research period including field testing. This motor is now installed in power ranges between 3.5MW and 15MW and speed ranges between 13.500rpm and 4600rpm with both, Active Magnetic Bearings and Sleeve bearings. This paper will show the first time the complete range concept and the exact measured properties of this motor such as efficiency, power factor, noise date and vibration values as well as application and selection details for this High Speed Motor design. The Gearless High Speed concept offers opportunities in off shore application such as sufficient space and weight reduction for Platforms or FPSO vessels as well as advantages in reliability, availability and service compared to traditional geared solutions or turbine driven arrangements. The future design to meet these upcoming and promising applications will be discussed and introduced. This paper will continue the discussion on High Speed Motor applications in the PCIC forum and add a further step to increase possible applications in Oil & Gas.