Design Aspects of High-Speed Electrical Machines With Active Magnetic Bearings for Compressor Applications

Two-stage oil-free centrifugal air compressors can bring significant advantages and open new market opportunities for compressor manufacturers. One of the core technologies behind this compressor type is the high-speed electrical machine supported by active magnetic bearings. In this paper, the requ...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2017-11, Vol.64 (11), p.8427-8436
Main Authors: Uzhegov, Nikita, Smirnov, Alexander, Cheol Hoon Park, Ji Hun Ahn, Heikkinen, Janne, Pyrhonen, Juha
Format: Article
Language:English
Subjects:
AC machine
active magnetic bearing (AMB)
Air compressors
Centrifugal compressors
compressors
Cooling
Density measurement
electrical design
High speed
high-speed (HS) drive
Impellers
Induction machines
induction machines (IM)
Induction motors
Magnetic bearings
Magnetic levitation
permanent magnet (PM) machines
Permanent magnets
Rotors
Shafts
Synchronous machines
Systems design
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Summary:Two-stage oil-free centrifugal air compressors can bring significant advantages and open new market opportunities for compressor manufacturers. One of the core technologies behind this compressor type is the high-speed electrical machine supported by active magnetic bearings. In this paper, the requirements set by the compressor on the electrical machine design are presented. The design solutions aimed to satisfy these requirements are discussed. Two case studies illustrate possible design approaches for the target application with examples of a 120-kW, 60 000-r/min induction machine with a solid rotor and a 225-kW, 50 000-r/min permanent-magnet synchronous machine (PMSM) with a full cylindrical magnet. The system design and simulation results are confirmed by measurements of a PMSM prototype.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2698408