A high-performance 640-kW 10.000-rpm Halbach-array PM slotless motor with active magnetic bearings. Part I: Preliminary and detailed design

The ongoing gas industry expansion calls for quick and strong advances in turbomachinery-coupled highspeed electric motors. Very high efficiency, dynamic performance and reliability are among the main requirements to be met at competitive costs by electric machine suppliers. This paper reports on an industrial R&D project aimed at finding the best compromise between performance targets and production cost reduction. The development of a 640-kW 10.000-rpm PM motor prototype with slotless stator and Halbach-array magnetically-levitated PM rotor is discussed, including in particular the basic technology selection and design optimization processes. In a companion paper (Part II), prototype manufacturing and testing will be reported to assess the technology and design solutions adopted.

[1]  A. Binder,et al.  Fixation of buried and surface-mounted magnets in high-speed permanent-magnet synchronous machines , 2005, IEEE Transactions on Industry Applications.

[2]  A. Tessarolo,et al.  Design and technology solutions for high-efficiency high-speed motors , 2012, 2012 XXth International Conference on Electrical Machines.

[3]  Johann W. Kolar,et al.  An Ultrahigh-Speed, Low Power Electrical Drive System , 2008, IEEE Transactions on Industrial Electronics.

[4]  Andrea Cavagnino,et al.  A General Model for Estimating the Laminated Steel Losses Under PWM Voltage Supply , 2010, IEEE Transactions on Industry Applications.

[5]  N. Bianchi,et al.  Impact of MMF Space Harmonic on Rotor Losses in Fractional-Slot Permanent-Magnet Machines , 2009, IEEE Transactions on Energy Conversion.

[6]  D.M. Saban,et al.  Design of High-Speed Direct-Connected Permanent-Magnet Motors and Generators for the Petrochemical Industry , 2007, IEEE Transactions on Industry Applications.

[7]  R.R. Neto,et al.  Some Experiences on Rigid and Flexible Rotors in Induction Motors Driving Critical Equipment in Petroleum and Chemical Plants , 2006, IEEE Transactions on Industry Applications.

[8]  Linni Jian,et al.  A Coaxial Magnetic Gear With Halbach Permanent-Magnet Arrays , 2010, IEEE Transactions on Energy Conversion.

[9]  Y. Perriard,et al.  Optimization Design of a Segmented Halbach Permanent-Magnet Motor Using an Analytical Model , 2009, IEEE transactions on magnetics.

[10]  Eduardo P. Wiechmann,et al.  On the Efficiency of Voltage Source and Current Source Inverters for High-Power Drives , 2008, IEEE Transactions on Industrial Electronics.

[11]  A. Tessarolo,et al.  Time-stepping finite-element analysis of a dual three-phase salient-pole synchronous motor under voltage-source supply , 2010, 2010 IEEE International Symposium on Industrial Electronics.

[12]  A Tessarolo,et al.  Design and testing of a 45-MW 100-Hz quadruple-star synchronous motor for a Liquefied Natural Gas turbo-compressor drive , 2010, SPEEDAM 2010.

[13]  A. Binder,et al.  Analytical Calculations of Induced Eddy Currents Losses in the Magnets of Surface Mounted PM Machines With Consideration of Circumferential and Axial Segmentation Effects , 2012, IEEE Transactions on Magnetics.

[14]  Janne Nerg,et al.  High-Speed High-Output Solid-Rotor Induction-Motor Technology for Gas Compression , 2010, IEEE Transactions on Industrial Electronics.

[15]  Salman Saif Ghouri.  North American Natural Gas Demand - Outlook 2020 , 2004 .

[16]  N. Bianchi,et al.  Potentials and limits of high-speed PM motors , 2003, IEEE Transactions on Industry Applications.

[17]  Katherine E. Seiferlein,et al.  Annual Energy Review 2001 , 2002 .

[18]  J A Güemes,et al.  Torque Analysis in Permanent-Magnet Synchronous Motors: A Comparative Study , 2011, IEEE Transactions on Energy Conversion.

[19]  A. Tessarolo,et al.  Shipboard Power Generation: Design and Development of a Medium-Voltage dc Generation System , 2013, IEEE Industry Applications Magazine.

[20]  Souad Harmand,et al.  Thermal Optimization of a High-Power Salient-Pole Electrical Machine , 2013, IEEE Transactions on Industrial Electronics.

[21]  Konrad Roman Weeber,et al.  High-Speed Permanent-Magnet Motors for the Oil and Gas Industry , 2007 .

[22]  EnergyInformationAdministration.  Annual Energy Outlook 2008 With Projections to 2030 , 2008 .

[23]  Alberto Tessarolo,et al.  Stator Harmonic Currents in VSI-Fed Synchronous Motors With Multiple Three-Phase Armature Windings , 2010, IEEE Transactions on Energy Conversion.

[24]  A. Tessarolo,et al.  Multi-objective design optimization of a surface permanent-magnet slotless alternator for small power wind generation , 2011, 2011 International Conference on Clean Electrical Power (ICCEP).

[25]  Kyung-tae Kim,et al.  Comparison of dynamic responses for IPM and SPM motors by considering mechanical and magnetic coupling , 2001 .

[26]  Akira Chiba,et al.  Design and analysis of permanent magnet-type bearingless motors , 1996, IEEE Trans. Ind. Electron..

[27]  A. Tessarolo,et al.  A high-performance 640-kW 10.000-rpm Halbach-array PM slotless motor with active magnetic bearings. Part II: Manufacturing and testing , 2014, 2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion.

[28]  M. J. Samotyj,et al.  Electrification of natural gas pipeline-a great opportunity for two capital intensive industries , 1997 .

[29]  H. Rajainmaki,et al.  Vacuum Pressure Impregnation Process in Superconducting Coils: Best Practice , 2012, IEEE Transactions on Applied Superconductivity.

[30]  X Jannot,et al.  Multiphysic Modeling of a High-Speed Interior Permanent-Magnet Synchronous Machine for a Multiobjective Optimal Design , 2011, IEEE Transactions on Energy Conversion.