Electromagnetic Design and Loss Calculations of a 1.12-MW High-Speed Permanent-Magnet Motor for Compressor Applications

• Published in: IEEE transactions on energy conversion Vol. 31; no. 1; pp. 132 - 140
• Main Authors: Fengge Zhang, Guanghui Du, Tianyu Wang, Fengxiang Wang, Wenping Cao, Kirtley, James L.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air gaps; Core loss; Design analysis; Eddy currents; Electromagnetic design; finite element method; High speed; loss calculation; Mathematical analysis; Motors; Permanent magnet motors; Permanent magnets; Poles; Rotors; Stator windings; Torque; finite element method; loss calculation; high speed; Electromagnetic design; permanent-magnet motors
• ISSN: 0885-8969; 1558-0059
• DOI: 10.1109/TEC.2015.2488841

Electromagnetic design of a 1.12-MW, 18 000-r/min high-speed permanent-magnet motor (HSPMM) is carried out based on the analysis of pole number, stator slot number, rotor outer diameter, air-gap length, permanent magnet material, thickness, and pole arc. The no-load and full-load performance of the HSPMM is investigated in this paper by using 2-D finite element method (FEM). In addition, the power losses in the HSPMM including core loss, winding loss, rotor eddy current loss, and air friction loss are predicted. Based on the analysis, a prototype motor is manufactured and experimentally tested to verify the machine design.