ROTOR RESONANCES ANALYSES OF HIGH-SPEED HIGH POWER PERMANENT-MAGNET ELECTRICAL MACHINES

  • Wedad Alsadiq Alhawil Electrical engineering department, faculty of engineering, Sabratha University.
  • Ali A. Mehna Electrical engineering department, faculty of engineering, Sabratha University.
  • Asheraf Eldieb Electrical engineering department, faculty of engineering, Sabratha University.
  • Tarak Assaleh Mechanical engineering department, faculty of engineering, Sabratha University.
Keywords: PMSM, Finite element analysis, High speed, High power, Critical speed

Abstract

High-speed electric machines (HSEMs) have been widely used in many of today’s applications.  For high-speed machines, in particular, it is very important to accurately predict natural frequencies of the rotor at the design stage to minimize the likelihood of failure. The main goal of this study is examine the design issues and performance of high-speed machines. For permanent-magnet synchronous motors (PMSM) driven by high-frequency drives, the rotor speed is normally above 30 000 rpm and it may exceed 100 000 rpm.  This study examined a 7-kw permanent magnet synchronous machine at 200,000 rpm. 3D finite element analysis (ANSYS WORKBENCH 15) was conducted to determine the natural frequencies and rotor patterns of a synchronous high-speed permanent magnetic motor, to assess the impact of leading design parameters, such as length, column diameter, span, bearings, material properties, and to compare the results of the finite element program with the results of analytical methods (i.e. critical speed).

Author Biographies

Wedad Alsadiq Alhawil, Electrical engineering department, faculty of engineering, Sabratha University.

Electrical engineering department, faculty of engineering, Sabratha University.

Ali A. Mehna, Electrical engineering department, faculty of engineering, Sabratha University.

Electrical engineering department, faculty of engineering, Sabratha University.

Asheraf Eldieb, Electrical engineering department, faculty of engineering, Sabratha University.

Electrical engineering department, faculty of engineering, Sabratha University.

Tarak Assaleh, Mechanical engineering department, faculty of engineering, Sabratha University.

Mechanical engineering department, faculty of engineering, Sabratha University.

Published
2021-04-01
How to Cite
Alhawil, W., Mehna, A., Eldieb, A., & Assaleh, T. (2021). ROTOR RESONANCES ANALYSES OF HIGH-SPEED HIGH POWER PERMANENT-MAGNET ELECTRICAL MACHINES. Scientific Journal of Applied Sciences of Sabratha University, 95-108. https://doi.org/10.47891/sabujas.v0i0.95-108