Title :
Vibration Characteristics of Modular Permanent Magnet Brushless AC Machines
Author :
Wang, Jiabin ; Xia, Zhen P. ; Howe, David ; Long, Stephen A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ.
Abstract :
The radial force density harmonics and vibration characteristics of three-phase modular permanent magnet brushless AC machines, in which the coils that belong to each phase are concentrated and wound on adjacent or alternative teeth, are analysed. It is shown that, due to the presence of a large number of low and high order space harmonic magnetomotive forces, it is more likely that low frequency modes of vibration are excited in modular machines. Consequently, modular machines are more susceptible to low frequency resonant vibrations. Experimental results validate the analysis and its findings
Keywords :
air gaps; brushless machines; harmonic analysis; permanent magnet machines; vibrations; coils; frequency modes; high order space harmonic magnetomotive forces; modular machines; permanent magnet brushless AC machines; radial force density harmonics; resonant vibrations; three-phase machines; AC machines; Air gaps; Brushless machines; Coils; Machine windings; Magnetic analysis; Permanent magnets; Stator windings; Torque; Wounds; noise and vibrations; permanent magnet machines;
Conference_Titel :
Industry Applications Conference, 2006. 41st IAS Annual Meeting. Conference Record of the 2006 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
1-4244-0364-2
Electronic_ISBN :
0197-2618
DOI :
10.1109/IAS.2006.256728
