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Radial force density and vibration characteristics of modular permanent magnet brushless ac machine

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4 Author(s)
Wang, J. ; Dept. of Electron. & Electr. Eng., Univ. of Sheffield ; Xia, Z.P. ; Long, S.A. ; Howe, D.

The radial force density harmonics and vibrational characteristics of a three-phase modular permanent magnet brushless AC machine is investigated. It is shown that, owing to the presence of a large number of low- and high-order stator space harmonic magnetomotive forces, modular machines are more likely to exhibit higher low-frequency vibrations than conventional permanent magnet brushless machines. Experimental results support the analysis and its findings

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Electric Power Applications, IEE Proceedings -  (Volume:153 ,  Issue: 6 )