Low-Frequency Oscillation in Rotor Vibration of a Two-Pole Induction Machine With Extra Four-Pole Stator Winding

被引：19
|
作者：
Sinervo, Anssi [1 ]
Laiho, Antti [2 ]
Arkkio, Antero [1 ]
机构：
[1] Aalto Univ, Sch Sci & Technol, Dept Elect Engn, FIN-00076 Aalto, Finland
[2] ABB Oy, ABB Motors & Generators, FIN-00381 Helsinki, Finland
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2011年 / 47卷 / 09期
基金：
芬兰科学院;
关键词：
Induction machine; mechanical vibration; rotor-dynamics; rotor eccentricity; self-bearing machine; slot harmonics; unbalanced magnetic pull; unipolar flux; UNBALANCED MAGNETIC PULL; ARBITRARY ECCENTRIC MOTION; CAGE ROTOR; TRANSIENT OPERATION; ANALYTICAL-MODEL; MOTORS; FORCES; FLUX;
D O I：
10.1109/TMAG.2011.2142007
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A two-pole induction machine with flexible rotor shaft and whirling rotor motion is considered. A 30 kW test machine is built with four-pole damper winding in stator. The construction of the machine and the test-setup are presented. The amplitude of measured vibration oscillates at twice the slip frequency. This is shown to be caused by the unipolar flux and the stator slot harmonics. The magnetic forces are shown to depend greatly on the position of the rotor with respect to the direction of the two-pole flux. The dependence is derived analytically. Finite-element model simulations are presented to provide further analysis and to assess the contribution of the extra stator winding.
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页码：2292 / 2302
页数：11
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