The analysis of induction motor electromagnetic field and shaft revolution oscillations at dynamic rotor faults

被引：0

作者：

Jaksch, Ivan ^{[1
]}

Schreiber, Richard ^{[1
]}

Fuchs, Petr ^{[1
]}

机构：

[1] Tech Univ Liberec, Inst Mechatron & Comp Engn, Fac Mechatron Informat & Interdisciplinary Studie, Liberec, Czech Republic

来源：

2015 IEEE INTERNATIONAL WORKSHOP OF ELECTRONICS, CONTROL, MEASUREMENT, SIGNALS AND THEIR APPLICATION TO MECHATRONICS (ECMSM) | 2015年

关键词：

demodulation; fault currents; Hilbert transform; induction motors; phase modulation; shaft angle oscillation; spectral analysis; space transform;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Dynamic rotor faults of induction machines as broken bars or rotor dynamic eccentricity cause dynamic changes in the rotor electromagnetic field and therefore also in the magnetomotive force. These changes cause motor current amplitude and phase modulation. The phase modulation causes that the rotating electromagnetic field has not a stable angular frequency but oscillates around its angular frequency. The phase demodulation enables the sensorless determination of rotating electromagnetic field phase angle oscillations. The oscillation of rotating electromagnetic field transfers depending on motor load and inertia to the motor shaft revolution oscillation which may adversely affect motor operation. The paper solves this problematic by the simultaneous analysis of both oscillations at various motor working conditions.

引用

页数：6

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