A reliable rotor eccentricity detection scheme for induction machines in the presence of a position dependent load torque oscillation

被引：0

作者：

Wu, Long ^{[1
]}

Habetler, Thomas G. ^{[2
]}

Harley, Ronald G. ^{[2
]}

机构：

[1] John Deere Phoenix Int, 1750 NDSU Res Pk Dr, Fargo, ND 58102 USA

[2] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

2007 IEEE INTERNATIONAL SYMPOSIUM ON DIAGNOSTICS FOR ELECTRIC MACHINES, POWER ELECTRONICS & DRIVES | 2007年

关键词：

induction machines; online condition monitoring; rotor eccentricity; position dependent load torque oscillation; negative sequence harmonic information; stator current space vector spectrum;

D O I：

暂无

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：

Single phase stator current spectrum is usually monitored to examine rotor eccentricities in mains-fed induction motors. However, a rotor-position-dependent load torque oscillation introduces exactly the same side-band harmonics in the stator currents with larger magnitudes, leading to an ambiguity in the online rotor eccentricity diagnostics in the presence of a load torque oscillation. This paper develops a reliable scheme to eliminate load oscillation effects from rotor eccentricity detection by monitoring eccentricity-only related normalized negative sequence harmonic information in the stator current space vector spectrum. A significant advantage of this method lies in its independence on motor parameters. Extensive experimental results demonstrate the efficacy and convenience of the proposed technique.

引用

页码：299 / +

页数：2