Detection of Induction Motor Faults in Inverter Drives Using Inverter Input Current Analysis

被引:68
作者
Georgakopoulos, Ilias P. [1 ]
Mitronikas, Epaminondas D. [1 ]
Safacas, Athanasios N. [1 ]
机构
[1] Univ Patras, Dept Elect & Comp Engn, Patras 26500, Greece
关键词
Fault diagnosis; induction motors; inverter; spectral analysis; wavelet; AIRGAP ECCENTRICITY; PERFORMANCE ANALYSIS; INSTANTANEOUS POWER; SPECTRAL-ANALYSIS; BROKEN BARS; ROTOR BARS; DIAGNOSIS; MACHINES; SIGNAL;
D O I
10.1109/TIE.2010.2093476
中图分类号
TP [自动化技术、计算机技术];
学科分类号
080201 [机械制造及其自动化];
摘要
Broken rotor bar/end-ring and eccentricity are common faults in squirrel-cage induction motors and have been thoroughly investigated in the case of ac grid supply. In this paper, these types of faults are studied in the case of inverter-driven motors. More specifically, a novel investigation in inverter input current spectrum is made in order to reliably detect the fault-indicative frequency components. These harmonics give the ability for fault detection and classification, even under low load and low motor severity fault condition in steady-state or transient operation. The proposed diagnostic method has been particularly designed for open-loop controlled variable frequency induction motor drives, which is a usual case in low-cost industrial drives where precise speed control of the motor is not required. Moreover, an alternative technique is also presented in case the stator current is measured.
引用
收藏
页码:4365 / 4373
页数:9
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