Low-cost motor drive-embedded fault diagnosis a simple harmonic analyzer

AKIN, Bilal
Orguner, Umut
The reference frame theory and its applications to fault diagnosis of electric machinery as a powerful tool to find the magnitude and phase quantities of fault signatures are explored in this paper. The core idea is to convert the associated fault signature to a dc quantity, followed by calculating the signal average value in the new reference frame to filter out the rest of the signal harmonics, i. e. its ac components. Broken rotor bar and rotor eccentricity faults are experimentally tested both offline using the data acquisition system, and online employing the TMS320F2812 DSP to prove the efficacy of the proposed tool. The proposed method has been theoretically and experimentally proven to detect the fault harmonics and determine the existence and the severity of machine faults. The advantages of this method include the following: (1) no need to employ external hardware or a PC running a high level program; (2) provides instantaneous fault monitoring using a DSP controller in real time; (3) embedded into the motor drive; thus, readily available drive sensors and the core processor are used without employing additional hardware; (4) no need to store machine currents data, and thus no need for large memory size; (5) very short convergence time capability; (6) immune to non-idealities like sensor dc offsets, imbalance, etc.


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Oumaamar, M. E. K.; Razik, H.; Rezzoug, A.; Khezzar, A. (2011-09-10)
The present paper focuses by means of an experimental study, on the effect of a bearing fault on the stator current signatures in induction motors. The variation in the amplitude of the characteristic components is not so significant. For that and in order to depict the presence of the fault harmonic signatures, the authors used the phase analysis of Hilbert transform applied on the spectrum modulus of the line current.
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The effects of inverter harmonics on motor current fault signatures are studied in detail in this paper. According to theory and experimentation, the fault signatures caused by the inverter harmonics are similar and comparable to those generated by the fundamental harmonic of the line current. Unlike the utility-driven motor, monitoring the current of the inverter-fed motor is considerably noisy, which can mask the fault signatures and render a wrong fault warning. Therefore, the proposed additional fault d...
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Interturn short-circuit faults in permanent magnet synchronous machines: An extended review and comprehensive analysis
Zafarani, Mohsen; Bostancı, Emine; Qi, Yuan; GÖKTAŞ, TANER; Akin, Bilal (2018-12-01)
This paper presents an extended review and recent advances in modeling and diagnosis of interturn short circuit (ITSC) faults in permanent magnet synchronous machines, supported with in-depth fault analysis. In the analysis part, the influence of the fault intensity on the machine's parameters and performance is analyzed at various operating conditions through finite-element analysis, drive system models, and test bench measurements. The presented findings shed light on the fault signatures and factors that...
High Performance Harmonic Isolation and Load Voltage Regulation of the Three-Phase Series Active Filter Utilizing the Waveform Reconstruction Method
Sentuerk, Osman S.; Hava, Ahmet Masum (2008-10-09)
This paper develops the Waveform Reconstruction Method (WRM) for high accuracy and bandwidth signal decomposition of voltage harmonic type (V-type) three-phase diode rectifier load voltage into its harmonic and fundamental components, which are utilized in the Series Active Filter (SAF) control algorithms. The SAF compensated system utilizing WRM provides high performance load harmonic voltage isolation and load voltage regulation at steady-state and during transients compared to the system utilizing the sy...
Citation Formats
B. AKIN, H. A. TOLIYAT, U. Orguner, and M. RAYNER, “Low-cost motor drive-embedded fault diagnosis a simple harmonic analyzer,” 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41450.