Performance of the Stator Winding Fault Diagnosis in Sensorless Induction Motor Drive

Tarchała, Grzegorz; Wolkiewicz, Marcin

doi:10.3390/en12081507

Cited by 7 publications

(5 citation statements)

References 47 publications

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“…Nevertheless, each of the proposed fault indicators increases at least twofold on average after the failure. In order to compare the impact of the load torque on the values of the described symptoms during online operation, the standard deviation for the FD EFF index values from the entire tested load torque range was calculated in accordance with Equation (12). These results, together with the ratio of the indicator value at rated load to the value without load, are grouped in Table 3, while, in Table 4, the FD EFF values depending on the number of shorted turns in the B phase of the stator winding are presented.…”

Section: Testing Of the Proposed Fault Indicators Of Itscs In On-line Operation Of The Drive Systemmentioning

confidence: 99%

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Comparison of Selected Methods for the Stator Winding Condition Monitoring of a PMSM Using the Stator Phase Currents

Pietrzak

Wolkiewicz

2021

Energies

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Stator winding faults are one of the most common faults of permanent magnet synchronous motors (PMSMs), and searching for methods to efficiently detect this type of fault and at an early stage of damage is still an ongoing, important topic. This paper deals with the selected methods for detecting stator winding faults (short-circuits) of a permanent magnet synchronous motor, which are based on the analysis of the stator phase current signal. These methods were experimentally verified and their effectiveness was carefully compared. The article presents the results of experimental studies obtained from the spectral analysis of the stator phase current, stator phase current envelope, and the discrete wavelet transform. The original fault indicators (FIs) based on the observation of the symptoms of stator winding fault were distinguished using the aforementioned methods, which clearly show which symptom is most sensitive to the incipient fault of the stator winding of PMSMs.

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Section: Testing Of the Proposed Fault Indicators Of Itscs In On-line Operation Of The Drive Systemmentioning

confidence: 99%

“…Currently, the stator phase current and voltage are the basic diagnostic signals in the diagnosis of stator winding faults. Nevertheless, the stator fault may also affect the rotational speed, temperature, back electromotive force, and magnetic flux, as well as internal signals of the control structure, of the PMSM drive system [12,13].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Selected Methods for the Stator Winding Condition Monitoring of a PMSM Using the Stator Phase Currents

Pietrzak

Wolkiewicz

2021

Energies

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“…Diverse quantities have been proposed in the technical literature for implementing condition based maintenance systems (CBMS) [1,2], such as the analysis of the stator currents [3][4][5][6][7], machine vibrations [8][9][10], fluxes [11,12], thermal images [13] or acoustic signals [14,15]. These techniques have been applied to detect different types of faults not only of the IM, such as stator inter-turn short circuits [11,16], broken bars [17,18], rotor asymmetries [19], eccentricity [20], bearing faults [6,21], but also of the inverter drive [3] or the mechanical coupling to the load, as gearboxes and pulleys [3,22].…”

Section: Introductionmentioning

confidence: 99%

Multi-Band Frequency Window for Time-Frequency Fault Diagnosis of Induction Machines

et al. 2019

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Induction machines drive many industrial processes and their unexpected failure can cause heavy production losses. The analysis of the current spectrum can identify online the characteristic fault signatures at an early stage, avoiding unexpected breakdowns. Nevertheless, frequency domain analysis requires stable working conditions, which is not the case for wind generators, motors driving varying loads, and so forth. In these cases, an analysis in the time-frequency domain-such as a spectrogram-is required for detecting faults signatures. The spectrogram is built using the short time Fourier transform, but its resolution depends critically on the time window used to generate it-short windows provide good time resolution but poor frequency resolution, just the opposite than long windows. Therefore, the window must be adapted at each time to the shape of the expected fault harmonics, by highly skilled maintenance personnel. In this paper this problem is solved with the design of a new multi-band window, which generates simultaneously many different narrow-band current spectrograms and combines them into as single, high resolution one, without the need of manual adjustments. The proposed method is validated with the diagnosis of bar breakages during the start-up of a commercial induction motor.

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“…Many studies have focused on the incipient detection of ITSCs [10,11,14] for open-loop control schemes [15][16][17][18], as well as for closed-loop vector control structures of the IM. Field-oriented control (FOC) [19][20][21][22], direct torque control with switching table (DTC-ST) [23,24], and direct torque control with space-vector modulation (DTC-SVM) [21] structures have been considered.…”

Section: Introductionmentioning

confidence: 99%

Modified Rotor Flux Estimators for Stator-Fault-Tolerant Vector Controlled Induction Motor Drives

Dybkowski

Bednarz

2019

Energies

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This paper deals with fault-tolerant control (FTC) of an induction motor (IM) drive. An inter-turn short circuit (ITSC) of the stator windings was taken into consideration, which is one of the most common internal faults of induction machines. The sensitivity of the classic, well-known voltage and current models to the stator winding faults was analyzed. It has been shown that these classical state variable estimators are sensitive to induction motor parameter changes during stator winding failure, which results in unstable operation of the direct field-oriented control (DFOC) drive. From a safety-critical applications point of view, it is vital to guarantee stable operation of the drive even during faults of the machine. Therefore, a new FTC system has been proposed, which consists of new modified rotor flux estimators, robust to stator winding faults. A detailed description of the proposed system is presented herein, as well as the results of simulation and experimental tests. Simulation analyses were performed using MATLAB/Simulink software. Experimental tests were carried out on the experimental test bench with a dSpace DS1103 card. The proposed solution could be applied as an alternative rotor flux estimation technique for the modern FTC drive.

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Performance of the Stator Winding Fault Diagnosis in Sensorless Induction Motor Drive

Cited by 7 publications

References 47 publications

Comparison of Selected Methods for the Stator Winding Condition Monitoring of a PMSM Using the Stator Phase Currents

Comparison of Selected Methods for the Stator Winding Condition Monitoring of a PMSM Using the Stator Phase Currents

Multi-Band Frequency Window for Time-Frequency Fault Diagnosis of Induction Machines

Modified Rotor Flux Estimators for Stator-Fault-Tolerant Vector Controlled Induction Motor Drives

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