Analytical study of pulsating torque and harmonic components in rotor current of six-phase induction motor under healthy and faulty conditions

Maouche, Yassine; Boussaid, Abdelfettah; Boucherma, M.; Khezzar, A.

doi:10.1109/demped.2013.6645731

Cited by 10 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown lately in [17] that, the torque frequency area close to the 6th torque harmonic offers reliable diagnostic potential for the identification of the broken bar fault in conventional cage induction motors. So, it was crucial to investigate if this specific frequency area offers reliable distinguishing between healthy and broken bar fault cases in induction motors with rotor axial air ducts.…”

Section: B Experimental Results Close To 360hzmentioning

confidence: 99%

See 1 more Smart Citation

Identification of the broken bar fault in induction motors with rotor air ducts through the torque spectrum

Gyftakis

Lee

Kappatou

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

View full text Add to dashboard Cite

Large induction motors contain axial air ducts in their rotor body for cooling purposes. It has been noted lately that, the presence of the rotor air ducts affects the rotating magnetic field by introducing asymmetries. Those asymmetries produce higher harmonic content in the induction motor electromagnetic variables, same like the broken bar fault. So, the diagnostic procedure of a healthy motor with axial rotor air ducts could lead to a false broken bar fault alarm, which leads to unnecessary inspection cost, as well a significant cost because of the production process interruption for the motor inspection. In this paper, it is shown that the higher harmonic index of the electromagnetic torque can reliably be used to distinguish the healthy from the broken bar case reliably in induction motors with rotor axial air ducts.

show abstract

Section: B Experimental Results Close To 360hzmentioning

confidence: 99%

“…In the case of the broken bar fault, the location of the fault's signatures in the torque spectrum can be retrieved through [16]- [17]:…”

Section: Analytical Calculationsmentioning

confidence: 99%

Identification of the broken bar fault in induction motors with rotor air ducts through the torque spectrum

Gyftakis

Lee

Kappatou

et al. 2014

2014 International Conference on Electrical Machines (ICEM)

View full text Add to dashboard Cite

show abstract

“…On the other hand, there are numerous faults that do not solely affect some of the stator phases, but all of them to similar extent. This occurs, e.g., in case of shortage [138,466,467], excess [131,132] or sensor failure [58] of dc-link voltage v dc (for single-dc-link drive), magnet demagnetization [75], as well as mechanical (e.g., eccentricity or damaged bearings/bars) [79,81,82,84,85], speed/position-sensor [182,199], or machine cooling-system failures (increasing temperature) [60,70,71,468], among others. The phase redundancy of multiphase machines, in principle, does not seem to offer inherent tolerance against these kinds of faults.…”

Section: Main Fault Types and Literature Classification According To ...mentioning

confidence: 99%

“…Similarly to eccentricity faults, bar breakage also generates space harmonics (hence, voltage/current distortion), but with particular frequency characteristics that may be used to distinguish them [462,492,601]. The harmonics caused by broken bars also give rise to undesired torque and speed ripple [82,85].…”

Section: Mechanical Faultsmentioning

confidence: 99%

“…As indicated in Table 28, the harmonic spectrum of the current and torque signals of six-phase IMs with either symmetrical or asymmetrical WSA under one broken bar are analyzed by Maouche et al [82] so that it can be used for diagnosis. The current signature for the asymmetrical WSA is further studied in [83], where it is concluded that special care should be taken to avoid misdiagnosis because of the non-ideal converter/machine asymmetries and the effect of the closed-loop current control.…”

Section: Mechanical Faultsmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

et al. 2022

View full text Add to dashboard Cite

Multiphase drives offer enhanced fault-tolerant capabilities compared with conventional three-phase ones. Their phase redundancy makes them able to continue running in the event of faults (e.g., open/short-circuits) in certain phases. Moreover, their greater number of degrees of freedom permits improving diagnosis and performance, not only under faults affecting individual phases, but also under those affecting the machine/drive as a whole. That is the case of failures in the dc link, resolver/encoder, control unit, cooling system, etc. Accordingly, multiphase drives are becoming remarkable contenders for applications where high reliability is required, such as electric vehicles and standalone/off-shore generation. Actually, the literature on the subject has grown exponentially in recent years. Various review papers have been published, but none of them currently cover the state-of-the-art in a comprehensive and up-to-date fashion. This two-part paper presents an overview concerning fault tolerance in multiphase drives. Hundreds of citations are classified and critically discussed. Although the emphasis is put on fault tolerance, fault detection/diagnosis is also considered to some extent, because of its importance in fault-tolerant drives. The most important recent advances, emerging trends and open challenges are also identified. Part 1 provides a comprehensive survey considering numerous kinds of faults, whereas Part 2 is focused on phase/switch open-circuit failures.

show abstract

Instantaneous power spectrum analysis for broken bar fault detection in inverter-fed six-phase squirrel cage induction motor

Maouche

Oumaamar

Boucherma

et al. 2014

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

Analytical study of pulsating torque and harmonic components in rotor current of six-phase induction motor under healthy and faulty conditions

Cited by 10 publications

References 28 publications

Identification of the broken bar fault in induction motors with rotor air ducts through the torque spectrum

Identification of the broken bar fault in induction motors with rotor air ducts through the torque spectrum

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

Instantaneous power spectrum analysis for broken bar fault detection in inverter-fed six-phase squirrel cage induction motor

Contact Info

Product

Resources

About