Diagnosis of open‐switch faults in variable speed drives by stator current analysis and pattern recognition

Campos-Delgado, Daniel U.; Pecina-Sánchez, José A.; Espinoza-Trejo, Diego R.; Arce-Santana, Edgar R.

doi:10.1049/iet-epa.2013.0015

Cited by 86 publications

(31 citation statements)

References 29 publications

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“…Depending on the motor speed direction and fault location in a drive steady state, the reference voltage vector is forced in one characteristic sector during a much longer time-period than in the case of some other ones [15]. The direction of voltage vector rotation is related to the angular motor speed direction.…”

Section: Inverter Fault Monitoringmentioning

confidence: 99%

“…This technique is dedicated to motor drive systems with space voltage vector modulation. In [15] the method based on the analysis of the current vector hodograph is presented, nevertheless this approach is load depended. Due to the fact that in DRFOC the flux is stabilized, a diagnostic signal based on rotor flux processing is not normalized [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Open-Circuit IGBT Faults Diagnostic Method in DTC-SVM Induction Motor Drive

Sobański¹,

Orłowska-Kowalska²

2016

Automatika Journal

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Section: Inverter Fault Monitoringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of Open-Circuit IGBT Faults Diagnostic Method in DTC-SVM Induction Motor Drive

Sobański¹,

Orłowska-Kowalska²

2016

Automatika Journal

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“…In [18], a technique for detecting an open-circuit fault (based on Park's vector approach) is considered. Other methods for detecting transistor open-circuits and short-circuits have been presented in [19][20][21][22].…”

Section: Fig 1 Power Converter Topology In Case Of Sopfmentioning

confidence: 99%

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

et al. 2014

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In this paper first a current predictive method for single open-phase fault detection in a three phase drive with a permanent magnet synchronous machine is presented. The proposed method is based on a predictive stator current calculation. For each sampling interval the difference between the actual stator current and its predicted value in a previous sampling interval is calculated. To identify the location of a single open-phase fault, an identification method is presented which is based on the analysis of the stator current vector angle. After the single open-phase fault is detected and identified it is desirable for the electrical machine to continue operating with a reduced number of phases. For this purpose, a modified direct torque control algorithm for the fault-tolerant control is implemented. In order to improve the performance of the drive, a pre-firing angle is additionally introduced. All proposed methods have been simulated in Matlab/Simulink and verified on an experimental model. Detekcija odspojene faze i na kvarove otporno upravljanje pretvaračem napajanim sinkronim motorom s permanentnim magnetima. Učlanku je prvo predstavljena metoda za detekciju kvara odspojene faze u trofaznom elektromotornom pogonu sa sinkronim motorom s permanentim magnetima zasnovana na predikciji struja statora. U svakom koraku uzorkovanja računa se razlika izmeu trenutne mjerene struje statora i prediktirane vrijednosti iz prethodnog koraka. U svrhu odreivanja lokacije odspojene faze, predstavljena je metoda identifikacije zasnovana na analizi kuta vektora struje statora. Nakon otkrivene i utvrene odspojene faze, poželjno je nastaviti rad električnog stroja sa smanjenim brojem faza. U ovu svrhu implementiran je izmijenjeni algoritam izravnog upravljanja momentom za postizanje na kvarove otpornog upravljanja. Da bi se unaprijedilo vladanje sustava elektromotornog pogona, dodatno je uveden kut prethoenja aktivacije impulsa. Sve predložene metode simulirane su u Matlab/Simulink okruženju i provjerene na eksperimentalnom postavu.Ključne riječi: Sinkroni motor s permanentnim magnetima, na kvarove otporan sustav, kvar jedne odspojene faze, na kvarove otporno upravljanje, kut prethoenja aktivacije impulsa

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“…Even though the fault detection is simple and immediate, the exact fault localization is not simple task, especially when open faults in three multiple switches occur in various types of combination because different open-switch fault locations may develop the same fault signature. Hence, until now conventional diagnosis methods confine the fault localization problem to only the case of the open faults in two simultaneous switches [1,16,18,19,28,35] due to the complexity and precision issues in the case of open faults in more than two switches, even though this is not generally the case.…”

Section: Introductionmentioning

confidence: 99%

A Practical Approach to Localize Simultaneous Triple Open-Switches for a PWM Inverter-Fed Permanent Magnet Synchronous Machine Drive System

Song

Kim

2018

Energies

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Abstract:In order to overcome the limitations of conventional diagnosis methods, this paper proposes a reliable and practical on-line fault localization scheme for a pulse width modulation (PWM) inverter-fed permanent magnet synchronous machine (PMSM) drive system even when the inverter has simultaneous open faults in up to three switches. An open-switch fault is usually initiated by an accidental over-current, or electrical and thermal stresses. This fault may induce crucial secondary damage in the drive system since it is easily propagated and produces a continuous harmful effect on other system components. The open-switch faults in inverters often occur in a very complicated manner. Due to this reason, it was only recently that real-time diagnosis schemes under the open-switch faults in multiple switches have been presented in a few references. However, to alleviate the complexity and exactness issues, most of the conventional diagnosis schemes have considered the open faults only in two simultaneous switches until now, which is not generally the case. Even though the fault detection is simple and immediate, the exact fault localization is not a simple task, especially when there are open faults in three simultaneous switches because different open-switch fault locations may develop the same fault signature. To deal with such a problem, free-wheeling mode detection is introduced in this paper for the purpose of identifying the exact fault group and the faulty switch location. Then main objective of this paper is to realize a reliable fault localization algorithm under the condition of simultaneous open-switches (up to three) on an online basis without requiring any extra hardware or sensors in order that the algorithm can be easily installed in main CPU of a commercial drive system. For this purpose, the open faults in simultaneous switches are categorized into seven different fault groups. The entire system is implemented on a digital controller by using TMS320F28335 digital signal processor (DSP). The experimental results are presented under various open fault conditions to validate the usefulness of the proposed open-switch fault localization scheme.

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Diagnosis of open‐switch faults in variable speed drives by stator current analysis and pattern recognition

Cited by 86 publications

References 29 publications

Application of Open-Circuit IGBT Faults Diagnostic Method in DTC-SVM Induction Motor Drive

Application of Open-Circuit IGBT Faults Diagnostic Method in DTC-SVM Induction Motor Drive

Single Open-phase Fault Detection with Fault-Tolerant Control of an Inverter-fed Permanent Magnet Synchronous Machine

A Practical Approach to Localize Simultaneous Triple Open-Switches for a PWM Inverter-Fed Permanent Magnet Synchronous Machine Drive System

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