A Diagnostic Method of Simultaneous Open-Switch Faults in Inverter-Fed Linear Induction Motor Drive for Reliability Enhancement

Choi, Jin-Ah; Kim, Sang-Hoon; Yoo, Dong Sang; Kim, Kyeong-Hwa

doi:10.1109/tie.2014.2385044

Cited by 72 publications

(33 citation statements)

References 36 publications

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“…In these figures, the values of one through seven are designated to denote the fault group FG 1 through FG 7 , and F sw1 , F sw2 , and F sw3 are employed to denote three faulty switches, respectively. After small transient period, the proposed fault localization scheme determines FG = 1, F sw1 = 1, F sw2 = 0, and F sw3 = 0, which indicates that the fault belongs to FG 1 and the open-switch fault location is S 1 .…”

Section: Resultsmentioning

confidence: 99%

“…In these fault groups, the group FG 1 denotes the open fault in single switch. The fault groups FG 2 through FG 4 represent the open fault in two simultaneous switches and these groups are further divided according to the location of the two faulty switches.…”

Section: Open-switch Faults In a Pwm Invertermentioning

confidence: 99%

“…Furthermore, in some drive applications such as vehicle and railway transportation, a high degree of reliability and safety must be continuously achieved, even in accident or fault situations, which makes the fault diagnosis of AC machine drive systems as one of the primary concerns [1]. Since a fault in such applications Also, the fault detection based on the average absolute values of normalized currents has been presented to implement the detection irrespective of operating conditions [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…Since a fault in such applications Also, the fault detection based on the average absolute values of normalized currents has been presented to implement the detection irrespective of operating conditions [19,20]. Other studies have considered the simultaneous open faults in inverter multiple switches and detected fault occurrence by using the current harmonics [1,21], moving window-based current signals [22], and non-zero phase current information [23].…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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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Section: Resultsmentioning

confidence: 99%

Section: Open-switch Faults In a Pwm Invertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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show abstract

Reliability challenge for impedance network‐based DC‐DC boost converters

Haji-Esmaeili

Babaei

2017

Circuit Theory & Apps

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Summary In this paper, reliability evaluation is proposed for some of the most famous impedance network‐based DC‐DC boost converters. Markov reliability approach is used to evaluate the reliability of the converters. Also, some other factors such as components' failure rates, reliability functions, and mean time to failures are introduced and evaluated. Detailed explanations for the evaluation methods of the mentioned factors are also provided in the context of the paper. In addition to the mathematical analysis, numerical calculations are also done through the simulation results of the converters. Simulations are done in PSCAD/EMTDC. Finally, a numerical and graphical reliability comparison is provided for the mentioned converters. The purpose of this paper is to give a comprehensive reliability evaluation and comparison for some of the most popular impedance network‐based DC‐DC converters. In addition, this paper gives a detailed reliability analysis that can be used in reliability assessment of all types of power electronic converters, so it can help the researchers to consider reliability calculations into their designing.

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Current Vector Phase‐Based Diagnostic Method for Multiple Open‐Circuit Faults in Voltage‐Source Inverters

Chen

Pan

2021

IEEJ Transactions Elec Engng

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A simple and fast diagnostic method for multiple open‐circuit faults in voltage‐source inverters based on the current vector phase is proposed. The characteristics of the current vector phase in both healthy and faulty conditions are analyzed in detail, and simple fault symptom variables are defined to extract the features for fault isolation. The proposed method can diagnose 21 types of open‐circuit faults only by using current vector phase information, and it is fast, robust and easy to implement in existing systems without additional sensors. Several experimental results verify that the diagnostic algorithm has no false alarms under speed and load transient conditions, and the fault can be isolated within 15% of the current fundamental cycle in the case of the fastest diagnostic process and no more than 80% of the current cycle in the worst cases. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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A Diagnostic Method of Simultaneous Open-Switch Faults in Inverter-Fed Linear Induction Motor Drive for Reliability Enhancement

Cited by 72 publications

References 36 publications

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

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

Reliability challenge for impedance network‐based DC‐DC boost converters

Current Vector Phase‐Based Diagnostic Method for Multiple Open‐Circuit Faults in Voltage‐Source Inverters

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