Enhanced and Fast Detection of Open-Switch Faults in Inverters for Electric Drives

Eickhoff, Heinrich T.; Seebacher, Roland; Muetze, Annette; Strangas, Elias G.

doi:10.1109/tia.2017.2718973

Cited by 28 publications

(6 citation statements)

References 20 publications

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“…The black vertical line marked 'Fault alarm in this phase' represents the moment when the phase evaluation performance J(r) first crosses the threshold J th . According to the fault decision logic, that is, formula (18), which phase of the evaluation performance J(r) exceeds the threshold first, then the fault alarm is given. As can be seen from Figure 8a, the c-phase residual evaluation performance J(Δi c ) first exceeds the threshold value.…”

Section: -Norm Based Residual Evaluation Simulation Resultsmentioning

confidence: 99%

“…Currently, relevant research has been conducted on the diagnosis of inverter open circuit faults both domestically and internationally. Fault diagnosis methods can be divided into analytical model-based [14][15][16], signal processing-based [17][18][19], and knowledge-based fault diagnosis methods [20][21][22]. Reference [14] proposed an inverter open circuit fault diagnosis method based on interval observer.…”

Section: Introductionmentioning

confidence: 99%

“…It cannot diagnose the fault of two switch tubes in the different phase. Reference [18] proposed an inverter open circuit fault detection algorithm based on current control bias observation. In response to noise disturbances and rapid load changes, the confidence level is increased by utilizing additional expected voltage.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Inverter open circuit fault diagnosis based on residual performance evaluation

Sun,

Chen,

Wang

et al. 2023

IET Power Electronics

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Because of uncertain random noise and unknown disturbance, the observer‐based inverter fault diagnosis meets the problems of large deviation of current observation value and high false alarm rate. An inverter open‐circuit fault diagnosis method is proposed via residual performance evaluation. Firstly, the interval sliding mode observer is constructed by combining the interval observer with the sliding mode observer. Three phase current estimates are obtained and current residuals are calculated. Secondly, the residual performance indicators are calculated using the evaluation function. The fault detection is derived by comparing residual performance with the threshold. Thirdly, a residual information table is established based on the fault information contained in the residual for fault isolation. Finally, the proposed algorithm is validated on simulation and physical platforms. Compared with traditional observer‐based diagnostic methods, the introduction of residual performance evaluation improves the diagnostic speed by more than 50%. The interval sliding mode observer has higher estimation accuracy and anti‐interference ability in the presence of noise and external disturbances.

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Section: -Norm Based Residual Evaluation Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inverter open circuit fault diagnosis based on residual performance evaluation

Sun,

Chen,

Wang

et al. 2023

IET Power Electronics

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“…OCFs diagnosis methods including current-based methods and voltage-based methods have been paid much attentions [10]- [26] . In [16]- [18], current-based fault diagnosis methods are developed to identify fault characteristics during a switching period, where corresponding diagnosis thresholds are set to perform fault diagnosis.…”

Section: Fig1 System Configuration Of Actpssmentioning

confidence: 99%

Fault Diagnosis and System Reconfiguration Strategy of Single-phase Three Level Neutral-Point-Clamped Cascaded Inverter

Han

Ren

et al. 2019

IEEE Trans. on Ind. Applicat.

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This paper presents a fault diagnosis method and system reconfiguration strategy of three level neutral-pointclamped cascaded inverter (3L-NPC-CI) to enhance reliability of power supply in electrified railway. First, neural network is employed to perform open-circuit fault diagnosis and identify fault switches. Then, system reconfiguration strategy is proposed to perform single phase 3L-NPC-CI reconfiguration. Through the analysis of the operation status of 3L-NPC, there are eight fault modes in single bridge arm, including single-switch fault and double-switches fault. By the feature analysis for the output arm voltage harmonic of normal and eight fault modes, seven harmonic parameters are selected as fault feature vectors. Meanwhile, a three-layer neural network is constructed, and the seven feature vectors are the input layer of the neural network. By training algorithm, the fault switches location can be identified accurately about one modulation period. Then, the fault module is bypassed and the 3L-NPC-CI system is stable by reconfiguring the modulation strategy of other normal modular. Simulation and experimental results are given to validate the proposed fault diagnosis and system reconfiguration strategy. The proposed method is able to improve robustness and reliability of 3L-NPC-CI in traction power supply system.

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“…In particular in off-shore wind turbine systems, it is desirable to continue their operation even in presence of open-switch faults in the machine-side converter. However, the faulty converter causes increased losses and oscillations in the torque which harm the mechanical components and the generator of the wind turbine [9]. To analyze the impact of open-switch faults, a model of the faulty converter has been proposed in [10], [11], [12].…”

mentioning

confidence: 99%

Modeling and Control of Permanent-Magnet Synchronous Generators Under Open-Switch Converter Faults

Hackl

Pecha

Schechner

2019

IEEE Trans. Power Electron.

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The mathematical modeling of open-switch faults in two-level machine-side converters and the fault-tolerant current control of isotropic permanent-magnet synchronous generators are discussed. The proposed converter model is generic for any open-switch fault and independent of the operation mode of the electrical machine. The proposed fault-tolerant current control system gives improved control performance and reduced torque ripple under open-switch faults by (i) modifying the anti-windup strategy, (ii) adapting the space-vector modulation scheme and (iii) by injecting additional reference currents. The theoretical derivations of model and control are validated by comparative simulation and measurement results.

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Enhanced and Fast Detection of Open-Switch Faults in Inverters for Electric Drives

Cited by 28 publications

References 20 publications

Inverter open circuit fault diagnosis based on residual performance evaluation

Inverter open circuit fault diagnosis based on residual performance evaluation

Fault Diagnosis and System Reconfiguration Strategy of Single-phase Three Level Neutral-Point-Clamped Cascaded Inverter

Modeling and Control of Permanent-Magnet Synchronous Generators Under Open-Switch Converter Faults

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