A modified inverter topology for fault-tolerant direct torque control induction motor drive

Gupta, Yugal; Rao, S. Srinivasa

doi:10.1080/00207217.2020.1756445

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…Where: i uf sx , i h sx and i 0 are respectively the unfaulty current, AC harmonics components, and the DC component current. Hence, it was ascertained by Wang, et al [18] that the midpoint voltage DC-link ∆u is linked with the stator current corresponding to the defected leg according as shown in:…”

Section: Restructuration Strategymentioning

confidence: 99%

Newly fault-tolerant indirect vector control for traction inverter

Zerdani¹,

Elhafyani²,

Fadil³

et al. 2021

IJPEDS

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<p>The traction inverter is a crucial power device in the electric vehicle’s powertrain, and its failure is intolerable as it would considerably compromise the system’s safety. For more reliable driving, installing a traction inverter that is sufficiently resistant to electrical failure is inherent. Due to its compact size and the small number of switches incorporated in three-phase four-switch inverter, this modular topology was used to compensate for the open switch’s failure. However, it is known to have manifold weaknesses mainly distinguished in the low-frequency region. This paper introduces a new fault-tolerant indirect control that handles the IGBT’s failure constituting the traction inverter. The fault compensator is designed first based on the Proportional Integral regulator combined with the notch filter to mitigate the current imbalance and restore the DC voltage equilibrium.Furthermore, to conceive a comprehensive fault-tolerant control, there must therefore contain an accurate fault detector. In this regard, an uncomplicated fault diagnosis method based on the current spectral analysis has been performed. The effectiveness of the submitted controller was validated by simulation using Matlab.</p>

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Section: Restructuration Strategymentioning

confidence: 99%

Newly fault-tolerant indirect vector control for traction inverter

Zerdani¹,

Elhafyani²,

Fadil³

et al. 2021

IJPEDS

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show abstract

“…This solution has been widely used in both 2-level [37,38,[40][41][42][43][44][45][46][63][64][65][66] and NPC [29][30][31][47][48][49][50][51][52][53][54][55] converters. A similar approach has been proposed for 2-level converters in [61,62], connecting the faulty phase to an auxiliary capacitor instead of the DC bus midpoint. In [67], 2 additional switches are used to bypass the inner IGBTs when faulty.…”

Section: Introductionmentioning

confidence: 99%

Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control

Caseiro

Mendes

2021

Energies

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Fault-tolerance is critical in power electronics, especially in Uninterruptible Power Supplies, given their role in protecting critical loads. Hence, it is crucial to develop fault-tolerant techniques to improve the resilience of these systems. This paper proposes a non-redundant fault-tolerant double conversion uninterruptible power supply based on 3-level converters. The proposed solution can correct open-circuit faults in all semiconductors (IGBTs and diodes) of all converters of the system (including the DC-DC converter), ensuring full-rated post-fault operation. This technique leverages the versatility of Finite-Control-Set Model Predictive Control to implement highly specific fault correction. This type of control enables a conditional exclusion of the switching states affected by each fault, allowing the converter to avoid these states when the fault compromises their output but still use them in all other conditions. Three main types of corrective actions are used: predictive controller adaptations, hardware reconfiguration, and DC bus voltage adjustment. However, highly differentiated corrective actions are taken depending on the fault type and location, maximizing post-fault performance in each case. Faults can be corrected simultaneously in all converters, as well as some combinations of multiple faults in the same converter. Experimental results are presented demonstrating the performance of the proposed solution.

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“…Once the fault is detected and located, corrective action must be taken to mitigate the effects of the fault [9][10][11]. Many inverter architectures based on some hardware redundancy have been suggested to add reconfigurability to the system [12,13]. Several studies have invested in this subject.…”

Section: Introductionmentioning

confidence: 99%

New Approach in the Fault Tolerant Control of Three-Phase Inverter Fed Induction Motor

Boumous

2020

Eng. Technol. Appl. Sci. Res.

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This article provides an improved fault-tolerant control scheme for inverter-powered induction motors. The proposed strategy addresses the cancellation of power switch failures (IGBTs) regardless of their location in a reconfigurable induction motor control. The proposed fault-tolerant topology requires only minimal hardware modifications of the conventional six-switch three-phase drive, mitigating IGBT failures through reconfiguration based on the substitution of an entire inverter arm. The detection mechanism is based on the tridimensional method from which a database will be used for the learning of the neural network. In this method, the current from the stator is used as input to the system, so access to the induction motor is not necessary.

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A modified inverter topology for fault-tolerant direct torque control induction motor drive

Cited by 7 publications

References 32 publications

Newly fault-tolerant indirect vector control for traction inverter

Newly fault-tolerant indirect vector control for traction inverter

Fault Analysis and Non-Redundant Fault Tolerance in 3-Level Double Conversion UPS Systems Using Finite-Control-Set Model Predictive Control

New Approach in the Fault Tolerant Control of Three-Phase Inverter Fed Induction Motor

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