Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches

Wang, Jinping; Zhang, Wei; Jiang, Weidong; Ma, Mingna; Zhang, Qingyan; Huang, Xinmei

doi:10.1109/access.2020.3034919

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…The continuity of power supply is essential for the critical applications, otherwise it leads to an immeasurable economic and life loss. A Fault Tolerant Multi Level Inverter (FT-MLI) with optimal device count is required to ensure the continuity of power supply, low initial cost and higher efficiency [8]- [10].…”

Section: A Motivation and Incitementmentioning

confidence: 99%

“…Total losses are calculated by adding the conduction, switching, and capacitor losses shown in (10). Therefore, The efficiency can be expressed using (11).…”

Section: Capacitor Loss(pca)mentioning

confidence: 99%

“…Where Pi and Po are input and output powers, respectively. 𝑃 𝐿 = 𝑃 𝐶 + 𝑃 𝑆 + 𝑃 𝐶𝐴 (10) 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 = 𝑃 𝑜 𝑃 𝑖 = 𝑃 𝑜 𝑃 𝑜 + 𝑃 𝐿 (11) The theoretical efficiency of the proposed topology is calculated by considering the input voltage, switching frequency, fundamental frequency are 230V, 5KHz, and 50Hz respectively. The SKM75GB12T4 IGBT is used for the switch positions S1, S2, S3, S4, S5, S6, S7, S8, R1, R2, and R3.…”

Section: Capacitor Loss(pca)mentioning

confidence: 99%

See 2 more Smart Citations

A Seven Level Fault Tolerant Switched Capacitor Boost Inverter With a Single DC Source

Yarlagadda,

Verma,

Tariq

et al. 2023

IEEE Access

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A Fault-Tolerant Multi-Level Inverter (FT-MLI) is essential to ensure power supply continuity for crucial applications. At the same time, the cost and efficiency of MLI is also important for its successful use in the commercial market. The existing seven level FT-MLI topologies demand more than one input DC source, which increases the cost function. This article proposes a single DC source seven level FT-MLI topology with minimum number of switches (IGBT) to reduce the cost function. The proposed FT-MLI topology generates seven level output voltage with 1.5 times voltage boosting. In case of open or short circuit fault on any single or multi switch, the topology continues to operate with five level output voltage using reserved switches. It consists of eight active switches, two diodes, two capacitors, six thermal fuses, and three reserved switches. In comparison to the existing seven level fault tolerant (open circuit and short circuit fault) topologies, the suggested structure requires minimum number of component count. The efficiency and power losses of the proposed structure are analyzed theoretically. The proposed topology has an efficiency of 96 % at an output power of 600 W under healthy condition and 97% at an output power of 272 W under post fault condition. The level shift pulse width modulation approach is used to generate required triggering pulse for the switch during pre-fault and post-fault. The proposed topology is simulated in the MATLAB/Simulink platform and experimentally verified using dSPACE 1104. The response of the output voltage and current during the transition from pre-fault to post-post fault for each switch fault are presented.

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Section: A Motivation and Incitementmentioning

confidence: 99%

“…Total losses are calculated by adding the conduction, switching, and capacitor losses shown in (10). Therefore, The efficiency can be expressed using (11).…”

Section: Capacitor Loss(pca)mentioning

confidence: 99%

Section: Capacitor Loss(pca)mentioning

confidence: 99%

See 1 more Smart Citation

A Seven Level Fault Tolerant Switched Capacitor Boost Inverter With a Single DC Source

Yarlagadda,

Verma,

Tariq

et al. 2023

IEEE Access

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show abstract

“…A traction inverter's fault diagnosis can only be completed by reconfiguring the initial topology; a contemporary structure adaptable to the fault conditions is strictly an exigency to maintain system operational continuity [7] [8]. In the literature, we distinguish two main categories of fault-tolerant topology (FTT), which are generally classified by the costs and the number of components they are composed.…”

Section: Introductionmentioning

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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Analyses, Modeling, and SVPWM Control of a Three-Level T-NPC Inverter to Reduce Common-Mode Voltage Under Open-Circuit Fault in a Neutral-Point Switch

Le,

Pham,

Nguyen

2024

IEEE Access

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Application Ranges of Fault-Tolerant Control for T-Type Three-Level Inverter Under Single/Multi-phase Open-Circuit Faults of Inner Switches

Cited by 10 publications

References 27 publications

A Seven Level Fault Tolerant Switched Capacitor Boost Inverter With a Single DC Source

A Seven Level Fault Tolerant Switched Capacitor Boost Inverter With a Single DC Source

Newly fault-tolerant indirect vector control for traction inverter

Analyses, Modeling, and SVPWM Control of a Three-Level T-NPC Inverter to Reduce Common-Mode Voltage Under Open-Circuit Fault in a Neutral-Point Switch

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