A Fault-Tolerant T-Type Multilevel Inverter Topology With Increased Overload Capability and Soft-Switching Characteristics

He, Jiangbiao; Katebi, Ramin; Weise, Nathan; Demerdash, Nabeel A. O.; Wei, Lixiang

doi:10.1109/tia.2017.2665630

Cited by 56 publications

(25 citation statements)

References 17 publications

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“…The three duty ratios for the three-phase inverter with the switching frequency optimal (SFO)-PWM-PD scheme [13] are given in (5) and (6)…”

Section: Current Sharing In Sfo-pwm-pd Schemementioning

confidence: 99%

“…Furthermore, there are many redundant devices kept constant on during normal operation, which obviously causes additional device losses and decreases the converter efficiency. Another fault-tolerant three-phase four-leg T-Type converter topology was recently reported in [5]. This topology can tolerate any open-circuit and certain short-circuit power semiconductor faults.…”

Section: Section I Introductionmentioning

confidence: 99%

“…This topology can tolerate any open-circuit and certain short-circuit power semiconductor faults. However, as clarified in [5], this converter cannot tolerate a short-circuit fault that could occur in the outer switches of the converter. Similar investigations were also carried out on fault-tolerant I-Type NPC converters [6]- [7] [8].…”

Section: Section I Introductionmentioning

confidence: 99%

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Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter

Katebi

Weise

2019

IEEE J. Emerg. Sel. Topics Power Electron.

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A novel fault-tolerant three-level power converter topology, named advanced three-level active T-Type (A3L-ATT) converter, is introduced to increase the reliability of multilevel power converters used in safety-critical applications. This new fault-tolerant multilevel power converter is derived from the conventional T-Type converter topology. The topology has significantly improved the fault-tolerant capability under any open circuit or certain short-circuit faults in the semiconductor devices. In addition, under healthy condition, the redundant

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“…The three duty ratios for the three-phase inverter with the switching frequency optimal (SFO)-PWM-PD scheme [13] are given in (5) and (6)…”

Section: Current Sharing In Sfo-pwm-pd Schemementioning

confidence: 99%

Section: Section I Introductionmentioning

confidence: 99%

Section: Section I Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter

Katebi

Weise

2019

IEEE J. Emerg. Sel. Topics Power Electron.

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“…As far as the price of SiC devices is concerned, if all six switching devices in the ANPC topology are replaced with SiC devices, the high cost will limit the widespread application of such products. Considering this problem, many studies have proposed hybrid applications of SiC and silicon (Si) devices, that is, only some of the devices in a system or topology are replaced with SiC devices [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In [5], a Si CSI (current source inverter)/SiC VSI (voltage source inverter) series inverter system was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with traditional Si devices, the low switching loss characteristics of SiC devices can greatly reduce the total circuit losses. In [6], a fault-tolerant T-T structure multilevel three-phase inverter is proposed, in which the devices of redundant bridge arms were replaced by SiC MOSFETs. Its working principle is to realize ZVS (zero voltage switching) and ZCS (zero current switching) of the main circuits through the advance switch of the redundant bridge arm.…”

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Three-Level ANPC Inverter Based on Hybrid SiC and Si Devices

et al. 2020

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Silicon carbide (SiC) devices have excellent performance, such as higher switching frequency and lower switching loss compared with traditional silicon (Si) devices. The application of SiC devices in inverters can achieve higher efficiency and power density. In recent years, the production process of SiC devices has become more mature, but the cost is still several times that of traditional Si devices. In order to balance cost and efficiency, replacing only some of the Si devices with SiC devices in a topology is a better choice. This paper proposed a high-efficiency hybrid active neutral point clamped (ANPC) three-level inverter which has only two SiC devices and the other devices are Si devices. A specific modulation strategy was applied to concentrate switching losses on the SiC devices and reduce the on-state loss through parallel operation during freewheeling intervals. Theoretical efficiency curves and experimental verification of the proposed hybrid scheme with Si-only and SiC-only schemes were carried out.

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T-Type Multilevel Converter Topologies: A Comprehensive Review

Salem

Abido

2018

Arab J Sci Eng

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A Fault-Tolerant T-Type Multilevel Inverter Topology With Increased Overload Capability and Soft-Switching Characteristics

Cited by 56 publications

References 17 publications

Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter

Investigation of Fault-Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter

A High-Efficiency Three-Level ANPC Inverter Based on Hybrid SiC and Si Devices

T-Type Multilevel Converter Topologies: A Comprehensive Review

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