A Single-Phase Five-Level Inverter Topology With Switch Fault-Tolerance Capabilities

Gautam, Shivam Prakash; Kumar, Lalit; Gupta, Shubhrata; Agrawal, Nitesh

doi:10.1109/tie.2016.2626368

Cited by 93 publications

(143 citation statements)

References 27 publications

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“…Another five-level fault-tolerant structure is proposed in Gautam et al (2017). This topology is presented in Figure 7.…”

Section: Topologies Of Five-level Front-end Convertersmentioning

confidence: 99%

“…The topology (Sajadian and Santos, 2014) requires the use of a transformer, which can be a disadvantage, but it only requires a single source and no capacitors for obtaining the five voltage levels. Topologies (Sajadian and Santos, 2014;He and Cheng, 2016;Vahedi et al, 2016;Gautam et al, 2017;Saeedian et al, 2018) require a single dc link, i.e., a split dc link is not necessary for the operation with five levels; therefore, for applications as renewables, this is an interesting aspect. Since fault tolerance and reliability issues are not the main focus of this review, only a few examples of the more recent topologies (Madhukar Rao and Sivakumar, 2015;Gautam et al, 2017;Hu et al, 2018) were considered.…”

Section: Comparison Between Topologiesmentioning

confidence: 99%

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Review of Five-Level Front-End Converters for Renewable-Energy Applications

et al. 2020

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“…Another five-level fault-tolerant structure is proposed in Gautam et al (2017). This topology is presented in Figure 7.…”

Section: Topologies Of Five-level Front-end Convertersmentioning

confidence: 99%

Section: Comparison Between Topologiesmentioning

confidence: 99%

Review of Five-Level Front-End Converters for Renewable-Energy Applications

et al. 2020

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“…In regards to this, the main inverter topology presented in the reference paper [18] is analysed under the healthy and faulty conditions. Under the healthy conditions, the available inherent redundant paths are studied to observe the impact on the efficiency of the inverter.…”

Section: Introductionmentioning

confidence: 99%

Fault tolerant architecture of an efficient five‐level multilevel inverter with overload capability characteristics

Sadanala

Pattnaik

Singh

2020

IET Power Electronics

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Multilevel inverters (MLIs) are gaining the widespread attention in various industrial applications. However, the advantages offered by MLIs are only met with the employment of a high number of semiconductor switches and capacitors, which are most vulnerable amongst all the power electronic components. Thus, designing of a reliable MLI topology is a need of the present hour. In this regard, a five-level fault tolerant MLI topology has been proposed here. The proposed MLI topology comprises the main inverter topology and a redundant leg. The main inverter topology comprises bidirectional switches which result in high power losses under both healthy and faulty conditions. Eighteen different cases arising from the inherent redundancy available in the main inverter topology have been analysed to achieve the optimum solution for obtaining high efficiency. A novel redundant leg architecture has been designed, which achieves significantly improved efficiency under all faulty conditions. Under overload conditions, the proposed redundant leg architecture is capable of reducing the current stress on the main inverter switches. An effective qualitative and quantitative comparison of the proposed topology with the recent literature has been presented. The feasibility of the proposed concepts has been verified by the obtained simulation and hardware results.

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“…CHB has been applied in the Power Electronic Traction Transformer (PETT) for the 15 kV single-phase voltage traction system in Europe. Compared with CHB, a three-level neutral point clamped cascaded converter (3LNPC-CC) has larger capacity, lower voltage stress and better harmonics with the same number of modules [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In the 3LNPC-CC system, the same Alternating current (AC)-link current flows through each converter module. Therefore, the DC-link voltage of each module will determine the active and reactive power distribution [5][6][7][8]. The control and modulation strategy has been an interesting issue to solve problems of the unbalanced voltage.…”

Section: Introductionmentioning

confidence: 99%

Voltage-Balancing Strategy for Three-Level Neutral Point Clamped Cascade Converter under Sequence Pulse Modulation

Yu¹,

Xu²,

Zhou³

et al. 2019

Energies

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In response to the unbalanced DC-port fault of three-level neutral point clamped cascaded converter (3LNPC-CC), a sequence pulse modulation (SPM) voltage-balancing strategy is proposed in this paper to balance DC-link voltage, not only within the module but also among modules. With the steps of carrier cascaded calculation and sequence pulse generator, the voltage level of cascaded modules would take a smooth transition. Then the limitation of the SPM strategy is calculated according to the law of volt-second balance and the law of energy conservation. The proposed strategy has the advantage of simple calculation and control stability. Simulation and experimental results show the superiority of the proposed strategy.

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A Single-Phase Five-Level Inverter Topology With Switch Fault-Tolerance Capabilities

Cited by 93 publications

References 27 publications

Review of Five-Level Front-End Converters for Renewable-Energy Applications

Review of Five-Level Front-End Converters for Renewable-Energy Applications

Fault tolerant architecture of an efficient five‐level multilevel inverter with overload capability characteristics

Voltage-Balancing Strategy for Three-Level Neutral Point Clamped Cascade Converter under Sequence Pulse Modulation

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